Transmigrated as a Spoiled Heir

He woke one day to find he had transmigrated to Great Qian. He was now a live-in son-in-law, with a wife and daughter to boot? One moment he was enjoying wine and women in a brothel; the next, he was being thrown out of the house. Penniless and with nothing to his name, he rolled up his sleeves and set out to build a business. He made perfume, sold salt, and opened brothels. Before long, the nobles and royals could no longer sit still. What? I’ve nearly bought the whole world, and now you’re telling me my father-in-law is the emperor himself?