It toughens the skin, strengthens tendons and prevents blood stagnation while training. This is a hand toughening formula for iron palm or iron fist training. This formula will prevent infection and help the skin become strong, but not callused. During the turbulent days preceding the revolt by the I Ho Chuan (Fists of Righteous Harmony) about 1898; a liniment was created for development of a deadly skill called Iron Fist. When combined with training, this liniment causes a transformation in hand. First, a layer of herbs encases the skin and then the fist is protected with Wei Chi. This covers the joints and bones in the hand. Next the flow of Jing Chi is built up for increased power and finally energy is stored in the fist. The coiled fingers begin to circulate and transmit power as an independent energy center. This skill makes the hand into a weapon even more deadly than a sword.