I Can Have Infinite Enlightenment

With courage and determination, the mortal Xiao Yun, aided by the Enlightenment System, participates in the battle for the title of Emperor among powerful beings with divine bodies. But why does the Emperor from millions of years ago know him?! Why did he leave behind notes from the future?! What is the true origin of the Enlightenment System?! All parallel worlds face a great crisis, and the only savior is the Earth boy summoned by the gods!