Digging Graves Along the Way to Become an Immortal

What exactly is it to cultivate immortality? At the end of the cultivation, Ye Han found that he no longer knew whether he was alive or dead, real or fake... The world was sick, the grandfather called his grandson as his ancestor, the crops planted in the fields grew flesh and blood, and the livestock lived high in the temple and worshiped... Not only this world, but also he seemed to be sick, he couldn't tell the difference. He found that he couldn't distinguish anything. He danced with evil spirits and walked with weirdness. In the end, he was the biggest evil spirit... *This is a fantasy novel that combines elements of folklore, fantasy, and weirdness. I want to combine the majestic and majestic with the treacherous waves and clouds. I don't know if I can write it well. I hope you can give me more advice.