Dried vegetables and pork are said to have been invented by Xu Wenchang in the Ming Dynasty. Although Xu Wenchang was proficient in poetry, writing, books and painting, he was poor in his later years. At that time, Yin Shan Mahayana Lane opened a new butcher shop and asked Xu Wenchang to write a signboard. After the signboard was written, the shopkeeper paid the bill with pork belly. Xu Wenchang was so happy that he didn't know the taste of meat for months, so he hurried home to cook. Unfortunately, he is penniless and can't afford salt and sauce. Remembering that there were still some dried vegetables under the covers, I cooked them, but they were delicious. Since then, they have spread among the people. Dried vegetables are better stewed than pork, steamed and crisp, and taste wins. Crisp, soft and waxy, oily but not greasy, the color is purplish red, salty and sweet, and quite idyllic.