In one of the novels, the protagonist's big brother was called Liang Xiaofei. He was a zombie and met the protagonist in another world.

I can't confirm the title of the novel you're looking for because you didn't provide enough information. Please provide more context such as the genre of the novel, the author, or other relevant information so that I can provide you with a more accurate answer.

In a novel where the protagonist's brother turned into a zombie and he became a supernatural being, the following plot would usually appear: The protagonist's brother was originally an ordinary human but was turned into a zombie in a mysterious incident. The protagonist found that he had the ability to control fire, lightning, ice and other elements, so he decided to find his brother and fight against those who controlled zombies together. In the process of finding his brother, the protagonist met some other ability users who could control various elements and form a team to fight against zombies and controllers. In this novel, the protagonist's team may encounter various challenges, including the mutation of zombies, the conspiracy of the controller, and the competition between other superpowered people. They may find their brothers through constant battles and adventures and defeat those who control zombies to protect human dignity and freedom.

It was a fantasy magic novel written by Ning Nuannuan and Bo Shiyan. You can read the complete version of this novel on the internet. The novel told the story of the protagonist, Ning Nuannuan, who was framed by her own sister six years ago and lost everything. Six years later, she returned with Meng Bao and fought against the people who had bullied her. However, the search results did not mention the specific work " The Big Boss's Child Called Me Mommy Again ", so it was impossible to determine whether there were limited resources for this work.

The protagonist's name was forgotten, but he followed a big brother called Brother Huan and killed the son of another big brother in order to protect Brother Huan's daughter. He began to run for his life, hoping to escape from the pursuit of Brother Huan and his men. In this process, he experienced many difficulties and challenges, but he persevered and finally found a way out and successfully escaped from the pursuit of Huan Ge and his men.

I recommend the book "The Royal Highness 'Court Clothes". The protagonist experienced many mysteries during the Qianlong period of the Qing Dynasty. Although the main character was a zombie, he lived in a city as an ordinary person and fought against the Western blood-sucking zombies, creating the Eastern zombie myth. Or, he could recommend "Undying Zombie Soul". The main character, Linz, was an undying zombie soul. The book was full of mystery and gloominess. There were many plots related to zombies, which met the requirements of the title. I hope you like this fairy's recommendation. Muah ~😗

"I recommend General, Be Kind." This is an ancient romance novel. As soon as the female protagonist transmigrated, she met the little male protagonist at the human trafficker's place and said,"Let's be together forever," as if she was coaxing a child. The male protagonist chased the female protagonist, lied about his age, and became the female protagonist's "big brother." He made the female protagonist step by step into the male protagonist's house. The female protagonist thought that she was escaping from the marriage, but it turned into a gift. The escape along the way turned into sweet dates. This was the story of a black-bellied male protagonist wooing his wife. In order to get the female protagonist, he meticulously weaved a 360-degree net with no blind spots for her, just to firmly trap her and fulfill his promise of "Let's be together forever." I hope you like this fairy's recommendation. Muah ~😗

Yes,"The Female CEO's Arrogant Bodyguard" was a novel about urban life written by the author, Dream Into the Wilderness. The male protagonist was called Liu Xiaofei. He was once the most powerful mercenary in the world. In order to treat his mother's serious illness, he had no choice but to enter the Xiao Corporation. He was specially hired by the beautiful president, Xiao Mengjie, as his personal male secretary. He suffered many difficulties and finally exploded. I hope you like this fairy's recommendation. Muah ~😗

" The Big Boss Is Cold and Unparalleled " was a novel written by Li Zhu. It told the story of the cold-faced big boss Yan Yongwang and the cold beauty Chao Juan. These two characters met because of a certain plot, but they did not know that they were the same person. The novel described how they helped each other, saved each other, and finally fell in love with each other. The novel was completed, and the latest update was chapter 89, published on January 18, 2021.

I don't know of any novel whose main character is named Xiao Liang.