The Character Introduction of "Luan Ke"

The roles included the male lead, Ning Zhi, the female lead, Zhao Ni, the male supporting role, Leng Ying, the male supporting role, Xin Yi, the male supporting role, Shangguan Li, and the female supporting role, Chun Xi. [Ni Luan] Author: White Dew Rebirth. This is an ancient romance/classical fictional novel. It has been completed and can be enjoyed without worry. User recommendation: The simple-minded female secretary of the Department of Systems, Shangguan Ni, drowned in an accident. She thought that her life was over. She did not expect that when she opened her eyes again, she would become the eldest daughter of the Duke of Beiding's Mansion, Zhao Ni, who had raised a male escort and gave birth to an illegitimate daughter. Shangguan Ni thought to herself,"I really don't know what surprises Miss Zhao has for me tomorrow." After her rebirth, she realized that she did not drown by accident in her previous life, but was plotted against by the Fifth Prince, Ning Yi. Shangguan Ni decided to reveal Ning Yi's true colors and pull him down from the battle for the throne. * "The world is big, but little girl Ni is the most important!" "With mother here, you can do whatever you want." Sister Fu Demon Brother: "This rouge is not bad. Keep it for my sister." "This painting is not bad. Keep it for my sister." "How do you spend your lucky money? Of course, it's to buy new clothes for my sister." "Zhao Ni, why are you so old-fashioned?" Sister Fu looked at her with disdain and concentration. * On the way, he met the like-minded Ninth Prince Ning Zhi. At first, Ning Zhi thought that Zhao Ni liked him, but later he realized that he was wrong, so he began to pursue his wife… "Do you want that position?" asked Zhao Ni. Ning Zhi was scared. If he said he didn't want it, would Lady Zhao never see him again? "I want it," the pitiful Ning Zhi quickly said. Ni Zhao said,"If you want the throne, I'll help you." * She had already tacitly accepted the surprise that Lady Zhao had given her, but unexpectedly discovered that the Chastity Sand was still there? What? So even though Lady Zhao had a male escort and gave birth to a daughter whose father was unknown, she was still a good lady? What the hell, the chastity sand was still there, giving birth to a hammer… I hope you will like this book.

The characters inside included the male lead, Yang Shu, the third son of the Boling Marquis's estate, who was in charge of the Imperial City's intelligence agency. From a young man who indulged in debauchery to a man who ruled the world, growing up had to pay the price of blood and tears. The female protagonist, Ming Wei, was a disciple of Tiansuanzi and the new Fate Master. She had transmigrated to seventy years ago and became the Seventh Miss of the Ming Dynasty. He was not bothered by trifles, had a bunch of crooked reasons, and was good at talking nonsense in a serious manner. The male supporting role was Ji Wei, nicknamed Ji Xiaowu. He was Mingwei's cousin and was engaged to her. His dream was to be an immortal, and he yearned for Jianghu. He didn't like reading, and he was often mixed up by his father and brother. The male supporting role was Ning Xiu, Yang Shu's senior brother. He was ordered by his master to come to the capital to protect him. A handsome and elegant guqin player, a good senior brother who kept his promise, but he could not complete his task, could not complete it…The male supporting role was Tang Shao, the second son of the Tang family, the number one aristocratic family in South Chu. Male supporting role-Jiang Wenfeng, a famous official who was passed down in history and an expert in solving cases. He just wanted to be a good person and fish for fame, but he was tricked into getting on the boat. He couldn't get off, couldn't get off…The male supporting role was Xuan Fei, the Abbey Dean of Xuandu Temple, and the accomplice of the Spirit Emperor in the original history. Ming Wei realized that he could still be saved. The Preceptor was very tired, almost losing his self-confidence after being saved…The male supporting character was Su Tu, the Seventh Prince of the Snow Wolf Tribe. In his previous life, he was the leader of the Western Wei Dynasty and had unified the eight tribes of the Northern Hu Tribe. Male supporting role-Ji Ling, Mingwei's eldest cousin, first-class scholar, proficient in the six arts of a gentleman, good at networking. Love to think, love to worry, love to care for your family. The supporting male character was Fu Jin, Jiang Wenfeng's teacher, Prince Sihuai's junior brother, and a great scholar of the age. He was famous and arrogant. He could give up his life, but he would never lose his demeanor. Male supporting role-Ah Xuan, an all-purpose guard, responsible for being fed dog food every day. The female supporting character, Ah Wan, was Yang Shu's servant girl. She was skilled in martial arts, proficient in medicine, and had a strong personality. She always wanted to suppress Ming Wei, but she was bullied every time…The female supporting role was Pei Rong, the imperial concubine who was the most favored in the six palaces. She was Yang Shu's aunt in name, but she cared for her more than her aunt and nephew. He had a peaceful personality, did not fight for anything, and hid a big secret in his heart. The supporting actress, Duo Fu, was the servant of the Seventh Miss of the Ming Dynasty. She had a pure Yang fate and was extremely strong. She felt inferior because of the birthmark on her face. There was absolutely nothing wrong with looking for Duofu if there were any difficulties. The female supporting role was Ji Yu, the mother of the Ming Seventh Miss, the Third Mistress. She was beautiful, fate was playing tricks on her, and she had given up everything for her daughter. " Cheng Luan " Author: Yun Ji. It's an ancient romance novel. You can enjoy it without worry. [User recommendation: Yun Da's new book, with the theme of divination and mystic arts. Strongly recommended.] I hope you will like this book.

