In the last life, after Xuan Qing's body died and his soul disappeared, he watched his little apprentice act as someone else's puppet and kill everyone. Now that he has been reborn, he can no longer let anyone tarnish his face or destroy his pride. So he made up his mind to educate his apprentice well and use invisible shackles to make the apprentice stay by his side and serve him tea and water. Little did he know that his apprentice... Was always better than his master, and he only wanted to break his own legs. The tsundere master pretends to be stupid, pretends to be stupid, and tolerates his apprentice's dark and crazy nature, turning into a cute little cutie. This book is also known as "The Apprentice is Not a Little Puppy", "Wearing a Mask to Fall in Love", and "Everyone is a Little Bad Guy"