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When Yang Qi in the upper part fails to interact and transform with Yin, it turns into Wind pathogen, causing Yin to subsequently transform into Phlegm-Saliva. Saponaria Fructus (Zaojia) utilizes Metal nature to overcome Wood (Wind), unblocking the airways and orifices. It searches out all Wind pathogens, thereby ensuring that Dampness is eliminated. Thus, for conditions such as Stroke (Zhongfeng) or Throat Bi (Houbi) caused by surging and obstructing Phlegm-Saliva, this herb is relied upon for its efficacy. When Yang Qi in the lower part fails to interact and transform with Yin, it turns into Wind, which then coerces Yin, generating Dryness. The aromatic quality of Saponaria Fructus floats upward, while its seed sinks relatively; therefore, the seed can dispel Wind in the lower body. Once Wind is removed, Yin can exert its moistening power, thereby relieving dryness and constipation of the Large Intestine. Generally, Wind-dispelling herbs are drying, but Saponaria Fructus is best when rich in oil. The kernel of the seed is sticky and tough; its ability to promote bowel movements also derives from its acrid and moistening properties.

Cheqiele (Terminalia chebula Retz., Hele) is bitter and warm, possessing opening properties, and sour and astringent, possessing consolidating properties. Its opening action resolves Phlegm-Saliva, reduces distension and fullness, expels retained food, and restores voice; its astringent action stops wheezing and halts diarrhea and dysentery. However, since its bitterness outweighs its sourness, although it astringes the intestines, it ultimately leaks Qi. Ancient formulas use this substance with great deliberation. Zhang Zhongjing’s Cheqiele San (Terminalia Chebula Powder) treats "Qi Li" (flatus with stool). "Qi Li" refers to the simultaneous loss of flatus and feces, indicating that Phlegm-Saliva must be obstructing the intestines. Terminalia chebula Retz. both astringes the intestines and resolves Phlegm-Saliva, making it highly suitable for this syndrome. Taking it mixed with rice gruel stabilizes the Middle Jiao Qi. Thus, the "draining" aspect of Terminalia chebula Retz. has merit without fault.

The Qianjin Cheqiele Wan (Million Gold Formula Terminalia Chebula Pill) treats Qi stagnation with fullness and obstruction, inability to eat, and wheezing. How can the condition reverse immediately? Terminalia chebula Retz. achieves dual treatment (opening and closing). For substances with dual actions, lacking a harmonious nature, honey-pilleting serves to harmonize them. This aligns perfectly with Zhang Zhongjing’s intent in using Terminalia chebula Retz. If used in Hezi Qingyin Tang (Terminalia Voice-Clearing Decoction) to treat aphasia due to Stroke, only its draining/opening property is utilized; combined with Licorice and Platycodon, it prevents excessive draining, allowing the voice to open. In Zhenren Yangzang Tang (True Person Nourishing the Viscera Decoction) treating chronic dysentery with rectal prolapse, only its astringent property is utilized; combined with Ginseng, Atractylodes, Angelica Sinensis, and Paeonia Lactiflora, it prevents mere astringency, stopping dysentery and retracting the prolapse. These are all matters of therapeutic balance that must be understood.

Sangbaipi (Morus Alba Root Bark, Sanggenbaipidan) is sweet and acrid, entering the Spleen and Lung meridians, and due to its cold nature, it also enters the Bladder meridian. It drives out Water-Qi from the Spleen and Lungs, excreting it via urination; thus, it treats edema, abdominal fullness, and skin swelling. Cough is suitable for treatment with this herb only when there is Water-Qi and latent Fire in the Lungs. If Lung Qi is deficient without Fire, and cough is caused by Wind-Cold, taking this herb will trap the pathogenic factors, leading to chronic cough. This is why Zhang Zhongjing specified "avoid if Wind-Cold" in Wangbuliuxing San (Vaccaria Seed Powder).