The characters included the supporting role, Little Tanuki. Little Tanuki thought that she was a long-legged cat with a graceful figure…Shh, it was better not to expose her. Female Lead-Jiang Chen. The author of "Yu Luan" was Wang Zhuo. It was a fantasy romance/oriental fantasy novel. [User recommendation: Jiang Chen wants to live again.] However, the current Queen of Heaven was her enemy. The Demon Subduing Division's leader was also her enemy. Even the gods and buddhas in the sky were her enemies… I hope you will like this book.

The characters included the supporting roles of Xiaoqian, Liyang's adopted daughter, the male lead of Qi Luan, the third son of the Qi family, the female lead of Yang Muling, the princess of Changting, the male supporting role of Chu Feng, the romantic character, and the female supporting role of Lady Yun, the eldest daughter of Minister Zhang. The author of Qi Luan was the Flower of the Other Shore. It was an ancient romance novel. User recommendation: Jianghu is a long time. It's a blessing to keep a person's hair white and have children and grandchildren around him. However, in Jianghu, people had no choice. When the martial world and the royal family were mixed together, what would the outcome be? Since ancient times, the royal family and the martial world had been clearly separated. Why was there a series of turmoil this time? Qi Luan, Qi Luan, what exactly did he want? Chu Feng, Lady Yun, do you still have the red dress that holds your hand and grows old with you? Could it be that in the end, he could only sigh helplessly? In Jianghu, people attach great importance to friendship and righteousness. There are many talented people who are different from ordinary people. There are countless people who die for their confidants. There was love in the pugilistic world. Heroes were always unable to resist the beauty. There was also a firm and unyielding promise that could make one's life soft.. I hope you will like this book.

There were novels similar to Luan Ke: 1:"Is it okay to be reborn later?" Author: 38 Prawns 2."My Age of Drama." Author: Sima Baishan 3."The Hardship Daily Life of a Buddhist Salted Fish". Author: Fate Must Not Be 4: Sweet Concubine 99, Author: The Cat Who Forgot to Breath 5."Carrier-borne Special Soldiers", Author: Mao Sanbai 6:"Starting with a Sitcom," Author: A Little Fatter 7: Muscle Movie King, Author: Ya Wan Ju Shi 8:"This Game Is Too Cruel", Author: Summer Rice Fragrance 9:"A Warm Marriage in a Sweet Series", Author: Wu Qianyu 10:"1983 Small Island, Starting from Large Farmers", Author: July Budu The Joy of the Dragon Rider, Author: Bai Yuhan Little White's Love in the Other World, Author: Wood Ends Wu Sheng 13:1990: From Baojia Street, Author: Meat Governor My Brother Is Super Strong, Author: Jie You After Giving My Body to the Supervisor, I Got a Baby. Author: Xiaolou Girl 1 Intertwined Relationship, Author: Ran Yiyi The following is a detailed introduction of these novels: 1."Rebirth is Late, Will You Be Okay":"Rebirth is Late, Will You Be Okay" is a humorous novel with a unique angle that makes people laugh. The author used a relaxed and cheerful tone to deal with the story and the emotions of the characters just right, making people laugh. The plot was compact and the characters were vivid, making people feel as if they were in it. The author's writing ability was also outstanding, allowing the readers to follow the rhythm of the story and immerse themselves in it. Overall, this book was a pleasant reading experience and worth reading. Although some readers gave up because of the slow update speed, this did not affect the overall reading experience. I gave this book a score of 3.6 and thought that it was a good piece of work and worthy of recommendation. The story was about a young man who had transmigrated into an old man's body and was trying his best to catch up in the era of the recuperation of reiki. It was full of anticipation and imagination. The protagonist of the story was reborn as an old man in his sixties. By leading the way of square dancing, he triggered the trend of the recuperation of reiki, which made people's eyes light up. The author cleverly used the plot of the Earth's recuperation of reiki from the memories of his previous life, which filled people with anticipation. The plot was compact and the characters were vivid, making people feel as if they were in it and unable to extricate themselves. In general,"Rebirth Is It Okay Later" was a delightful novel and was worth recommending. 