The Definition Domain and Corresponding Rules of Aze

What is this, a pocketbook? Why is it in my schoolbag? "Arze's Domain of Definition and Correspondence Laws" actually has my name on the cover. Who came up with this to mess with me, right? Open the title page: "Constructor function f(x)=Aze's fantasy Domain X={All matter in the world} Value range Y={Aze's fantasy world}" What's written on it is weird, and it's all my name. Azze was very curious and turned back. Every page after that said "f (x) = What a ridiculous notebook. I'm afraid my math brain has gone bad, the young man thought. But when the boy filled in the content carelessly, a miracle happened quietly. Begins, a world full of mystery and fantasy. Do you want to come to Aze's world?