（《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，气血正直衰绝，非气行未至，则气行已过，误刺妄引邪气，坏
乱真气，实实虚虚，其害非小。
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
其所以然者，阳日注腑，则气先至而后血行；阴日注脏，则血先至而气后行。顺阴
阳者，所以顺气血也。
阳日六腑值日者引气，阴日六脏值日者引血。
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
妻闭则针其夫，夫闭则针其妻；子闭针其母，母闭针其子。必穴与病相宜，乃可针也。
噫！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，其甲戌等时主穴不开，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。
灵龟八法，专为奇经八穴而设。其图具后。但子午法，其理易明，其穴亦肘膝内穴，岂
能逃子午之流注哉！
（出自《医学入门》）
人体每日气血周身循环流注于六十六个穴位，每个时辰流注五个穴位（除去六个原穴，那是经脉交接过渡之处）。五行相生或天干相合的时辰为“开”，此时可以针刺；五行相克的时辰为“阖”（闭合），此时不可针刺。阳气生则阴气死，阴气生则阳气死。例如：甲木在午时死亡，在亥时生长；乙木在亥时死亡，在午时生长；丙火在寅时生长，在酉时死亡；丁火在酉时死亡，在寅时生长；戊土在寅时生长，在酉时死亡；己土在酉时死亡，在寅时生长；庚金在巳时生长，在子时死亡；辛金在子时死亡，在巳时生长；壬水在申时生长，在卯时死亡；癸水在卯时死亡，在申时生长。凡是遇到我生、生我以及天干相合的时辰，正是气血生旺的时候，所以可以根据虚实情况辨证施治进行针刺。如果是克我、我克以及处于“阖”闭状态的时辰，气血正处于衰绝之时，要么是经气尚未到达，要么是经气已经经过，如果误刺并妄加引导邪气，会扰乱真气，导致实证更实、虚证更虚，其危害不小。
阳日、阳时、阳穴，阴日、阴时、阴穴。阳以阴作为“阖”，阴以阳作为“阖”，“阖”就是关闭的意思。当处于闭合状态时，就选取本时辰天干与某穴相合的穴位进行针刺。
如果在阳日遇到阴时，或在阴日遇到阳时，那么前面的穴位已经闭合，应当选取与其相合的穴位进行针刺。“合”是指：甲与己相合化土，乙与庚相合化金，丙与辛相合化水，丁与壬相合化木，戊与癸相合化火，这就是五门十变的原理。之所以如此，是因为阳日经气注入六腑，则气先到达而后血运行；阴日经气注入五脏，则血先到达而后气运行。顺应阴阳，就是为了顺应气血的运行规律。
有人问：如果阳日的阳时已过，阴日的阴时已过，遇到急症该怎么办？回答说：夫妻、子母之间可以互相借用。必须根据病情适宜的原则来定：如果妻穴闭合就针刺夫穴，夫穴闭合就针刺妻穴；子穴闭合就针刺母穴，母穴闭合就针刺子穴。必须确保穴位与病情相适应，才可以针刺。
唉！使用穴位时，要先主穴后客穴；使用时辰时，要弃主时而从宾时。
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。如果甲戌等时辰的主穴不开，就针刺客穴。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，不必去计算灵龟八法中的衍数，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。
灵龟八法，是专门为了奇经八脉的八个特定穴位而设立的。其图表在后面。但是子午流注法，其道理容易明白，其穴位也都在肘膝关节以内的部位，难道能逃脱子午流注的规律吗！
(From *Yixue Rumen*)
The human body's Qi and Blood circulate through sixty-six acupoints daily, with five points being influenced in each two-hour period (excluding the six Yuan-Source points, which are sites of meridian transition). When the Five Elements generate each other or the Heavenly Stems combine harmoniously, it is considered "Kai" (Open), at which time acupuncture may be performed. When the Five Elements overcome each other, it is considered "He" (Closed), at which time acupuncture should not be performed. Yang generates Yin while Yin perishes; Yin generates Yang while Yang perishes. For example: Jia Wood dies at Wu hour and is born at Hai hour; Yi Wood dies at Hai hour and is born at Wu hour; Bing Fire is born at Yin hour and dies at You hour; Ding Fire dies at You hour and is born at Yin hour; Wu Earth is born at Yin hour and dies at You hour; Ji Earth dies at You hour and is born at Yin hour; Geng Metal is born at Si hour and dies at Zi hour; Xin Metal dies at Zi hour and is born at Si hour; Ren Water is born at Shen hour and dies at Mao hour; Gui Water dies at Mao hour and is born at Shen hour. Whenever one encounters hours where one generates others, others generate oneself, or where Heavenly Stems combine, this is the time when Qi and Blood are vigorous and flourishing; thus, one can differentiate between deficiency and excess to perform acupuncture. If one encounters hours of mutual overcoming or closed ("He") periods, Qi and Blood are in a state of decline or exhaustion. Either the Qi has not yet arrived, or it has already passed. Erroneous needling and misdirecting pathogenic Qi will disrupt True Qi, causing excess conditions to become more excessive and deficient conditions to become more deficient, resulting in significant harm.
Yang days, Yang hours, and Yang points; Yin days, Yin hours, and Yin points. Yang uses Yin as "He" (Closure), and Yin uses Yang as "He". "He" means closure. When in a closed state, one should needle the point that combines 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 points are already closed; one should select the combining point for needling. "Combining" 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 the principle of the Five Gates and Ten Changes. The reason for this is that on Yang days, Qi enters the Six Fu Organs first, followed by Blood circulation; on Yin days, Blood enters the Five Zang Organs first, followed by Qi circulation. Following Yin and Yang is therefore following the regulation of Qi and Blood.
On Yang days, the presiding Six Fu Organs guide Qi; on Yin days, the presiding Five Zang Organs guide Blood.
One might ask: What if the Yang hours of a Yang day have passed, or the Yin hours of a Yin day have passed, and an acute illness occurs? The answer is: Husband and wife, or mother and son relationships among points can be used interchangeably. One must adapt to the condition: if the "Wife" point is closed, needle the "Husband" point; if the "Husband" point is closed, needle the "Wife" point; if the "Son" point is closed, needle the "Mother" point; if the "Mother" point is closed, needle the "Son" point. It is essential that the point matches the pathology before needling.
Alas! When selecting points, prioritize the Principal point over the Guest point; when selecting hours, abandon the Principal hour in favor of the Guest hour.
For instance, on a Jia day, the Gallbladder Meridian serves as the Principal point, while other points are Guest points. Needling must proceed from Principal to Guest. If the Principal point is not open during hours such as Jia-Xu, then needle the Guest point. By calculating hours based on the day and seeking points along the meridians, one finds clear correspondences between hours and points. There is no need to calculate the derived numbers of the Linggui Eight Methods. This is why one should adhere to the Ziwu Liuzhu method rather than discard it for the Linggui Eight Methods.
The Linggui Eight Methods were specifically established for the eight specific points of the Eight Extraordinary Vessels. Its chart follows later. However, the Ziwu Liuzhu method is easier to understand theoretically, and its points are located within the elbows and knees. How could they escape the laws of Ziwu Liuzhu flow and distribution?