After Cultivating to Immortal Emperor, I Returned to Earth

In his last life, he accidentally traveled to the world of cultivation and cultivated to the realm of the Immortal Emperor in just 800 years. Because he made too many enemies, he was besieged by the eight immortal sects. At the critical moment, his confidante sacrificed his life to activate an artifact with the ability to travel through time and space. When he woke up, he found that he had returned to the earth when he was a boy. With the memory of cultivation in his previous life, let's see how the protagonist sweeps through the wilderness in this life...