One System Per Year, and You Call That Cultivating Immortality?

Li Changsheng time-traveled. And it was even worn. He was born with a divine body, was accepted as the chief disciple by a celestial sect, and also possessed the standard features of a transmigrator: a cheat code. He was supposed to be immortal and invincible, but this cheat code is a bit of a trap. It's one thing to break the record once a year. The first cheat ability is that you become stronger while sleeping. This made him a laughingstock of the Primordial Immortal Sect, and from then on he had another title: the God of Sleep. Fortunately, the cheat code was refreshed again in the second year....