Xiaoman is a beautiful little calico.
After Xiaoman's death, in order to return to his master again, he signed an agreement with Liang Qu, the master of Maomao Guan Guan, and became a working cat.
This book is called "The Story of Xiaoman's Working", also known as "The Story of Liang Qu Cating".
Concept: The world wouldn't be possible without kittens