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Jiezai stated that after childbirth, the Spleen and Stomach are severely deficient. There are many cases where excessive food intake leads to food stagnation and fever. If this is mistakenly treated as Blood deficiency, it will be ineffective. Therefore, when encountering postpartum fever, one must inquire about dietary habits, checking for signs of food retention such as abdominal fullness and distension, anorexia, or diarrhea, and treat it solely as food stagnation. Only if the fever subsides with dietary regulation should the standard method of tonifying Blood be employed. However, Jiezai's discussion only mentions inquiry (Wang) but not pulse diagnosis (Mai), and only addresses the excess symptoms of food stagnation as a branch manifestation, without discussing the underlying deficiency of Qi and Blood in the postpartum state. Therefore, Lizhai stated: In the aforementioned conditions, if there is chest and epigastric fullness, belching with a rotten odor, aversion to food, acid regurgitation, vomiting, diarrhea, and fever, this indicates food stagnation. It is appropriate to use Si Jun Zi Tang (Four Gentlemen Decoction) added with Hou Po (Magnolia Bark), Shan Zha (Hawthorn Fruit), and Qu (Medicated Leaven). If there is chest and epigastric stuffiness, poor appetite with fever, or difficulty digesting food, this indicates Spleen Qi deficiency. It is appropriate to use Si Jun Zi Tang (Four Gentlemen Decoction) added with Pao Jiang (Prepared Ginger). Using harsh and drastic agents would further damage the Yuan Qi (Original Qi), which would be a mistake.

Postpartum hemorrhage accompanied by profuse sweating constitutes a dual deficiency of Yin and Yang. This is an extremely critical condition. The *Classic* states: "Yang Qi, when refined, nourishes the Shen (Spirit); when soft and firm, it nourishes the tendons." After childbirth, since Blood has been lost, and sweating is excessive, this leads to the loss of Yang. Sweat originates from Blood and belongs to Yin; when Yin is depleted, Yang follows and dissipates. Thus, it is termed the loss of Yang. The medication used differs from other syndromes. For mild cases, Ren Shen (Ginseng Root), [missing character in original text], Bai Zhu (Atractylodes Rhizome), Huang Qi (Astragalus Root - inferred contextually though missing in text), Ma Huang Gen (Ephedra Root), Fang Feng (Saposhnikovia Root), and Gui Zhi (Cinnamon Twig) are used. For severe cases, Ren Shen (Ginseng Root) and Fu Zi (Aconite Lateral Root) are used.

The *Jin Gui Yao Lue* states: "When a puerpera suffers from Yu Mao (Depression and Vertigo), her pulse is faint, and only the head sweats. The reason is that Blood deficiency leads to Jue (Reversal/Cold extremities), and Jue inevitably leads to Mao (Vertigo/Clouding of consciousness). For a patient with Mao to resolve, there must be profuse sweating over the whole body. Due to Blood deficiency causing lower Jue, the isolated Yang rises outward, hence only the head sweats. Therefore, a puerpera welcomes sweating because the loss of Yin Blood leads to relative excess of Yang. When sweating occurs, Yin and Yang are restored. However, in postpartum Yu Mao, deficiency is predominant and pathogenic factors are few, so the pulse is faint, indicating deficiency of Middle Qi. The Yin and Yang of the entire body are disharmonious, so the body does not sweat, but only the head sweats. Why? Blood deficiency causes lower Jue, depleting the Yin Qi below, while Yang becomes isolated and rises upward, causing head sweating. Why is recovery welcomed through sweating? Because the puerpera has lost excessive Blood during childbirth, resulting in Yin depletion. Compared to Yin, Yang is relatively excessive. Therefore, she welcomes sweating, which damages the excess Yang to align with Yin, thereby restoring balance between Yin and Yang. Hence it is said that 'Yin and Yang are then restored.'"