The hometown of Sancun (also known as Sanjiajia), named after Sancun, Xiaohe Township, Panlong, was formed during the Hongwu period in the early Ming Dynasty. It has a history of nearly 100 years and has been passed down from generation to generation in the village. Founded on June 23, 2003, Xiaohe Sancun Lianying Pickles Factory in Panlong District of Kunming City is a representative production enterprise of Sancun Laojiao. The operator is Li Zuxiang, and the unified social credit code is 92530 103MA6MPYRU4E. The address of the enterprise is located at No.871C- 165438, Heavy Industry Community Neighborhood Committee, Ciba Sub-district Office, Panlong District, Kunming City, Yunnan Province. The industry is agricultural and sideline food processing industry, and its business scope includes: pickles processing and sales (projects subject to approval according to law can only be carried out after approval by relevant departments). The current business status is survival (in business, in business, there is a record). Have a food production license.

Lianying Pickle Factory was established in 2002 and registered the trademark of Lianying in 2005. An old brand for nearly 20 years. Since the establishment of the factory, after careful management, it has supplied many restaurants and canteens, and the brand has gradually been recognized. Through continuous efforts,

20 12, "Three Villages' Hometown" was included in the list of intangible cultural heritage protection in Panlong District; On 20 14, Comrade Li Zuxiang, director of Lianying pickles factory, was listed as the representative inheritor of the intangible cultural heritage project in Panlong District. At present, with the support of all levels, Lianying Pickle Factory has become the non-genetic bearing point of Sancun Laojiao and the cultural heritage base of Lanlongtan community, which has contributed to the cultural heritage behind Sancun Laojiao and the protection and dissemination of traditional skills.

Li Zuxiang is a descendant of "brand" Sancun old sauce, and his mother Zhang's "Sanjia old sauce" is a well-known brand of Sancun. Zhang inherited the traditional old sauce making technology of his ancestors and carried it forward. Since 2003, Li Zuxiang and his daughter-in-law have been responsible for the production and sales of "Triple Win Old Sauce". The production of Sancun old sauce has its own unique skills and formula. Li Zuxiang inherited his mother's traditional production technology and formed his own production skills and formula through his own years of practice.

The characteristics of Sanjia Lianying old sauce: purplish red, delicate, spicy and sweet, pure sauce flavor and endless aftertaste. Can be used for: braising and stewing meat; Mix cold dishes; French fries; Boiled potatoes and other uses. As a local flavor food with positive spicy taste and good color, it is a favorite seasoning ingredient of Kunming people and has a large market demand. Due to the limitation of geographical location and season and the traditional manual production method, the output is low, with an annual output of only about 30 tons, which is basically sold locally. Therefore, it is a rare seasoning food in the market, which is basically in short supply.

Tips for preservation of Sanjia Lianying old sauce: First of all, it must be kept in a cool, low temperature, dark and dry place. Generally speaking, the refrigerator is the best storage method for families. If used directly in the kitchen, the high temperature emitted during cooking is not conducive to the preservation of sauce, so everyone must remember to keep it in the refrigerator when taking it home.