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The content is quite extensive, with each medicinal herb accompanied by a seven-character regulated verse (Qilu), totaling five hundred and thirty-four poems. The first poem, "Poem on Ginseng," states: "Five leaves and three forks, uniquely fresh; Huangshen from Shangdang has the purest taste. Scattered like the star Yaoguang, a treasure from the sky's edge; Refined within the human body, a gem formed at the earth's bottom. It opens the stomach and assists the spleen to tonify Qi; Calms the heart and moistens the lungs to naturally soothe the spirit. Original Yang can summon the return of spring; One must discern true deficiency and excess." Commentary notes: Although the efficacy of Ginseng (Renshen, 人参) is indeed great, the harm caused by its misuse is not trivial; the intent behind the last line is profound.

Yuan Mei (courtesy name Suiyuan) wrote the "Biography of Mr. Xu Lingtai," which records the treatment of Zhe Gengshi's illness, but the account was not very clear upon reading. Recently, after consulting the *Huixi Medical Cases* (*Huixi Yian*), the matter became clear as if released from confusion. The medical case records: Zhe Gengshi from Luxu suffered from a severe heatstroke syndrome. His pulse was faint and nearly imperceptible; he experienced urinary incontinence, delirious speech, and unconsciously groped for clothes on the bed. This is a syndrome of Yang floating outward (Yang Yue Zheng), where profuse sweating leading to collapse is imminent. He was immediately given a decoction of Ginseng (Renshen, 人参) and Aconite Root (Fuzi, 附子) mixed with child's urine. He slightly revived but could not recognize people. I had business in the commandery city and instructed his family: "If he wakes up and can speak, come fetch me." Three days later, they came to invite me. I hurried there and found him alive. The physician claimed the previous medicine was effective and continued using the same prescription. Before it was drunk, I arrived and said: "Yang has returned, but Fire has flared up again, and Yin fluids are about to be exhausted. If Aconite Root (Fuzi, 附ate) enters the throat, it will be dangerous." I ordered that watermelon be fed to the patient. The patient was greatly delighted, eating several melons over consecutive days, followed by a formula to clear summerheat and nourish the stomach, resulting in recovery. Later, he thanked me and recounted what he saw while unconscious: a black figure stood before him, wanting to eat him, causing bone-chilling cold. A child drove it away with a fan, saying, "Are you not afraid of thunderbolts?" The Black Spirit replied, "Endure three thunderbolts, what can you do to me?" The child said, "How about adding ten more watermelons?" The Black Spirit retreated in fear. I said: Aconite Root (Fuzi, 附子) was anciently named "Thunderbolt Powder" (Pili San). Had he taken three doses without watermelon, the latent summerheat would not have dissipated. His words were well-founded; it is indeed a strange event.

The acupoint located below the nose and above the mouth is called Shuigou (Water Ditch), also known as Renzhong (Human Middle). There are two explanations for its name: One theory states that from this point upward, the eyes, ears, and nose are paired orifices; downward, the mouth and the two excretions are single orifices. The upper three lines represent Yin, and the lower three lines represent Yang, combining to form the hexagram Tai (Peace). Another theory posits that Heaven's Qi connects through the nose, and Earth's Qi connects through the mouth. Heaven nourishes humans with Five Qi, received via the nose; Earth nourishes humans with Five Flavors, received via the mouth. The acupoint resides in the middle, hence the name Renzhong (Human Middle). This is seen in Cheng Yunlai's *Medical Idle Talk* (*Yi Xia Zhi Yan*).

It is sometimes said that the Bladder (Pangguang, 膀胱) has an upper opening but no lower one, or vice versa. Zhang Jingyue and Li Shicai also supported this view, and people generally believed it, unaware that it was incorrect. Without upper and lower openings, how could the condition of Jiaochang (Intestinal Cross-Connection) occur? Shen Shifu Guozhi from Wu County alone argued that both openings exist, but the upper opening is usually closed. Water entering the Bladder (Pangguang, 膀胱) still permeates through the Sanjiao (Triple Burner) transformation, rather than entering directly from the upper opening. If the Qi of the Fu organs is severely deficient, lack of strength causes the orifice to fail to close; or if pathogenic heat damages the Fu organ, promoting open discharge, the orifice also fails to close. In extreme cases, Jiaochang occurs, where feces enter the upper opening of the Bladder (Pangguang, 膀胱) from the lower opening of the Small Intestine and exit with urine. Just as external orifices of the body, such as the umbilicus, ears, and breasts, are usually closed but open to discharge pus/blood or milk when diseased, the upper opening of the Bladder (Pangguang, 膀胱) can be inferred similarly. This argument is the most plausible. My commentary: Tang Yu Zheng treated Governor Wu for urinary retention. When lying down, urination was slightly possible; when standing, not a drop could pass. Upon inquiry, it was learned that he frequently consumed Black Tin Pill (Heixi Dan). Thus, it was realized that during pill preparation, Lead did not fully transform, while Sulfur volatilized. Lead sand entered the Bladder (Pangguang, 膀胱). When lying down, weight distribution allowed some urination; when standing, it blocked the waterway centrally, preventing flow. He was instructed to take three hundred grains of Golden Liquid Pill (Jinye Dan), divided into ten doses, administered with a decoction of Knotweed Herb (Qumai, 瞿麦). The Bladder (Pangguang, 膀胱) received Sulfur, converting accumulated Lead into ash, which discharged through the urinary tract like fine sand. The disease was cured. This case further proves that the Bladder (Pangguang, 膀胱) has both upper and lower openings.