After Time Travel, the System Reincarnates and I Become a Human Being

Cui Shijiu, a late-night scroll king in the modern workplace, suddenly died at work and time-traveled into the daughter of an ancient concubine. The original owner actually became her system. The Voice from the World even said that the original owner, as a system, must help Cui Shijiu complete the Eighty-one Difficulties, otherwise he will be destroyed. Cui Shijiu must also help the original owner fulfill his last wish, otherwise he will never be reincarnated... There is no way, what can I do, open the book!