Mao Shuai, an ugly man who was fired, owes rent, and is 15cm tall, has become what the neighbors call "Mao Shuai". It wasn't until he picked up a small, palm-sized black dog on a rainy night that he realized that he had picked up a living ancestor - the supreme soul-piercing dog ancestor of the alchemy world! A dog's bark can stabilize the body, a dog's nose can identify treasures, a dog's tongue can purify, and even peeing can leave a mark of the soul! From then on, the waste counterattacked, picking up leaks from official kilns for ten yuan, and backhandedly slapping the evil landlord in the face, and was promoted in the antiques circle, business world, and the world of immortality! Others rely on the system to counterattack, but Mao Shuai relies on the dog to win! "Ancestor, who is not smart enough to beat me today?" "Idiot, buy me ten hams first, or I won't cheat on you!"