Interest Book

My name is Zhang Guantian, I named it myself because I like to watch the sky. ———————————————————————— Ever since I was born, there has been a piece of golden paper in my mind. Well, before I received the message from it, I thought it was paper. Later, it told me that its name was "Book of Interest". This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.