He Lao Da's soy sauce and local sauce brewing skills are a traditional skill project in the fifth batch of representative projects of municipal intangible cultural heritage. He Lao Da's soy sauce and local sauce brewing skills, founded in 1923, are traditional, specific rules, regulations and skills passed down from generation to generation in the process of soy sauce brewing. Soy sauce is made from selected local non-GMO soybeans and fully dried and fermented in traditional clay pots. It is a model of pure natural condiments. The sauce liquid is light brown and clear in appearance, with a strong sauce aroma, prominent umami flavor, and a mellow taste with a long aftertaste.