(医学入门)
人每日一身周流六十六穴。每时周流五穴。(除六原穴乃过经之所)相生相合者为开则刺
之。相克者为阖则不刺 阳生阴死阴生阳死。如甲木死于午。生于亥。乙木死于亥。生于午。丙
火生于寅。死于酉。丁火生于酉。死于寅。戊土生于寅。死于酉。己土生于酉。死于寅。庚
金生于巳。死于子。辛金生于子。死于巳。壬水生于申。死于卯。癸水生于卯。死于申凡值
生我我生及相合者。乃气血生旺之时。故可辨虚实刺之。克我我克。及阖闭时穴。气血衰绝
。非气行未至。即气行已过不得妄引邪气。坏乱真气也。
阳日阳时阳穴。阴日阴时阴穴。阳以阴为阖。阴以阳为阖。阖者闭也。闭则以本时天干
与某穴相合者针之阳日遇阴时。阴日遇阳时。则前穴已闭。取其合穴针之合者。甲与己合化土。
乙与庚合化金。丙与辛合化水。丁与壬合化木。戊与癸合化火。五门十变。此之谓也
其所以然者。阳日注腑则气先至而血后行。阴日注藏则血先至而气后行顺阴阳者。所以
或曰阳日阳时已过。阴日阴时已过。遇有急疾奈何。曰夫妻子母互用。必适其病为贵耳。
妻闭则针其夫。夫闭则针其妻。子闭则针其母。母闭则针其子。必穴与病相宜。乃可针也。
用穴则先主而后客。用时则弃主而从宾
假如甲日胆经为主。他穴为客。针必先主后客。其甲戍等时主穴不开。则针客穴。
按日起时。循经寻穴。时上有穴穴上有时。分明实落。不必数上衍数。此所以宁守子午而舍尔灵龟也。
(按徐氏灵龟飞腾针法。乃无稽之说。故此不录。所可宗者惟八脉交会八穴也)
（《医学入门》记载）人体气血每天在全身循环流注六十六个穴位。每个时辰流注五个穴位。（除了六个原穴是经气经过之处）。相生相合的穴位为“开”，可以针刺；相克的穴位为“阖”，则不针刺。阳生阴死，阴生阳死。例如：甲木死于午时，生于亥时；乙木死于亥时，生于午时；丙火生于寅时，死于酉时；丁火生于酉时，生于寅时；戊土生于寅时，死于酉时；己土生于酉时，生于寅时；庚金生于巳时，死于子时；辛金生于子时，生于巳时；壬水生于申时，死于卯时；癸水生于卯时，死于申时。凡是遇到生我、我生以及相合的时辰，是气血生长旺盛的时候，所以可以辨别虚实进行针刺。遇到克我、我克以及阖闭的时辰，气血衰绝，不是经气尚未到达，就是经气已经经过，不可妄动以引入邪气，破坏真气。
阳日阳时取阳穴，阴日阴时取阴穴。阳日以阴时为阖，阴日以阳时为阖。“阖”就是关闭。关闭时，则以本时辰的天干与某个穴位相合者来针刺。阳日遇到阴时，阴日遇到阳时，则前面的穴位已经关闭，取其相合的穴位进行针刺。所谓相合，是指：甲与己合化土，乙与庚合化金，丙与辛合化水，丁与壬合化木，戊与癸合化火。这就是所谓的“五门十变”。
其所以如此的原因在于：阳日经气流注于腑，则气先到达而血后运行；阴日经气流注于脏，则血先到达而气后运行。这是顺应阴阳规律的做法。
有人说：如果阳日阳时已过，阴日阴时已过，遇到急症怎么办？回答说：夫妻、子母之间可以互相借用，必须根据病情适宜为准。妻子关闭则针刺丈夫的穴位，丈夫关闭则针刺妻子的穴位；儿子关闭则针刺母亲的穴位，母亲关闭则针刺儿子的穴位。必须穴位与病情相适应，才可以针刺。使用穴位时，先主穴后客穴；使用时辰时，弃主时而从宾时。
例如：甲日胆经为主穴，其他穴位为客穴。针刺时必须先主后客。如果在甲日、戌时等时辰主穴不开，则针刺客穴。按照日期推算时辰，沿着经络寻找穴位。时辰上有对应的穴位，穴位上有对应的时辰，分明确切，不需要计算衍数。这就是为什么宁可坚守子午流注法而舍弃灵龟八法的原因。
(From *Yixue Rumeng* [Introduction to Medical Learning]) The human body's Qi and Blood circulate through sixty-six acupoints daily. Five acupoints are circulated through each two-hour period (excluding the six Yuan-Source points, which are passages for meridian Qi). Acupoints that generate or harmonize with each other are considered "Open" (Kai) and can be needled. Those that overcome each other are considered "Closed" (He) and should not be needled. Yang generates, Yin dies; Yin generates, Yang dies. For example: Jia Wood dies at Wu hour, is born at Hai hour; Yi Wood dies at Hai hour, is born at Wu hour; Bing Fire is born at Yin hour, dies at You hour; Ding Fire dies at You hour, is born at Yin hour; Wu Earth is born at Yin hour, dies at You hour; Ji Earth dies at You hour, is born at Yin hour; Geng Metal is born at Si hour, dies at Zi hour; Xin Metal dies at Zi hour, is born at Si hour; Ren Water is born at Shen hour, dies at Mao hour; Gui Water dies at Mao hour, is born at Shen hour. Whenever one encounters hours where there is mutual generation (Sheng) or harmony (He), it is a time when Qi and Blood are flourishing and vigorous; thus, deficiency and excess can be assessed and needling performed. When encountering hours of mutual overcoming (Ke) or closure (He), Qi and Blood are declining or exhausted. Either the Qi has not yet arrived, or it has already passed; one must not recklessly induce pathogenic factors to disrupt the True Qi.
