Tofu is a green and healthy food invented by Huainan King Liu An, a Chinese alchemist. Today, it has a history of more than 2,100 years and is deeply loved by the people of our country, neighboring countries, and the people of the world. So far, it has a complete range of varieties, various patterns, unique flavors, simple production techniques and convenient eating. It has the effects of high protein, low fat, lowering blood pressure, lowering blood fat, and lowering cholesterol. It is a good delicacy that can be used both raw and cooked, suitable for both the young and the old, to maintain health and maintain longevity. In the hometown of Liu An in Huainan City, Anhui Province, there is an annual Tofu Cultural Festival on September 15th every year.