Introduction to Lu Tan: In traditional artistic images, the God of Lu often appears wearing a black gauze hat and official uniform. God Lu is the Kuixing that people often hear about. Taoism respects him as the god who dominates literary fortunes and serves as the god of attendants to Emperor Wenchang. The belief in Kuixing flourished in the Song Dynasty and has endured for a long time. It has become the most believed and efficacious god among scholars besides Emperor Wenchang. When the word "Kui" is broken down, half of it means "ghost". Ying Kuixing's face is ugly, and half of it means "dou". Ying Kuixing is eight Dou tall and also belongs to the Big Dipper constellation. It is said that whatever the ink pen in Kuixing's hand criticizes you is, and this is the origin of the legend among literati that "no matter how good your writing is, you are afraid that the ink pen will not nod".