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Yu stated: The *Mai Jing* (Pulse Classic) records: When examining the pulse, if the pulse of the Hand-Shaoyin (Heart) meridian beats vigorously (excessively active), it indicates pregnancy. This is because the Hand-Shaoyin belongs to the Heart meridian, and the Heart governs the blood vessels. Furthermore, the Kidney serves as the gate of the Bao Palace (uterus) and the house of the fetus. If the Kidney pulse at the Chi position (wrist cun-chi-kuan location, reflecting kidney qi) remains unceasing upon pressure, it should also be judged as pregnancy.

Moreover, during the first month of a woman's pregnancy, the Foot-Jueyin Liver meridian nourishes the fetus; in the second month, the Foot-Shaoyang Gallbladder meridian; in the third month, the Hand-Jueyin Pericardium meridian; in the fourth month, the Hand-Shaoyang Sanjiao (Triple Burner) meridian; in the fifth month, the Foot-Taiyin Spleen meridian; in the sixth month, the Foot-Yangming Stomach meridian; in the seventh month, the Hand-Taiyin Lung meridian; in the eighth month, the Hand-Yangming Large Intestine meridian; in the ninth month, the Foot-Shaoyin Kidney meridian; and in the tenth month, the Foot-Taiyang Bladder meridian. Thus, each meridian is responsible for nourishing for thirty days. If, during the designated month of nourishment, the meridian's Qi and Blood are not balanced (deficiency or excess), the pregnancy will become unstable, potentially leading to vaginal bleeding and miscarriage.

The twelve meridities of the hands and feet differ in their abundance and deficiency of Qi and Blood. For instance, the Hand-Foot Jueyin and Hand-Foot Taiyang meridians are characterized by little Qi and much Blood; the Hand-Foot Taiyin and Hand-Foot Shaoyin meridians by little Blood and much Qi; the Hand-Foot Shaoyang meridians by much Qi and little Blood; and the Hand-Foot Yangming meridians by abundant Qi and much Blood. The method for stabilizing the fetus should follow the specific meridian corresponding to each month, adjusting based on the deficiency or excess of Qi and Blood, thereby avoiding the risk of miscarriage. If the pregnant woman contracts wind-cold or develops other symptoms, treatment should be adjusted according to the respective methods.

Jiegu (Zhang Yuansu) stated: In treating diseases related to pregnancy and childbirth, one should discuss them from the perspective of the Jueyin meridian, as it is the source of Qi generation and transformation. Jueyin and Shaoyang are exterior-interior pairs; therefore, treatment methods must not damage the Stomach Qi or the Upper and Middle Jiao (Upper Jiao refers to Heart and Lung; Middle Jiao refers to Spleen and Stomach). There are three prohibitions: do not induce sweating, do not purge downward, and do not promote urination. Inducing sweating damages the Yang Qi of the Upper Jiao; purging downward causes rapid pulse and disturbs Spleen Qi; promoting urination leads to the loss of internal Body Fluids, resulting in dryness of the Stomach. The principle of preparing medicine is that if these three prohibitions are not violated, Ying (Nutritive) and Wei (Defensive) Qi will naturally harmonize, and chills and fever will cease. For example, if Qi is weak, add Huangqi (Astragali Radix); if there is stabbing pain due to Blood stasis, combine with Danggui (Angelicae Sinensis Radix); if there is abdominal pain, add Shaoyao (Paeoniae Radix). Generally, postpartum conditions caused by epidemic pathogens are treated by modifying Xiao Chaihu Tang (Minor Bupleurum Decoction); miscellaneous disorders are treated by modifying Siwu Tang (Four Substance Decoction). One should carefully examine the pulse and symptoms before applying these treatments.