月水不利而无子者，由风寒邪气客于经血，则令月水痞涩，血结子脏，阴阳之气不能施化，所以无子也。
月水不通而无子者，由风寒邪气客于经血。夫血得温则宣流，得寒则凝结，故月水不通
。冷热血结，搏子脏而成病，致阴阳之气不调和，月水不通而无子也。
月水久不通，非止令无子，血结聚不消，则变为血瘕；经久盘结成块，亦作血症
。血水相并，津液壅涩，脾胃衰弱者，水气流溢，变为水肿。如此难可复治，多致毙人。
《养生方》云∶少时，若新产后，急带举重，子阴挺出或倾邪，月水不泻，阴中激痛，
下塞，令人无子。
子脏冷无子者，由将摄失宜，饮食不节，乘风取冷，或劳伤过度，致风冷之气乘其经血
，结于子脏，子脏则冷，故无子。
带下无子者，由劳伤于经血，经血受风邪则成带下。带下之病，白沃与血相兼带而下也
。病在子脏，胞内受邪，故令无子也。
诊其右手关后尺中脉，浮为阳，阳绝者，无子户脉也。苦足逆冷，带下故也。
五脏之气积，名曰积。脏积之生，皆因饮食不节，当风取冷过度。其子脏劳伤者，积气
结搏于子脏，致阴阳血气不调和，故病结积而无子。
《养生方》云∶月水未绝，以合阴阳，精气入内，令月水不节，内生积聚，令绝子，不复产乳。
Infertility due to irregular menstruation arises from wind-cold pathogenic factors invading the meridians and blood, causing menstrual flow to become obstructed and astringent. Blood coagulates in the uterus (Zi Zang), preventing the interaction and transformation of Yin and Qi, thus resulting in infertility.
Infertility due to amenorrhea is also caused by wind-cold pathogenic factors lodging in the menstrual blood. Blood flows freely when warmed but coagulates when chilled; therefore, menstruation ceases. Cold and hot blood contend and coalesce within the uterus, forming pathology and disrupting the harmony of Yin and Qi, leading to amenorrhea and infertility.
Prolonged amenorrhea not only causes infertility but, if blood accumulates and fails to dissipate, transforms into "Xue Jia" (blood mass). Over time, it forms hard masses, becoming a "Blood Disease." When blood and water combine, body fluids become congested and astringent. In cases of weak Spleen and Stomach function, water qi overflows and spreads, transforming into edema. Such conditions are difficult to treat and often prove fatal. The *Yang Sheng Fang* states: In youth or immediately postpartum, engaging in heavy labor can cause vaginal prolapse or deviation, resulting in impaired menstrual discharge, severe pain in the genital region, lower obstruction, and subsequent infertility.
Infertility due to a cold uterus results from improper care, unregulated diet, exposure to wind and cold, or excessive physical strain. These factors allow wind-cold qi to invade the menstrual blood and condense in the uterus, chilling the organ and causing infertility.
Infertility associated with leukorrhea stems from exertion damaging the menstrual blood. When this blood is invaded by wind pathogens, leukorrhea develops. This condition involves the mixing of white discharge with blood flowing downward. Since the pathology resides in the uterus and the interior of the Bao Luo (uterine cavity) is affected by pathogens, infertility ensues.
Palpation of the Chi position on the right hand behind the Guan position reveals that a floating pulse indicates Yang. If the Yang pulse is absent, it signifies a pulse pattern of infertility. Complaints of cold extremities are attributed to leukorrhea.
The accumulation of Qi in the five Zang organs is termed "Ji" (accumulation). The formation of Zang accumulations is caused by dietary indiscretion and excessive exposure to wind and cold. If the uterus is injured by exertion, accumulated Qi knots and contends within the uterus, disrupting the harmony of Yin-Yang and Blood-Qi, resulting in accumulation pathology and infertility.
The *Yang Sheng Fang* states: Intercourse before menstruation has completely ceased allows essence and Qi to enter the interior, causing menstrual irregularity and internal accumulation. This leads to sterility and the inability to bear children or nurse.