On Yang days and in Yang hours, Yang acupoints are used; on Yin days and in Yin hours, Yin acupoints are used. On Yang days, Yin hours serve as "Closed"; on Yin days, Yang hours serve as "Closed." "Closed" means sealed. During closed periods, needling should target the acupoint that harmonizes with the Heavenly Stem of the current hour. If a Yang day encounters a Yin hour, or a Yin day encounters a Yang hour, the previous acupoint is already closed; instead, the harmonizing acupoint should be needled. Harmonization refers to: Jia combines with Ji to transform into Earth; Yi combines with Geng to transform into Metal; Bing combines with Xin to transform into Water; Ding combines with Ren to transform into Wood; Wu combines with Gui to transform into Fire. This is what is referred to as the "Five Gates and Ten Changes."
The reason for this is that on Yang days, Qi flows into the Fu organs first, followed by Blood; on Yin days, Blood flows into the Zang organs first, followed by Qi. This follows the principles of Yin and Yang.
Some ask: What if the Yang hours of a Yang day or the Yin hours of a Yin day have already passed, and an acute condition arises? The answer is: Spouses and Parent-Child pairs may be used interchangeably, provided they are suitable for the specific disease. If the Wife point is closed, needle the Husband point; if the Husband point is closed, needle the Wife point. If the Child point is closed, needle the Mother point; if the Mother point is closed, needle the Child point. The acupoint must be appropriate for the condition before needling. When selecting acupoints, prioritize the Principal (Zhu) over the Guest (Ke); when selecting hours, abandon the Principal hour and follow the Guest hour.
For instance, on a Jia day, the Gallbladder Meridian serves as the Principal, while other acupoints are Guests. Needling must proceed from Principal to Guest. If the Principal acupoint is not open during hours such as Jia or Xu, then needle the Guest acupoint. Calculate the hours based on the day, and trace the meridians to find the acupoints. Each hour corresponds to specific acupoints, and each acupoint corresponds to specific hours; these correspondences are clear and definite. There is no need to calculate complex numerical derivations. This is why one should adhere strictly to the Zi Wu Liu Zhu method rather than discard it for the Ling Gui Ba Fa method.
(Note: Xu’s Ling Gui Fei Teng acupuncture methods are considered baseless theories and are therefore not recorded here. The only method worthy of reverence is the Eight Confluent Points of the Extraordinary Vessels.)