By chance, Lu and Shi Jin met in Water Margin, and they hit it off. At that time, after Shi Jin lost his ancestral home, he wanted to go to Yan 'an Hall to find Master Wang Jin, so he came to Wei Zhou Running Hall. At that time, he worked as a prefect in Jinglvefu, which was equivalent to the police battalion chief, so Shi Jin met him. When drinking in a restaurant, Lu was deeply moved by the story, so Lu wanted to help the girl, so he offered to borrow money from Shi Jin, who took out an ingot of twelve silver from the parcel and put it on the table without saying anything. It is estimated that Luda must have been moved by Shi Jin's frankness at that time. He is young, frank and a good brother.