2."My Age of Drama": Good book, seedling, worth recommending. The main character was in his second year of university, and he was in the collaboration class of the Chinese opera and the Humanities Arts. He was able to participate in the drama of the Humanities Arts. As for the improvement of acting skills and the refinement of the characters, the growth of the characters could be seen in just tens of thousands of words. The protagonist did not have the overly greasy and experienced foresight of a reborn person. He did not have the feeling of a teenager who did not care about anything when he encountered something. The impulsiveness, enthusiasm, and fearlessness of a young person were very good. Maintaining this feeling was the most precious thing for an actor. Don't let it end badly! 3."The Hardship Daily Life of Buddhist Salted Fish":"The Hardship Daily Life of Buddhist Salted Fish" was a novel with a Zen monk as its theme. The author had a deep understanding of Buddhism and the style of writing was comfortable. The main character was a monk who abided by the rules and regulations. Not only did he not eat meat or fish, he did not eat anything after noon. He also wore a hundred layers of clothing. At the same time, he also had his own persistence and cultivation. The book introduced a system, but this system had a profound origin and was not a brainless novel. In addition, there was no CP in this book. The transmigration plot and character descriptions were excellent. It was a true Buddhist, not a fool. The whole story flowed smoothly, and the author's writing style was also very good. It introduced Buddhist ideas, and after reading it, it made people feel that "this is the holy monk." The protagonist's image was very well portrayed, with flesh and blood. The character's completion was very high, and it was basically complete after the first 30 chapters. There were connections between the worlds he had transmigrated to. There must be foreshadowing and anticipation. The mystery of the mastermind behind the scenes was also done well. Overall, it felt very successful. Even though the title looked a little lame, overall, it was a delightful and enlightening book. 4.<<Sweet Concubine 99>> He was Beichen Yue, the cold-blooded and decisive ninth prince of Beichen Kingdom. As he was framed, his grandfather told the Emperor in his dream that as long as the youngest daughter of the richest merchant in Jiangnan, Mu Jiujiu, married into the family, the Ninth Prince would wake up immediately. However, when he woke up, he was extremely disgusted with this marriage."Do you know how to embroider? Do you know how to play the piano? Do you know how to play chess? Ha, you don't know anything and you want to marry into my Yue King's mansion? Chase her to the side courtyard!“​ A month later. "Wifey, look, this is the mandarin duck I embroidered for you…" "Do you want your husband to play the song 'Phoenix Seeking Phoenix'?" "Wifey, if your husband takes another step, you will lose. Do you want to go back?“ Mu Jiujiu was speechless. Help, my husband is slapping my face online every day, what should I do?​ 5."Carrier-borne Special Forces": A story of a fat man with impure motives who joined the army and made a big splash (causing endless trouble)! It was so funny that my stomach was about to show abs! 0.9 in logical relationships, 0.8 in plot progression, 0.7 in character emotional processing, 0.7 in story world structure, 1 in writing ability, 4.2 out of 5, still working on updates. 6."Starting with a Sitcom": Give me some dry grass first. There are too few words. I'm just making do with it at the moment… 7."Muscle Movie King":"Muscle Movie King" was a novel with the theme of the urban entertainment industry. The main character was a third-rate undergraduate who majored in acting. He obtained a system that could continuously train his ability to control the muscles in his entire body, thus achieving the effect of improving his acting skills. The story described how the protagonist worked hard in the entertainment industry, gradually growing from a small role to an outstanding actor. This book was about the entertainment industry and actors. The author skillfully combined the actors 'acting skills with their muscle control to create a refreshing story. There were mixed reviews from the readers. Some thought that the rhythm was a little slow, the content was a little weak, and the direction of the performance was too singular. However, most readers gave the book a positive review. They thought that the protagonist was very hardworking in acting, but he was very indifferent to fame and fortune. He also enjoyed all kinds of melons in the entertainment industry. Although some readers felt that the pace and content of the book were somewhat lacking, they were still attracted by the fact that the book was solid and solid. "Muscle Movie King" was very different from many of the movie king novels nowadays. It was not only limited to the improvement of the main character's acting skills, but it also vividly portrayed all kinds of events and characters in the entertainment industry. Not only did the protagonist achieve a huge breakthrough in acting, but he also became a high-profile figure in the entertainment industry through continuous learning and improvement. The story of this book was so fascinating that it made people cry. All in all,"Muscle Movie King" was an entertainment novel that people couldn't stop reading. It showed all kinds of things in the entertainment industry in a unique way. The protagonist's growth and struggle were moving, and his persistence and hard work also inspired the readers. Although this book had some shortcomings, it was still a recommended entertainment novel. 