I Built a Golden Age for the Hegemon of Western Chu

After working overtime until late at night, the protagonist Yan Shi takes the elevator home, only for it to plunge downward. He transmigrates to another parallel timeline in history, where Xiang Yu defeated Liu Bang and established the Western Chu Dynasty. Yan Shi transmigrates into the body of the original owner, whose name is Shi Chuan. Shi Chuan was a good-for-nothing playboy who loved drinking and gambling. He drowned while fleeing debt collectors, and Yan Shi happened to transmigrate into his body, taking his place. Drawing on the knowledge he acquired in his original world, Shi Chuan gradually makes a name for himself in Western Chu and becomes a wealthy merchant. Xiang Yu discovers him and puts him to good use, and in the end, Shi Chuan helps Xiang Yu build an age of prosperity.