凡医家至人家看病，恐有瘟疫潦劳传染之疾，其法∶
凡人未至其病家，先须浣口、洗手，望空祝白。方至其家，且要至诚，立不中门，坐不
靠壁
起淫念，休起贪心，勿生嫉妒，专要行方便心。此是阴阳邪气，先不敢进矣。凡接病家所谢
之物，务要先举手叩齿谢天，然后以左手接之。如出门回家，便在地下拾一叶或草，绝做两
段，分丢两处。至长流水边，浣口、洗手。望太阳，默祝云∶至某家治病回得，何物并无惹
带。转身便行，不可回头，即无传染矣。
生一加五，补生泻成。男子左补右泻，女子右补左泻。
水一 火二 木三 金四 土五
《易》曰∶
天一生水壬与子，地六成之癸与亥。肾应之水，吹气出于肺，属阴，故寒。
地二生火丁与巳，天七成之丙与午。心应之火，呵者贺也，怨也。
天三生木甲与寅，地八成之乙与卯。肝应之木，嘘气出丹田，属阳，故温。
地四生金辛与酉，天九成之庚与申。肺应之金， ，鼻中出气。
天五生土戊与辰，地十成之己与未。脾应之土，呼，外息也，一呼一吸为一息。
又曰∶
三焦相火取嘻，此应五脏六腑，呼吸出入门户也。嘻者，噫嘻，嗟也。嘻，声恨也。冷
补之时，使气至病所，更用生成之息，故令病患鼻中吸气天气入，口中出气地气出，自觉热矣。
热泻之时，使气至病所，以更用生成之息数，令病患鼻中气法天气出，口中吸地气入，按所
病在脏腑之数，自觉清凉矣。
法曰∶补冷，天先吸，鼻中先吸气，口中出气。热泻，地先行，口内先吸气，鼻中出气
。两窍互换，取天气出、地气入，地气出、天气入。生成至数，推按病所脏腑虚实之数呼吸。
急提慢按逆吸气，慢提急按随呼吸。随补迎泻为呼吸，此理呼吸至精微。
Whenever a physician visits a patient's home, fearing infection from epidemic fevers (Wenyi), consumptive diseases (Laolao), or other contagious illnesses, the following method should be observed:
Before arriving at the patient's residence, one must rinse the mouth and wash the hands, and make a verbal offering to the sky. Upon entering the house, one must maintain sincerity and reverence, standing not in the center of the doorway and sitting without leaning against the wall. One must not harbor lustful thoughts, greed, or jealousy, but instead cultivate a mind of compassion and convenience. This prevents Yin and Yang pathogenic qi (Yin-Yang Xieqi) from invading the body. When accepting gifts or tokens of gratitude from the patient's family, one must first raise the hand and click the teeth to thank Heaven, then receive the item with the left hand. Upon returning home after the visit, pick up a leaf or blade of grass from the ground, break it into two pieces, and discard them in two separate places. Go to a flowing stream, rinse the mouth, and wash the hands again. Face the sun and silently pray: "Returning from treating illness at [Name]'s house, I carry no contagion." Turn and walk away immediately without looking back, thus avoiding infection.
"Sheng adds five" refers to the tonification method; "Sheng drains Cheng" refers to the sedation method. For men, tonify the left and sedate the right; for women, tonify the right and sedate the left.
Water corresponds to 1, Fire to 2, Wood to 3, Metal to 4, Earth to 5.
The *I Ching* states:
Heaven generates Water (1); Ren and Zi correspond to it. Earth completes it (6); Gui and Hai correspond to it. The Kidney corresponds to Water. Blowing qi originates from the Lung, belongs to Yin, and is therefore cold.
Earth generates Fire (2); Ding and Si correspond to it. Heaven completes it (7); Bing and Wu correspond to it. The Heart corresponds to Fire. "Ha" signifies celebration or resentment.
Heaven generates Wood (3); Jia and Yin correspond to it. Earth completes it (8); Yi and Mao correspond to it. The Liver corresponds to Wood. "Xu" qi emanates from the Dantian, belongs to Yang, and is therefore warm.
Earth generates Metal (4); Xin and You correspond to it. Heaven completes it (9); Geng and Shen correspond to it. The Lung corresponds to Metal; qi enters and exits through the nose.
Heaven generates Earth (5); Wu and Chen correspond to it. Earth completes it (10); Ji and Wei correspond to it. The Spleen corresponds to Earth. "Hu" refers to exhalation; one inhalation and one exhalation constitute one breath (Yi Xi).
It is also said:
The Sanjiao (Triple Burner) Xianghuo (Ministerial Fire) uses the sound "Xi," corresponding to the five Zang and six Fu organs, which are the portals of respiration. "Xi" implies sighing or lamentation, carrying a tone of resentment. In cases of cold requiring tonification, guide the qi to the disease site, then use the Sheng-Cheng breathing count: let the patient inhale through the nose to draw in Heavenly Qi and exhale through the mouth to release Earthly Qi, inducing a sensation of warmth. In cases of heat requiring sedation, guide the qi to the disease site, then use the Sheng-Cheng breathing count: let the patient exhale through the nose to release Heavenly Qi and inhale through the mouth to draw in Earthly Qi, adjusting according to the numerical correspondence of the affected Zang-Fu organs, inducing a sensation of coolness.
The method states: For tonifying cold, Heavenly Qi leads first: inhale through the nose, exhale through the mouth. For sedating heat, Earthly Qi leads first: inhale through the mouth, exhale through the nose. The two orifices interchange, taking Heavenly Qi out/Earthly Qi in, and Earthly Qi out/Heavenly Qi in. Use the Sheng-Cheng numbers to calculate and press based on the deficiency or excess of the affected Zang-Fu organs during respiration. Rapid lifting and slow pressing coordinate with reverse inhalation; slow lifting and rapid pressing coordinate with forward respiration. Following tonification and welcoming sedation as respiratory principles represents the most subtle essence of respiration theory.