After transmigrating to the Tang Dynasty, Xiao Zizai has no money and not even a household registration. He has only one thought: survive first, and worry about everything else later. He sells soap to wealthy merchants, monopolizes the refined salt market, sails overseas to smelt steel, and trains an army. Li Shimin thinks he is a pawn. Xiao Zizai thinks Li Shimin is his rival. This game of chess is his to play.
