Siheyuan: at the Beginning, Everyone Will Be Sent to Kowloon Walled City to Fight Against Illegal Workers.

[Yi Zhonghai, the godfather of the underworld, Liu Haizhong, the firearms master, and Yan Bugui, a professional extortionist, were the three giants of the courtyard in the 1960s who crossed Hong Kong to dominate the underworld. [Name He Yuzhu, codenamed Pig Killer by the Ministry of Public Security, remotely controlled Yi Zhonghai, sweeping across the underworld, using evil to control evil. The leader was assassinated, the eldest brother was raped, and undercover policeman He Yuzhu became the gang boss inexplicably. After his death, he came to the courtyard house in the 1960s and was reborn as He Yuzhu with the same name. In this courtyard, he found that everyone was not a good person and was even darker than northern Myanmar in his previous life. So he decisively reported everyone in the hospital, and then took everyone to Kowloon Walled City to work illegally and work as piglets for him to earn the first pot of gold. When He Yuzhu investigated the last case he came into contact with in his previous life, he discovered that it turned out to be a huge international criminal organization. He definitely couldn't do it alone, so he took the initiative to lead the entire hospital to go dark and set up the No. 1 Underworld steel rolling gang in Hong Kong to assist him in continuing to investigate the case.