1, according to legend, in the 1930s, near Shaocheng, Chengdu, there was a man named Guo Chaohua who, together with his wife, made a business of making and selling cold lung slices. The couple personally operated it, walking around the streets, carrying baskets and selling them. The lung slices they sell are actually scalps, hearts, tongues, tripes and beef, and they don't use lungs. Pay attention to the selection of materials, elaborate production and exquisite seasoning. The husband and wife lung slices are large and thin, glutinous and tasty, spicy and delicious, tender and slag-melting. Deeply loved by the masses, in order to distinguish it from other lung films, it is called "husband and wife lung films". After the establishment of the store, it is more particular about the materials used and the quality is improving day by day.

2. Later, through public-private partnership, the Guo couple merged into Chengdu Catering Company, Sichuan Province. After decades of efforts by the company, the couple's lung slices became famous snacks. By the 1980s, the catering company had registered the trademark of "Couple Brand" for "Lung Tablet", and the Ministry of Internal Trade also awarded the honorary title of "China Time-honored Brand" to "Husband and Wife Lung Tablet", which became one of the Sichuan dishes that foreign tourists must taste when they came to Sichuan.