It is a book with a black cover. It is very big, thick, and very old. Although the content is difficult to understand, when you understand the content of the book, you will see "things" that you have never seen in your past life. That "thing" may bring you fear, misfortune, harm, trouble,... Well... Maybe it will also bring you unexpected, other things...
Tang Yuan is a fifth-grade student in the elementary school of Zitengluo Academy. By chance, he got a strange book full of ancient Chinese when he registered for the new semester... Then he started reading this strange book, and strange things happened around him -