I Transmigrated to the Western Han Dynasty and Set Up a Street Stall

The male lead runs a street stall in the modern era. After getting drunk one night, he falls into his cellar on the way home. When he wakes the next morning, he discovers that he has transmigrated to Chang'an during the Western Han dynasty. Using Han clothing from the Western Han period and modern goods as currency, he builds his own brand in the modern world and makes connections with powerful figures. He marries the reigning princess and, thanks to his innate knowledge of history, changes the course of the Western Han dynasty time and again. He becomes a business magnate and takes over the nation's markets.