凡人有疾。皆邪气所凑。虽病患瘦弱。不可专行补法。经曰。邪之所凑。其气必虚。如患目赤等疾。明是邪热
所致。可专行泻法治之。其余诸疾。只宜平补平泻。须先泻后补。谓之先泻邪气。后补真气。此乃先师不传之秘也。
今行补法者。令病患吸气一口。随吸转针。如针左边捻针头转向右边。以我之右手大指食指持针。以食指向前。大
指向后。仍捻针深入一二分。便真气深入肌肉之分。如有数穴。根据此法行之既毕。停少时。却用手指于针头上。轻
弹三下。如此三次。仍用我左手大指食指持针。以大指连搓三下。（谓之飞）将针深进一二分。以针头向左边。（谓
之三进三飞）根据此法行至五六次。觉针下沉紧。或针下气热。是气至足矣。即令病患吸气一口。随吸出针急以手按
扪其穴。此谓之补法是也。（大成）
枢扶氏曰。凡补法者。假如此穴合针入五分。须先针入二分。候针下得气再入二分。是至四分又候得气更针入
一分。总共五分止。然后急出针。即以左手大指急按所针穴孔。勿令出血。是为补也。凡泻法者。假令此穴合针五
分。便即入五分。候约得气。便将针退出二分。少停又退出二分。是共提出四分。再少停候得气。又起针漫漫拔出。
不用手闭其针孔。令其气出。或血出。是为泻法也。
Whenever a person falls ill, it is due to the gathering of pathogenic factors (Xieqi). Even if the patient is emaciated and weak, one must not exclusively employ tonification methods. The Classics state: "Where pathogenic factors gather, Qi must be deficient." For instance, in cases such as red eyes, it is clearly caused by pathogenic heat, and one may exclusively employ purgation methods for treatment. For other various diseases, only balanced tonification and purgation are suitable; one must first purge and then tonify. This is called first eliminating pathogenic factors and subsequently replenishing true Qi. This is a secret not readily transmitted by former masters.
When performing tonification now, instruct the patient to take a breath in, and rotate the needle along with the inhalation. For example, when needling the left side, turn the needle tip to the right. Hold the needle with the thumb and index finger of the right hand, pushing the index finger forward and pulling the thumb backward, continuing to twirl the needle deeper by one or two fen. In this way, True Qi can penetrate deeply into the muscle layers. If multiple acupoints are involved, apply this method to all. After completion, pause briefly, then lightly tap the needle head three times with a finger, repeating this three times. Next, hold the needle with the thumb and index finger of the left hand, rub the needle three times continuously with the thumb (this is called "Fei" or Flying), advance the needle deeper by one or two fen, directing the needle tip to the left (this is called "Three Advancements and Three Flights"). Perform this method five or six times until a heavy and tight sensation is felt under the needle, or warmth is perceived, indicating that Qi has arrived sufficiently. At this moment, have the patient inhale, withdraw the needle rapidly upon inhalation, and immediately press and seal the acupoint with the hand. This is what is called the tonification method (from *Zhenjiu Dacheng*).
Shufu stated: Regarding tonification methods, suppose an acupoint requires insertion to a depth of five fen. One must first insert two fen, wait for Deqi (arrival of Qi) under the needle, then insert another two fen. Upon reaching four fen, wait again for Deqi, then insert the final one fen, totaling five fen. Then, withdraw the needle rapidly and immediately press the puncture hole firmly with the thumb of the left hand to prevent bleeding; this constitutes tonification. Regarding purgation methods, suppose an acupoint requires insertion to five fen. Insert directly to five fen, wait for approximately Deqi, then withdraw the needle by two fen. Pause briefly, then withdraw another two fen, totaling a withdrawal of four fen. Wait briefly again for Deqi, then slowly withdraw the needle completely without closing the puncture hole with the hand, allowing pathogenic Qi or blood to exit; this constitutes the purgation method.