8:"This Game Is Too Cruel": The Crazy Poor Overlord Disguises the Otherworld as a Game, Tricking Even More Crazy Players Into Doing Crazy Things [The Fourth Calamity] ## The holographic game "The Continent of Molka" was officially launched on Earth. Once it was launched, it became popular all over the world. At the start of the game, the strongest empire relied on its guts! Poor Overlord 677: Starving to death, finding players to explore; If they didn't have any tools, they would find players to forge steel. If they wanted to attack and defend, they would have to find players to get weapons… The players could solve most of her problems for her. When there were no problems, the players were the biggest problem! ## [Player: Everything is for my lord!] [Player: Fight for the great 677 Empire!] [Player: Roll the mud into balls and pretend to be an Immortality Pill for the Lord to eat ~] ## [Female Lead: Lu Qiqi (Original Earthling)] [Construction Style]+[The Big Girl is mainly fighting for the world]+[Plot Style, no fixed couple]+[Female Lead, Black Eggface] ========= Author's recommendation: "Making Koi Fish in a Survival Game" "After I transmigrated, I was forced to become a fake system." 9:"Sweet Warm Marriage": recommended 10:"1983 Small Island, Starting from Large Farmers": Personal recommendation, 5 stars Families by the sea and neighbors. It was mainly about breeding, coupled with the daily life of the era of catching the sea and fishing by the sea. Those who liked this type of novel would definitely not be able to stop. Single Female Lead "The Joy of the Dragon Rider":"The Joy of the Dragon Rider" is a fascinating book with a rich and interesting storyline. The protagonist, Baron Aldington, gradually rose from a small manor owner to a Dragon Knight, showing an extraordinary life course. The author's strokes were exquisite and the plot was unique, making the readers feel as if they were in the world of the book. This book was not only a novel, but also a story about power, wisdom, and wealth. It made people think deeply. The author's new book,"The Joy of the Dragon Rider," was exciting. Hopefully, it would not end badly. In addition, Lao Bai's new book continued the setting of the Great Dragon's death. The Holy Roman Empire-type nobility system made people look forward to this book. Overall, Joy of a Dragon Rider was a delightful and fascinating book that was worth reading. [Xiaobai's Love in the Other World: Do you know what the Book of Feathers is?] From what Bai Lingshan knew, the Book of Featherfall was an ancient scroll that stored all kinds of abilities. And the various abilities inside had a strange name, called the charm number. Bai Lingshan was originally a freshman at Xiangyu High School, but by chance, she became a contestant of the Book of Feathers Descent. Without anyone's guidance, she had to fend for herself and embark on the adventure of collecting talismans for the Book of Feathers. However, as time passed, she gradually discovered the hidden mission outside. Every time she took a wrong step, the ending would twist a little. But no matter what, she would follow her heart. ------ ---- No matter what I become in the future, I will always be me, not you. Bai Lingshan At that time, the youth who was like the white moonlight, although he felt unattainable, was still right in front of him. Now, he was getting further and further away from her, replaced by the person who looked like an enemy but was not an enemy. Thy path should be according to thy heart, and not recommended by others. On a red night Under the night sky, the red fog dispersed and the moon reflected in her eyes again. Did you know? Xiaobai, there is a kind of flower in my hometown. Its name is Obsidian Flower Plant, and its flower language is the guardian of love. Han Chenfeng 13:"1990: From Bao Jia Street":"1990: From Bao Jia Street" was a new entertainment novel that everyone was looking forward to. The author had demonstrated excellent writing skills in his previous book,"The Era of Trending Literature", which left a deep impression on everyone. This book continued the style of the previous work. The main character's background music and the author's talent were commendable. The author's writing was smooth, making people feel as if they were in the story. The