Immortal Grass

Why are there grasses living alone on this barren and vibrant land? What is the reason for surviving so strongly? Decrypt an ancient legend? The return of a god? Born in a strange world, how should he choose? Now that his cultivation level has been determined, how should he choose the route he should take? To whom should he tell the pain of losing his sister? In order to save his sister, he is willing to risk his own life, give up his cultivation, and sell his soul. When he has nothing, when all the spearheads are pointed at him, as a world-recognized devil with a fixed cultivation, how should he face it? I wonder who can resonate with the path of cultivating immortality! !