From a Young Apprentice to a King with a Different Surname

Zhou Hang, the second-generation rich man, was caught and beaten to death and accidentally time-traveled to a young apprentice in the Dajing Dynasty. Fortunately, there is a system: you can learn a top skill every three years; So he started a gorgeous life of opening a shop to make money, working as an official to build roads, opening up new territories, and becoming a marquis. Some years later Zhou Hang: Your Majesty, I want to retire. Emperor: You can't retire until you are thirty years old.