Who Modified My Brain

Someone modified Fang Yu's brain and also modified the world. The moon was changed into a triangle, the sun was changed into a rooster, and even the cow became a flying animal... On this day, Fang Yu woke up and found that everything around him had changed. He was confused: "Who am I? Where am I? What am I going to do?" Don't let yourself know who modified it, otherwise it will make you look better.