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Yin-Yang Exchange (Yin Yang Yi), also known as post-coital relapse due to female labor (Nü Lao Fu). The symptoms include pain radiating to the genitalia and a sensation of heat rushing upward. The commonly used formula is Shao Kun San (Ash from Underwear Powder), but it should be noted that Shu Shi Tang (Rat Feces Decoction) can also be effective.

When a man has just recovered from an illness and engages in sexual intercourse with a woman, it is called Yang Exchange (Yang Yi); when a woman has just recovered and engages in sexual intercourse with a man, it is called Yin Exchange (Yin Yi). Upon careful examination, this is essentially Nü Lao Fu (post-coital relapse due to female labor). Some argue that after a man recovers, intercourse causes the woman to become ill, and after a woman recovers, intercourse causes the man to become ill. This reasoning is untenable, and such cases have never been recorded in ancient or modern times. The pulse deviates from the normal channel pattern. The manifestations include heavy body, shortness of breath, urgency and tightness in the lower abdomen, possibly radiating to the genitalia with spasms, heat rushing up to the chest, heaviness in the head making one reluctant to lift it, visual disturbances (seeing spots), and stiffness/spasms in the knees and calves. Ancient formulas generally use Shao Kun San: take the part of a woman's underwear near the genitals, boil it, burn it to ash, mix with water, and administer one Fang Cun Bi (a measure equivalent to a square inch spoonful) per dose, three times daily. For women suffering from this, a man's underwear is used; alternatively, Shu Shi Tang (Rat Feces Decoction) may be used. These are all formulas for treating Nü Lao Fu (post-coital relapse due to female labor).

In Yang Ming disease, hiccups (Ke Ni) arise with sensations of cold and heat, caused by fluid retention and phlegm obstructing the reversal of Qi flow. Ban Xia (Pinelliae Rhizoma) and Sheng Jiang (Zingiberis Rhizoma Recens) can both treat this condition; Ju Pi (Citri Reticulatae Pericarpium) and Shi Di (Diospyri Fructus Calyx) are always capable of calming it.

Ke Ni (Hiccups) refers to the upward reversal of Qi resulting in hiccuping sounds. Zhang Zhongjing referred to this condition as Ke Ni. Do not mistake it for Ke (Cough); Ke refers to Sao (phlegmatic cough). Also do not mistake it for Yue (retching/vomiting sound); Yue refers to Ou (vomiting). Following common usage, calling it E Ni (Hiccups) is correct. In general, hiccups caused by Shang Han (Cold Damage) can be categorized: those due to Stomach Heat are primarily treated with Ju Pi Zhu Ru Tang (Tangerine Peel and Bamboo Shave Decoction); those due to Stomach Cold are primarily treated with Ding Xiang Shi Di Tang (Clove and Persimmon Calyx Decoction); those due to fluid retention and phlegm are primarily treated with Ban Xia Sheng Jiang Tang (Pinellia and Fresh Ginger Decoction). Generally, hiccups originating in the Middle Jiao are due to the failure of Grain Qi to circulate; the sound is short and small, triggered by eating. Hiccups originating in the Lower Jiao are due to insufficiency of True Qi; the sound is long and loud, occurring even without eating. If hiccups persist, Ju Pi Zhu Ru Tang can be used to treat vomiting and hiccups. This formula consists of Ren Shen (Ginseng Radix et Rhizoma), Gan Cao (Glycyrrhizae Radix et Rhizoma), Ban Xia (Pinelliae Rhizoma), Pi Pa Ye (Loquat Leaf), and Mai Dong (Ophiopogonis Radix), added with Chi Fu Ling (Poria with Red Core), Sheng Jiang (Zingiberis Rhizoma Recens), and Da Zao (Jujubae Fructus), decocted together. Ding Xiang Shi Di Tang contains Ren Shen (Ginseng Radix et Rhizoma), Sheng Jiang (Zingiberis Rhizoma Recens), and is indicated for hiccups where Cold damages Middle Qi. Ji Sheng Xiang Di San (Aucklandia and Persimmon Calyx Powder) from *Ji Sheng Fang* contains only two ingredients, but adding Ju Pi (Citri Reticulatae Pericarpium) and Zhu Ru (Bambusae Caulis in Taenia) is also beneficial.

Palpitations (Xin Ji) in the Three Yang syndromes are detailed in their respective contexts. If caused by fluid retention, Ling Gan Xiao Chai Tang (Poria and Licorice or Minor Bupleurum Decoction) may be used. If accompanied by dizziness/vertigo (Mao Xuan) and dry retching, Zhen Wu Tang (True Warrior Decoction) is appropriate; alternatively, Xiao Jian Zhong Tang (Minor Construct the Middle Decoction) or Zhi Gan Cao Tang (Honey-Fried Licorice Decoction) may be used.

Ji (Palpitation) refers to the palpable beating of the heart, feeling restless and uneasy. In general, palpitations caused by Shang Han (Cold Damage) can be categorized: those due to Water Retention in the Heart area from Tai Yang syndrome, accompanied by cold extremities and palpitations, are caused by Fire pathogenic factors affecting the Heart, hence palpitations. The classic text states to first treat the Water, then treat the Cold Extremities; Ling Gan Tang (Poria and Licorice Decoction) is indicated. Those due to excessive sweating in Tai Yang syndrome, leading to dizziness/vertigo and palpitations, should be treated with Gui Zhi Gan Cao Tang (Cinnamon Twig and Licorice Decoction). Those due to excessive sweating leading to Heart Palpitations should be treated with Zhen Wu Tang (True Warrior Decoction). Those due to high fever and alternating chills/heat in Yang Ming syndrome leading to palpitations should be treated with Xiao Chai Hu Tang (Minor Bupleurum Decoction). Those due to sweating in Sha Yang syndrome, leading to delirious speech and palpitations, should also be treated with Xiao Chai Hu Tang (Minor Bupleurum Decoction). Those who experience palpitations and irritability on the third or fourth day of Shang Han (Cold Damage) suffer from Yang Qi deficiency; Xiao Jian Zhong Tang (Minor Construct the Middle Decoction) is indicated. Those with a knotted or intermittent pulse and Heart Palpitations due to Shang Han (Cold Damage) should be treated with Zhi Gan Cao Tang (Honey-Fried Licorice Decoction).

Xiao Jian Zhong Tang (Minor Construct the Middle Decoction) uses a large amount of Shao Yao (Paeoniae Radix Alba), harmonized with Gui Zhi (Cinnamomi Ramulus), Sheng Jiang (Zingiberis Rhizoma Recens), Gan Cao (Glycyrrhizae Radix et Rhizoma), and Da Zao (Jujubae Fructus), plus Yi Tang (Maltose) to tonify the Middle Jiao and viscera; it is unparalleled in efficacy for treating deficiency-cold abdominal pain. Zhi Gan Cao Tang (Honey-Fried Licorice Decoction) contains Ren Shen (Ginseng Radix et Rhizoma), Sheng Jiang (Zingiberis Rhizoma Recens), Gui Zhi (Cinnamomi Ramulus), Mai Dong (Ophiopogonis Radix), Sheng Di Huang (Rehmanniae Radix), Huo Ma Ren (Cannabis Semen), Da Zao (Jujubae Fructus), and E Jiao (Colla Corii Asini), decocted with wine; it is miraculous in efficacy for treating deficiency-wasting Lung萎 (Fei Wei).