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Weijing Decoction (Ecliptae Herba and Coix Seed Decoction), Qingxin Liangge San (Clear Heart and Cool Diaphragm Powder), Liangge San (Cool Diaphragm Powder), Xiebai San (Drain White Powder), Tingli Dazao Tang (Descurainia Seed and Jujube Decoction), Baihu Tang (White Tiger Decoction), Zhibao Dan (Precious Treasure Pill), Qingxin Niuhuang Wan (Clear Heart Calves' Horn Pill), Zhuye Shigao Tang (Bamboo Leaf and Gypsum Decoction), Yu's Qingzao Jiufei Tang (Mr. Yu's Dryness-Rescuing Lung-Decoction).

Summer is the season for heat diseases. However, before the Summer Solstice, the seasonal climate has not yet become intensely hot. The *Neijing* states: illnesses occurring before the Summer Solstice are termed "Wen" (Warmth), while those after are termed "Shu" (Summerheat). The nature of Wen pathogens was explained previously. The syndrome of Shu-Re (Summerheat-Fire) often confuses young physicians. Summerheat originates from the Yangming channel. Ancients used Baihu Tang (White Tiger Decoction) as the primary formula. Later, Liu Hejian proposed a theory that surpassed many others, asserting that warm-heat seasonal pathogens should be treated by targeting the Upper, Middle, and Lower Jiao, primarily using bitter, acrid, and cold herbs. If one rigidly adheres to Six-Channels differentiation, it remains the method for treating Cold Damage (Shanghan), leading to frequent misdiagnoses. Generally, Cold Damage results from external cold invasion, which must first be resolved through sweating, using acrid-warm herbs to disperse pathogens; this is correct. Cold inhaled through the mouth and nose constitutes an internal cold yin-pattern, requiring warming of the interior and treatment based on symptoms of the Three Yin channels. Regarding Summerheat diseases, specific formulas are few because predecessors discussed Summerheat briefly but detailed Cold Damage extensively. Examining ancient texts like the *Jingui Yaolue* regarding causes of Summerheat and tetanus, Zhang Jieg distinguished between heatstroke caused by exertion (Zhongshu) and heatstroke caused by rest (Zhongre), each having profound rationale, which will not be detailed here. Discussing pediatric cases where Summerheat mixes with other diseases, contemporary practices often rely on dispersing and digesting methods, adding just one herb of Xiangru (Moslae Herba) or administering Yiliu San (Six-to-One Powder). According to Materia Medica, Xiangru is acrid and warm, inducing sweating and draining retained water. In summer, when heat closes pores causing anhidrosis, thirst, and fluid retention, Xiangru must be combined with Xingren (Prunus Armeniaca Seed) because Xingren is bitter and descending, draining qi; Dashun San derives its principle from this. In late summer, dampness prevails, so Summerheat inevitably combines with Dampness. Summerheat damages Qi, and Dampness also damages Qi. Sweating consumes Qi and injures Yang, severely depleting stomach fluids, leading to numerous complications. During the season of outward expansion, the internal true Yuan becomes deficient. Zhang Fengkui stated: For Summerheat disease, initially use acrid-cool herbs, then sweet-cold herbs, followed by sour-draining and sour-astringent herbs; purgatives are unnecessary. This can be called concise and essential advice. However, in pediatrics, spreading Summerheat generates other diseases; here we outline the general principles.

In summer, exposure to heat causes coma resembling convulsions, termed Shu-Jue (Summerheat Syncope). This is caused by heat closing the orifices. The pathogen enters the collaterals, and the treatment method is the same as for Collateral Stroke. Fang aromatic orifice-opening pills such as Niuhuang Wan (Calves' Horn Pill) and Zhibao Dan (Precious Treasure Pill) can be effective. After consciousness returns, use blood-cooling herbs such as Lianqiao Xin (Forsythia Fruit Stamen), Zhuye Xin (Bamboo Leaf Stamen), Xuanshen (Scrophulariae Radix), Xi Shengdi (Prepared Rehmanniae Radix), Xian Shengdi (Fresh Rehmanniae Radix), and Er Dong (Tian Dong and Mai Dong). At the onset, wind-dispersing herbs (acrid-warm exterior-resolving agents) are strictly contraindicated. Initially, Summerheat damages Qi; Zhuye Shigao Tang (Bamboo Leaf and Gypsum Decoction) or mild lung-clearing agents may be used. Generally, deep heat leads to deep cold extremities (cold reversal). If the face is dirty, teeth are dry, urination and defecation are obstructed, or diarrhea is unsatisfactory, it confirms the diagnosis. It is strictly forbidden to misdiagnose this as Cold Damage (Shanghan).