People have four roots, namely, nasal root, breast root, ear root and foot root. "The nose is the root of the seedling, Breath Root is the root of the breath, the ear is the root of the spirits, and the foot is the root of the essence." It can be seen that nose, ear and milk are only the condensation points of essence, while feet are the aggregation points of essence. Clinically, clear-minded, This is why foot massage is so important