Huanglian and Colla Corii Asini Soup is mainly used to nourish yin and reduce fire (nourishing yin essence and lowering fire), and remove vexation and tranquilize the mind (relieving vexation and stabilizing the mind). Huanglian and Colla Corii Asini Soup is composed of Huanglian, Colla Corii Asini, Paeoniae Alba, Scutellaria Baicalensis, etc. The combination of these herbs can nourish the yin of the liver and kidneys, and astringently lower the fire in the heart, so that the heart and kidneys can communicate with each other, and the fire does not disturb the god, so as to achieve the effect of tranquillizing the god. Huang Lian can clear heat and dry dampness (removing heat and drying dampness), clearing and lowering heart fire; Colla Corii Asini can nourish yin and replenish blood (nourishing the blood in the body), and when combined with Huang Lian, it can nourish yin in the kidneys, lowering the heart fire and communicating with the heart and kidneys (the fire of the heart descends and the water of the kidneys rises, which is a mutual restriction); Paeonia Lactiflora has acidic sweetness and nourishes yin, nourishing blood and softening the liver (replenishing the blood and softening the liver). Huanglian Ajiao Pill is mainly used for Yin deficiency and fire exuberance (deficiency of Yin and essence in the body, resulting in hyperactive fire), heart and kidney disorders (heart fire, kidney yin deficiency, dysfunction of the physiological functions of the heart and kidneys), which manifests itself in symptoms such as heartburn and insomnia, inability to lie down, and dryness of the mouth and throat, and can be used with additive treatment for dysentery and pus and blood (diarrhea, with pus and blood in feces), etc. The specific use should be in accordance with the instructions of the medicine. Specific medication should be taken in accordance with the doctor’s instructions, and should not be used without authorization to avoid adverse consequences.