What is the main theme of 'night falls in the city novel'?

Tang Zhen transmigrated to an apocalyptic world, where humans struggled to survive in various buildings that they built because the ground was covered in lethal dangers that were invisible to the naked eye. Tang Zhen transmigrated along with his mutated cell phone that was packed with miraculous applications. There were all kinds of cities – some could fly in the sky, some could submerge into the ocean while some could become invisible – and shocking secrets were hidden within them. The power of Tang Zhen’s city was… He established a city and quickly leveled up his army with speeding tools. Then, he dominated this alternate world by seizing other cities. He sat at the very top. Beneath his feet was a vast floating city guarded by dragons and surrounded by angels. Countless cannons were also set up at various corners of the city. A million miles ahead, in the depths of the ocean, there was another city as large as a continent awaiting his conquest.

Qiao Nian lived in the Qiao family’s house for 18 years before her biological parents found her. Suddenly, all the wealthy families in the city knew that the Qiao family had a fake daughter! A true daughter of an affluent family would be talented, gentle, and kind. A fake daughter would not be able to pick up any skills and accomplish nothing. Everyone wanted to see how miserable she would become when she went back to her ravine after being kicked out of a rich family! Qiao Nian also thought that her biological parents were poor teachers from Luohe County. Who knew that her brother drove a Phaeton that was worth three hundred thousand yuan! Her biological father was also a professor who taught at Tsinghua University! The big boss of the family of scums became a bootlicker and bowed in front of her grandpa… Qiao Nian was dumbfounded. Erm… this wasn’t the same as saying yes! After being freed from the family of scums, Qiao Nian was able to be herself. She was the top student in the college entrance examination, a live broadcast star and the heir of an invaluable cultural heritage… Her identities were revealed and when she started to appear on the hot searches in the city, the family of scums turned green. The anti-fans mocked: What’s the point of trying to fake an image? Aren’t you just sticking to my brother everyday? Qiao Nian responded: I’m sorry but I already have a match. Top Brother: @Qiao Nian. Let me introduce her to everyone. This is my sister. Wealthy Grandpa: My dear granddaughter, why are you working so hard? If you want a bicycle, grandpa will buy it for you! The rich and powerful in Beijing spread a rumor that Master Wang was hiding a wife in his luxurious house. No matter how much people tried to persuade him, he never took her out to meet anyone. If he were asked, he would say the same sentence. “My wife is from the countryside and she is shy.” That was until one day when someone saw the noble and cold Master Wang holding a girl’s slender waist while hiding in a corner of a wall and muttering with red eyes. “Baby, when will you give me a title?” [Fake daughter who is from a truly wealthy family] + [Two big bosses]

An ordinary man, Ye Chen traveled to the cultivation world by accident and became a phenomenal immortal of that era. After 3,000 years in the cultivation world, he was betrayed and traveled back to earth through a spatial tear. Five years had passed in the mortal world, but when he came back with his abilities, he found out he now has a daughter!

Chloe was the second daughter of the Bishop family, she was the girl who had it all breathtaking looks, a foster father who loved her as much as his own biological daughter, and a fiance who was handsome and rich. But nothing was perfect in this world. It turned out she also had a foster mother and sister who could ruin everything she had. The night before the engagement party, her foster mother drugged her and plotted to send her to hooligans. Fortunately, Chloe went to the wrong room and spent a night with a stranger. It turned out that man was the CEO of America's top multinational group, who was only 29 but on the Forbes List. After having a one-night stand with her, he proposed, "Marry me, I will help you to take revenge."

Three years ago, he got into serious trouble for a woman's sake and ended up serving a three-year sentence. Three years later, he returned triumphant, only to find that the woman had sided with their enemies, and his closest friend had been ruined. In life, simplicity reigns: with the sky above, the earth below, brothers in the heart, and the beloved in the embrace, one needs nothing more. Yet, life is not always simple: facing obstacles from gods and buddhas alike, he vows to conquer all challenges across three thousand worlds. Nothing can stand in his way!

Il y a trois ans, il faisait rage en Afrique, incontestablement le Roi des Rois Soldats. Trois ans plus tard, il est revenu en ville, sans voiture, sans maison, et constamment dans les ennuis. Postulant pour être un agent de sécurité dans une entreprise, passant du champ de bataille au bureau, il est discret, astucieux, avec de la profondeur. Même les agents de sécurité peuvent connaître leur moment de gloire au printemps. Chaque fois que quelqu'un lui demandait : pourquoi es-tu toujours celui qui a pas de chance ? Basil Jaak répondait timidement, c'est juste parce que je suis trop visiblement beau ! ...