Zhang Fei beef is the chief representative of Langzhong cuisine. Its biggest feature is its dark appearance, bright red inside, overflowing fragrance and endless taste. Hot cold noodles are the "cold noodles with a spoonful of hot sauce" mentioned above. Hot cold noodles are not much different from ordinary cold noodles, but their uniqueness lies in seasoning beef sauce. Cold noodles with hot minced beef have both the gluten of cold noodles and the spicy taste of beef. Cold and hot are palatable, cheap and good. Steamed buns with white sugar look ordinary, but they are authentic snacks unique to Langzhong, and can be preserved for 30 days at room temperature. It is a snack created by the Muslim Ha Gongkui in Langzhong during the Qianlong period of Qing Dynasty. Baoning vinegar was founded in the late Ming and early Qing Dynasties, and it is one of the four famous vinegars in China. It is mellow and delicious. When you see local people drinking vinegar like drinks in Langzhong Street, don't make a fuss. Try a drink made of vinegar. Maybe you will fall in love with the sour feeling. Camellia oleifera is my favorite breakfast recipe. Unfortunately, it has not been sold in Chengdu for many years. When I arrived in Langzhong, I found that it was also one of the breakfasts in Langzhong. I got up in the morning and went to the store to eat a bowl of "Camellia oleifera" to savor the taste of childhood. Langzhong's beef noodles, mutton offal noodles, sour bean noodles and other pasta dishes have unique flavors, and the stalls are not big and simple. It is not something you can do in three or five days to know how to find those humble small shops and eat all the delicious food one by one. Langzhong native products can be summarized by 1-4 words: vinegar-preserved eggs-beef jerky-sugar steamed bread.