I Can Have Infinite Epiphany

With determination and courage, Xiao Yun, a mortal boy, joins the battle for the qualification of the emperor with the help of the epiphany system. But why did the emperor know him a million years ago? Why did he leave notes in the future? What is the true origin of the epiphany system? All parallel worlds will face a huge crisis, and the only savior is the boy from Earth summoned by the gods!