Gong Tingxian of the Imperial Hospital in the Ming Dynasty also talked about the six-character formula for treating diseases in his book "Shoushi Baoyuan". The book says: "Don't refine the elixir, swallow the jade liquid, exhale the poison from the viscera, and inhale the clarity of heaven and earth." He also said: "The qi of the five internal organs burns all five flavors, but it is also full of six desires and seven emotions. Long-term illness injures the internal organs and attacks the external nine orifices, which leads to the illness of hundreds of skeletons, ranging from addiction to blindness and heavy casualties. Therefore, it is too merciful to treat the diseases of the five internal organs with a six-character prescription. Its method is to expel the poisonous gas from the zang-fu organs by calling words, and to collect the clear gas from heaven and earth and replenish qi by inhaling. The quiz on the same day, the big exam on the tenth day, no illness after the year, long life. Don't pass on the treasure of health to others. There are six ways to shout: shush, heh, hoo, moo, blow, hee and suck. There are six kinds of breathing, namely, the word "ha" is used to treat heart qi, the word "Hu" is used to treat temper, the word "Shu" is used to treat liver qi, the word "blow" is used to treat kidney qi, and the word "gallbladder qi" is used to treat gallbladder qi. This six-character formula divides the internal organs into six parts.