Calculation Book

It has been passed down for thousands of years, and it has been carried here and there, but day by day, it is all at a loss. The sun and moon are in the sky, the fog disperses, the veil is unveiled, and the reality is real. In the city of daily life, there are existences unknown to you. When all living beings are sleeping, everything will come out of the clouds. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.