This book is about a group of people living in the Northeast in the 1980s. They are tall and short, smart and stupid. They mixed in society, grabbed territory, opened casinos, and played with women. In the end, most of them ended their lives with a bullet. I'm not giving them a biography. They don't deserve it! I want to write about an era. That era was like a heavy fog, covering the entire Northeast. Smoke still rose from the chimneys of state-run factories, but the smoke was getting lighter. Workers are still going to work, but wages are becoming increasingly difficult to pay. Some people started to set up stalls on the streets, some started to buy and sell, and some started to mingle with society. Xiao Ke walked out of that heavy fog. He is not tall, about 1.6 Meters tall. A clever brain is used in a wrong way. He opened a casino and set up gambling draws, and he drew more than 90,000 yuan at most in one time. He wears a suit and tie, drives a Mercedes-Benz, has a secretary, and is obviously a serious businessman. He was so cruel that he broke the noses of countless people. He is also very loyal and his younger brothers are willing to sacrifice their lives for him. He is smart, but his intelligence is used in the wrong place, which is more terrible than stupidity. In terms of writing method of this book, I drew lessons from Kong Ergou's "Twenty Years of Underworld". Gags, comments, and a "gangster matrix analysis" from time to time. The story is adapted from real materials of Xiao Ke, Qiao Si, Li Zhengguang, Xiao Fei, Yang Mantou and others that can be found on the Internet. The fictional part is to make the story better. The real part is shocking enough. One final word: Harbin's public security is different now than it was in the 1980s. It's not that the law has progressed, it's that people's hearts have changed.