background music and the author's creative process made people feel very real, as if they were also creating. At the same time, the story was also interwoven with actors 'performances, allowing the readers to have a deeper understanding of the entire entertainment world. The author's creative thinking was very unique. From music to novels to actors and directors, every step had deep thought and exploration. This book was definitely a masterpiece worthy of recommendation. Whether it was a reader who was interested in entertainment or a creator who pursued creation, they would be inspired and benefited from it. "My Brother Is Super Strong":"My Brother Is Super Strong" is a book that makes people feel warm and touched. The story was about how an older brother protected his younger sister and became a great hero. Through vivid descriptions and fascinating plots, the author showed a brother's deep love and protection for his sister. This story not only made people feel the warmth of family, but also made people think about how to become a real hero. The invincible image of the protagonist in the book was even more exciting and encouraging. Overall, this book was a delightful and touching work, worth reading. Chapter 15:"After Giving My Body to the Supervisor, I Have a Baby": A Court Official Under One Person VS A Soft Beauty Who Hids All Her Secrets Feng Xiao 'er had married the most treacherous official of the current dynasty. She had been scheming step by step, but he had seen through her every step. She was originally a top-notch assassin in the martial arts world. For the sake of information, she served tea and water to the superintendent, massaging his shoulders and legs. She was pitiful and humble. After gaining the eunuch's trust, she began to put her arms around the eunuch's shoulders and wanted to be good sisters with him. One night, Xiao Qi pressed her against the corner of the wall and said evilly. "Woman, submit to our family. We will give you the power to be above everyone else." "Don't mess around." She hammered his chest with her small hand. He was even more disdainful. How could a eunuch take advantage of him? In the end, she wanted to cry but no tears came out of her eyes. 16."Intertwined Relationship": Intertwined relationship, conflicting wishes. It was love that made them, but it was also love that destroyed them. Bai Xiaoshi, an imperfect female lead, found herself little by little in her search for redemption. Lin Qing, a male lead who strived for perfection, stuck to his beliefs and tried his best to protect his family in case after case.

Luan Haiyan was one of the characters in "Fight Through the Heavens" and was Xiao Yan's father. According to the novel, Luan Haiyan was the main character in a fantasy novel written by Tian Can Tudou,"Battle Through the Heavens". He was an elder of the Xiao clan and Xiao Yan's biological father. He was born in a wealthy family, but for some reason, he had a conflict with his family and finally chose to leave the family to go to the Heavenly Silkworm Cave to find the cultivation method. During the training process, Luan Haiyan gradually obtained a powerful strength and established a deep relationship with Xiao Yan. He taught Xiao Yan to practice the Xiao clan's Qi Method and played an important role in Xiao Yan's growth. He could be said to be one of Xiao Yan's first teachers. At the end of the novel, Luan Haiyan and Xiao Yan fought against the enemies of the Xiao clan and eventually became Xiao Yan's biological father.

The characters included the male lead, Yin Xiaoche, a modest gentleman. I was originally low-key and loved freedom, but your heart was in politics, so I had to follow my husband. The female protagonist, Gu Yunjin, was smooth and cunning on the surface. I was still the straight woman of steel from before. There was no change at all. [Gui Luan Brocade] Author: Que Shang Shuang. It is an ancient romance/classical fictional novel. It has been completed and can be enjoyed without worry. User recommendation: He asked,"Do you choose me or power?" She replied,"Power." He said,"That's good. I am power." Abandoned wife met abandoned son, weak to strong. In her previous life, Gu Yunjin was a tragic white lotus. She was infatuated with the wrong person, treated the enemy as a friend, and recognized the thief as her mother. Kindness and naivety made her the wife of a minister who had abandoned her power. Not only did she bury herself, but she also implicated her loved ones. How could she regret it? Who would have thought that the heavens would pity her and allow her to be reborn? When the abandoned wife of a powerful minister in the past met the abandoned son of the royal family today, did you think it was a pitiful mutual licking? If you underestimate your enemy, please pray for your own good! I hope you will like this book.

