Su Jianglin, the last night watchman of Jinan oil vortex, ate Su Jianglin's oil vortex when Chairman Mao 1958 inspected Jinan. Su Jianglin said that it was Master Geng who pushed the oil spin to the whole country and made it a national famous food. He said that Geng later left Wen Sheng Garden to sell oil spinning machines near the present Beiyang Grand Theater. 1956, Jinan held a famous food conference, and Geng's oil swirl was selected as a famous food and promoted to the whole country, so Geng was transferred to Jufengde Hotel. A few months later, Su Jianglin came to Jufengde and signed an apprenticeship agreement according to the old tradition, becoming Geng's only apprentice. Su Jianglin said: "I am an apprentice in the old way. I let the master check it for a year first. This year, I only smashed a coke to light a fire, mixed flour and washed the chopping board. The master will close the door when making the noodle box, and he is the only one in the room. Later, the master felt that I was still a piece of material and officially taught me the craft. " Su Jianglin said: "Every process of oil spinning taught by Master Geng is not allowed to be sloppy. He said that you can't be lazy in making money, let alone cut corners. In that case, I am sorry for the customers who eat oil. I am sorry for this door that has been passed down for hundreds of years. " Of course, Su Jianglin not only made oil swirls according to the old tradition, but also made innovations: he made egg oil swirls, horseshoe oil swirls and peach oil swirls. But innovation belongs to innovation, and he is sure of one thing-the most basic things cannot be changed, and innovation is carried out on the basis of tradition, not random creation.