Bagong Mountain is located in the southern suburbs of Huainan City, near the foot of water in the north of Shouxian County, and Huaibei Plain is at the foot of the mountain. It has always been rich in soybeans. There are many springs containing various minerals on the mountain. Use this spring water to grind soybean milk, steamed bread, etc. And the pulp is even, which makes the tofu white, delicate and delicious. The unique conditions provided a material basis for the invention of tofu.