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Those with keen vision can be employed to distinguish colors. Those with acute hearing can be employed to listen to sounds. Those who speak fluently and rapidly can be employed to convey discussions. Those whose speech is slow and calm, whose hands are dexterous, and whose minds are careful and precise, can be employed to perform acupuncture and moxibustion (Moxibustion), regulate blood and Qi (Vital Energy) and harmonize their reversal or smooth flow, observe Yin and Yang, and integrate various prescriptions. Those with relaxed joints and supple tendons, and a harmonious mind, can be employed to practice Daoyin Xingqi (Guiding and Leading Qi circulation). Those who speak maliciously and lightly towards others can be employed to apply saliva to abscesses or chant spells to cure diseases. Those with sharp nails and vicious methods, who cause harm in their actions, can be employed to massage accumulations and suppress Bi syndrome (Obstruction Syndrome). When each person utilizes their specific abilities, the methods can be implemented, and their reputations will become prominent; if the wrong people are chosen, success cannot be achieved, and the lineage will not gain recognition. Therefore it is said: only teach those who are suitable; do not teach those who are not suitable. This is what is meant. Those with "toxic" (forceful/harsh) hands can be trained in pressing turtles: place a turtle under a vessel and press on its back from above; after fifty days, the turtle will die. Those with "sweet" (gentle) hands will see the turtle revive as before.

The Northern region is the domain where Heaven and Earth's closing and storing energies gather. The terrain is high with hills and mountains, the wind and cold are biting and icy. The people there enjoy living in the open fields and consuming dairy products. Consequently, they suffer from fullness diseases caused by cold in the Zang organs (Internal Organs), and the appropriate treatment is Moxibustion (Moxibustion). Thus, the art of Moxibustion also originated from the North.

Bencao states: Mugwort (Artemisia argyi) has a bitter taste and a slightly warm nature; it is Yang within Yin, non-toxic, and primarily used for treating all diseases requiring moxibustion. It should be harvested on the third day of the third lunar month and the fifth day of the fifth lunar month. Sun-dried and aged mugwort is superior, believed to ward off evil spirits. Furthermore, regarding the harvesting method, burning mugwort on the fifth day of the fifth lunar month is effective. To prepare mugwort, it must first be dried according to proper procedures, then pounded in a mortar. Dust and debris should be sifted out using a fine sieve. Each batch pounded in a stone mortar should be white and pure. It must be baked until extremely dry so that moxibustion generates strong heat and ignites easily. If moist, it is ineffective.
Zhenglei Bencao states: It originates from Mingzhou. Tujing states: Previously, the specific origin was not recorded, only that it grows in fields. Now it is available everywhere, but mugwort from Qizhou has thick leaves, tall stems, and abundant fruit, with a potent aroma, making it highly effective.
Mencius said: For a disease lasting seven years, seek three-year-old aged mugwort. Danxi stated: Mugwort is extremely hot in nature. When used in fire moxibustion, its energy ascends; when taken as medicine orally, its energy descends.

When Qi (Vital Energy) is excessive, use the draining method; when deficient, use the tonifying method. Where acupuncture is ineffective, moxibustion is suitable. When both Yin and Yang are deficient, fire therapy is indicated. When meridians are sunken/collapsed, fire therapy is indicated. When meridians are hard and tight, fire therapy treats them; when sunken, moxibustion is applied. When collaterals are full and meridians are deficient, moxa the Yin channels and needle the Yang channels; when meridians are full and collaterals are deficient, needle the Yin channels and moxa the Yang channels. For fire tonification, do not blow on the fire; let it extinguish naturally. For fire drainage, blow vigorously on the fire to accelerate the heat transmission, ensuring it extinguishes quickly.