There is an allusion about the origins of old friends: in the 1930s, an old man visited the Zhouji teahouse every day to drink tea. In a few days, he didn’t go because of a cold. Zhou Ji’s boss was very worried, and he cooked the noodles with the fragrant garlic. At the end, soybean meal, chili, sour bamboo shoots, minced beef, pepper, etc., boiled into a bowl of hot noodles, and sent to the old friend to eat. The hot and sour noodles suddenly increased the appetite of the old man. He made a sweat and caught a cold. Afterwards, the old man was grateful, and the plaque of the old friend's "professional friend" was given to the boss of Zhou. The "old friend" was named after it and gradually became famous.

Laoyou Powder is a local cuisine of Nanning. It was selected as the first batch of 26 intangible cultural heritages announced by Nanning in 2007. It is the same as Guangxi's “four rice noodles” with Liuzhou's snail powder, Guilin's Guilin rice noodles and Zhangzhou's fried rice noodles. . Nanning people think that the sour and delicious old friend powder eats appetizers in summer and eats cold in winter. Old friend powder is a representative of snacks with no different levels of differentiation in the local area. This kind of powder can combine the acid and the spicy in a unique way, forming one of the unique flavors of Nanning snacks. Old friends powder is very popular with people, usually a bowl of belly will have a feeling of support, so that people are very strong. At the same time, it is also a representative of snacks without class differentiation. In the snack bar on the streets of Nanning, not only ordinary people are gathered, you can often see that the bosses who drive BMW are also waiting in line to turn over, just to eat bowls. Friends powder.