It is said that in the late Qing Dynasty, there were many vendors in the streets of Chengdu, carrying loads and baskets and selling cold lung slices. The low-cost offal of beef offal is finely processed, pickled and sliced, and mixed with soy sauce, red oil, pepper, Chili noodles, sesame noodles and so on. Unique flavor, low price, especially popular with rickshaw pullers, porters and poor students. In 1930s, there was a couple who set up a stall in Chengdu, Sichuan. The male name is Guo Chaohua and the female name is Zhang Tianzheng. Because the cold lung tablets are beautifully made, the color is golden red and shiny, spicy and delicious, and the flavor is unique. In addition, the couple have a tacit understanding and harmony. One does it, the other sells it, and the small business is thriving. At that time, customers gathered and the demand was in short supply. After the public-private partnership, Guo and his wife merged into Chengdu Catering Company. The company felt that the word "waste" was not very pleasant to hear, so it changed the word "waste" into "lung" and registered "husband and wife lung tablets".

The reason why "lung" is changed to "lung" is because "lung" has an explanation in Kangxi Dictionary, which means "very thin". The chairman of Chengdu Catering Company is very literate, so most people don't understand the true meaning of this "lung". He wrote: As thin as a cicada's wing and shaped like a palm ... Lung slices are not lungs, and they taste delicious. Spicy and delicious; Husband and wife get along well, have harmonious tastes and love each other forever. Beautiful couple, quick lung tablets.