I Became a Mortal Fairy in the Wasteland

Killing the Immortal Emperor, destroying the Demon Lord, and slaying hundreds of thousands of gods and demons from outside the realm, only to be killed by the law of heaven in the end. Su Yan's remnant soul traveled back to the real world. Returning to the old land, I found that it was already a changed land, a wasteland. A war destroyed the world. Even so, then I will become a mortal immortal in the wasteland and become the savior again! If there is a gap in the way of heaven, I will fill it! While you were still fighting over one or two techniques, Su Yan was already wholesale of immortal techniques. Those who follow me will prosper! Just... "Hey, how come I've done all the work of Heaven?" "It turns out that I am the innate ox-horse holy body!"