Zhang Xiaoyu traveled to the Tang Dynasty and settled down, salt was as valuable as gold, and the tavern was about to close. He took out distilled liquor with his backhand and sold a cup for ten coins! The dignitaries in Chang'an were fighting for their heads, and even Cheng Yaojin blocked the door and wanted to buy a share: "Boy, I, Old Cheng, have bought this wine recipe!" Zhang Xiaoyu sneered: "If you don't sell it, I will open my own wine shop and let the whole Tang Dynasty drink my wine!" In the heyday of Zhenguan, he was the only profiteer who dared to steal money from the imperial court!