The characters in the movie included the main character Ling Huang, the main character Xue Beijie, the main character Xue Qingcheng, the supporting character Xu Shenrong, the supporting character Deng Chuyu, the supporting character Shangguan Yiyi, the supporting character Ling Yong, the main character Mo Lingfeng, the female character Ling Feng, the supporting character Nan Chu, the supporting character Mo Haotian, the supporting character Ling Junze, the supporting character Murong Lin, the supporting character Gao Xian, the supporting character Seventh Prince, the supporting character Mo Xiaoqi, the supporting character Cheng Feng, and the supporting character Su Aoxue. "Hong Luan Betrothal" was written by Meng Jinxu. It was a fantasy romance/oriental fantasy novel. It had been completed and could be enjoyed without worry. User recommendation: Make a marriage, can it be complete? I hope you will like this book.

The characters in the movie included the male lead, Situ Heng, the female lead, Shen Qingluan, the male supporting characters, Chu Xian and Brother Xian, and the female supporting characters, Yuan Yimei and the eldest daughter. "Prosperous Ming Luan" Author: One Thousand Gold. It's an ancient romance/classical fictional novel. You can enjoy it without worry. User recommendation: Prisoner. Chen Qingluan, who had been imprisoned for more than 30 years, was reborn the moment South Qin was destroyed. [Big Gold has a new article! This article is a reincarnated novel of a fictional dynasty, a drama, and an unconventional routine. I welcome everyone to come and comment ~] I hope you will like this book.

The characters included the protagonist, Ji Yu, whose character was Yun Xian. With sword-like eyebrows and starry eyes, handsome and elegant On the surface, she was lazy and romantic, but in fact, she was calm and composed. The female lead was a shocked salamander. She was beautiful and born beautiful. Her skin is as smooth as cream, better than pink White with a hint of red, plump and moist, female protagonist-Purple Woman, charming, beautiful and unparalleled. Angel Face, Devil Body Flirtatious eyes, charming and cold Wisdom and beauty coexist, the female protagonist-Lady Mingzhu, the glamorous queen, the most beautiful woman Hot and seductive, charming, female protagonist-Yan Lingji, tender as water, passionate as fire Charming and pure, enchanting and agile. Female Lead-Lady Yan, graceful and noble, dignified and elegant. He has the heart of the main wife and the life of the main wife. The male supporting role, Han Fei, is frivolous and indifferent on the surface. In fact, he was extremely intelligent and ambitious. The male supporting role was Wei Zhuang, who was arrogant and cold, domineering and evil. The male supporting role was Zhang Liang, who was gentle and handsome. The female supporting role was Nongyu, gentle and quiet, small and exquisite. Fresh and elegant, gorgeous and graceful Kindness and courage, tender autumn water, female supporting role-Mrs. Hu, gentle and sad, elegant and quiet Beautiful young woman, gentle and considerate, female supporting role-Beauty Hu, charming and seductive, fox eyes seductive Submissive and full of tricks, female supporting role-Red Lotus, innocent and romantic, kind and simple, female supporting role-Snow Maiden, Alluring Dancer Her hair was as white as snow. The female supporting character was Clear Music. She was a cold and icy fairy. She was beautiful and charming. The fairy descended to the mortal world, classical and elegant. The female supporting role-Duanmu Rong, an ice beauty who was cold on the outside but warm on the inside. Rong 'er realized that someone was trying to snatch my senior brother away! "Qin Shi Luan Jiu Ge" Author: Half-price Longan. It's a light novel/derivative Doujinshi novel with calm, funny, intelligent, intellectual, relaxed, strategic, and comedic elements. [User recommendation: Ji Yu, who came to the anime world of Qin Dynasty, accidentally became the successor of one of the Hundred Schools of Philosophy. He followed the waves in the torrent of history, or he was excited.] I hope you will like this book.