Time Travel Cultivation: Either Immortal or Demon

Lin Yu, a research madman in the 22nd century, was once killed by a clone, but became a newborn kitten in the world of cultivation. She had an awesome father and mother, but both parents disappeared, and she became a useless monster; There is a mentally retarded senior brother. It turns out that this senior brother is the reincarnation of the demon emperor who died 30,000 years ago. There is a confidante who is the emperor of heaven, and there is an emperor's envoy who is a demon; There is a nephew of the arrogant loli demon clan young master, and a nephew who takes the form of a ginseng emperor. The two nephews will always be on the road of falling in love and killing each other, and will hopefully never come back; Uncle Lin Yu, who started out as a loser, got mixed up among the monsters and began a long journey of cultivation by fighting monsters and upgrading.