In the late Kangxi period of the Qing Dynasty, rice vinegars were brewed and sold in the market of Nachen. Among them, "Su’s Rice Vinegar" was famous for its unique and exquisite brewing skills. It contains a small amount of acetic acid, and it is slightly tawny and transparent, soft and pure, and tastes moderately sweet and sour, really delicious. It is mellow and can be drunk directly. It is suitable for seasoning, cooking, diet therapy and health care. It is known as "No.1 rice vinegar in Nanning".