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During pregnancy, if symptoms arise, the emphasis is on preserving the fetus. After childbirth, if symptoms arise, the emphasis is on warming and tonifying. This is a very stable and appropriate principle.

Unceasing metrorrhagia and metrostaxis (Beng Lou) represent the most severe form of menstrual irregularity. Non-cyclical bleeding that drips continuously is called "Lou Xia" (Leaking Down). Sudden profuse bleeding, resembling a landslide, is called "Beng Zhong" (Central Collapse). Progressing from leaking to dripping, and from dripping to collapsing, it is fundamentally a disorder of the blood. In the initial stage of metrorrhagia and metrostaxis, treatment should prioritize stopping the bleeding to block the flow (treating the branch), using Modified Siwu Decoction or Shihui Wan as the primary formula. Once the bleeding has just stopped, heat-clearing is required to clear the source (treating the root), using Dihuang Tang or Qixiao Siwu Tang as the primary formula. After the bleeding has ceased and internal heat has been eliminated, further treatment should focus on tonifying blood and qi to stabilize the root, using Modified Buzhong Yiqi Tang as the primary formula. It must be understood that metrorrhagia and metrostaxis are caused by deficiency of Middle Qi, which fails to contain the blood, combined with accumulated heat in the interior forcing blood to move recklessly, resulting in intermittent or sudden profuse bleeding, constituting Beng or Lou. In the initial stage of this condition, one should first stop the bleeding to block the flow; this is the principle of treating the branch in acute situations. Once the blood has stopped, if the source is not cleared, the torrential momentum cannot be restrained. Once the heat is cleared, if the root is not stabilized, the scattered Yang Qi will have no means to sustain itself. Therefore, the method for treating metrorrhagia and metrostaxis must adhere to these three steps, treated in sequence, so as to avoid errors. The sages said: "In treating lower bleeding syndromes, one must use formulas like Sizijunzi Tang to conclude the treatment," the implication of which is profound.

Recently, many physicians have mistakenly believed that postpartum conditions belong to Cold patterns. Consequently, they invariably use processed ginger (Pao Jiang), prepared rehmannia (Shu Di), cinnamon bark (Rou Gui), and ginseng (Ren Shen) for all postpartum cases. They do not realize that postpartum blood depletion, if treated solely with such warming and tonifying herbs without considering the blood loss, can lead to immediate death. I have seen many such cases, but my medical records absolutely do not contain such errors. This proves that those with profound scholarly foundations know how to skillfully use Ren Shen while minimizing the use of blood-tonifying herbs. As for methods to resolve phlegm and clear the constitution, these have yet to be fully appreciated, indicating a deficiency in their knowledge.

Beng syndrome involves the disarray of meridians and collaterals, actually stemming from damage to the Chong and Ren vessels, which fail to constrain menstrual blood. Treatment should involve massive tonification of Qi and Blood. One should use Juyuan Yixue Dan to vigorously tonify the source, adding a small amount of heat-clearing herbs to treat the branch. By nourishing Yin and draining Yang, the Beng will naturally cease. If the condition is due to reckless movement of blood caused by Heat, with a solid and forceful pulse and foul-smelling blood, then Siwu Liangge San should be used, mixed with fresh leek juice for administration. However, when treating blood disorders, one must strictly avoid using purely cold-natured herbs, because blood coagulates upon encountering cold. If metrorrhagia is abruptly stopped at the onset, there is a risk of accumulation and stagnation; if it is not stopped, there is a danger of dizziness and sudden collapse. One must employ methods that move blood while simultaneously stopping bleeding, thus avoiding future complications. After the bleeding has stopped, one must administer Bazhen Tang to conclude the treatment.

Ancients, when treating conditions during pregnancy, often combined Ren Shen (Ginseng) and Sha Ren (Amomum Fruit), taking advantage of one's tonifying nature and the other's regulating nature. This ensures robust Qi without the risk of miscarriage, and harmonious Qi without the worry of difficult labor. It is an excellent method.

Because women regard the Liver as their先天 (Primary Foundation). The Liver's nature is Yin, prone to condensation and depression. Depression leads to Qi stagnation, and consequently, Blood stagnation. Liver pathology inevitably affects the Spleen and Stomach (Earth element); therefore, secondary importance is placed on the Spleen and Stomach. This arises because Ying Qi (Nutritive Qi) has suffered massive depletion. Regardless of whether external pathogens are present, the primary approach must be to nourish the Blood. Various treatment methods such as moving blood stasis, resolving phlegm, descending fire, and expelling wind are all derived from the Blood aspect, and their variations remain rooted in the fundamental organ systems.