In the real world, for some reason, there was a heavy rainstorm, which caused the underworld, ghosts to flow out, cracks in other worlds to open, alien creatures, and space cracks to appear in the three realms of immortals and demons, leading to the invasion of alien civilizations. In an inconspicuous small world of three thousand in the three realms, a little man of modern civilization appeared. When he started climbing, he encountered heavy rain and was struck by lightning. He started a self-created practice called Yin-Yang Great Mopan. Gods, immortals, ghosts, and aliens are all scum.