There's Only One Tycoon in Shanghai

Chen Xiao, a modern special forces king, finds his soul transported to the Republic of China era and becomes a disciple of a Green Gang leader from the “Tong” generation. His exceptional skills and courage earn him the favor of Huang Jinrong, and from then on he rises like a dragon unleashed into the sea. With the help of a System, he climbs to power through the gangland turmoil of blood and fire, ultimately becoming the uncrowned king who commands Shanghai and turns the world upside down.