A Legend That Started with Repeating a Grade

Two thousand years ago, the Immortal Palace came to the world and led the human race to defeat the demon race on an isolated island overseas. The Immortal Palace teaches people "immortal arts", people learn martial arts, raise magical beasts in captivity, and rule the world. The human race has reached unprecedented prosperity and dominates the world. Two thousand years later, Ren Xiao, a young man who traveled five years here, finally got access to his system and received a huge sum of money that would allow him to spend his entire life extravagantly. His legend began from then on.