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Miao Zhongchun treated the second son of Gao Cunzhi. When the child was young, he suffered from fever for ten days and nights during summer, having only consumed Baihu Tang (White Tiger Decoction). Other physicians attempted diaphoresis (sweating method) without success, and then used Maren Wan (Hemp Seed Pill) to purge, yet the heat remained unchanged. Miao diagnosed: "This is injury by summerheat. Baihu Tang is its primary formula. Due to erroneous sweating and purging, the deficiency is severe. Add three qian of Renshen (Ginseng Radix et Rhizoma), administer one dose; slight sweating will occur, followed by a Mingxuan reaction (a transient adverse reaction after taking medicine), and shortly thereafter the heat will resolve. Then prescribe another formula to prevent malaria and dysentery, using two qian of Renshen combined with herbs that invigorate the spleen, clear summerheat, and guide out stagnation. Soon, malaria appeared; upon drinking according to the prescription, the malaria ceased, but dysentery arose. Out of desperation, Cunzhi administered Shengmai San (Generate the Pulse Powder) mixed with Yiyuan San (Benefit Origin Powder) to the child. The child became extremely emaciated, and the dysentery slightly decreased. Several days later, Miao returned and explained the situation. He said: "I have understood the application of Shengmai San and Yiyuan San." Without palpating the pulse, he carefully observed the child and asked, "Does food taste sweet?" The answer was, "Sweet." Miao said: "The disease has gone." Cunzhi asked for the reason. Miao replied: "Observing the child's bright eyes and his perception of sweetness in food indicates that the spirit is vigorous and the stomach qi has recovered." Indeed, the child soon recovered completely.

Zang Yuhan's son was half a year old, suffering from coughing in midsummer. After seven days, due to bathing and being startled, as well as food retention, he developed high fever and exhaustion. For three days, no medicine was given, resulting in corneal opacity, cracked lips, and dry tongue. Miao said: "This is a summerheat disease. One should administer Baihu Tang." The family asked: "There is diarrhea; would Shigao (Gypsum Fibrosum) be harmful?" Miao said: "First, probe with Tianshui San (Heavenly Water Powder)." After administering two qian, shortly afterward, the medicine was vomited out mixed with phlegm, accompanied by slight sweating and cooling of the body. At dusk, the fever recurred; another two qian of Tianshui San were given, but it was ineffective. Miao said: "It is undoubtedly a summerheat syndrome. One should use Baihu Tang plus Renshen. However, since the child suffers from lung heat, we pause for now." Upon re-examination, Miao said: "Summerheat pathogen resides in the skin and muscles, presenting heat without chills; this is Dan Nue (Cachectic Malaria). It must be treated with Baihu Tang." Two doses were taken consecutively without effect; the condition worsened to open nostrils, staring eyes, and inability to accept breath into the mouth, indicating critical danger. Miao said: "In this syndrome, qi deficiency prevents overcoming the pathogen." The *Ling Shu·Ci Nue Lun* states: "For all malarial fevers, treatment should begin about the time of one meal before the onset; if missed, the opportunity is lost." It also states: "Do not needle those with intense heat, do not needle those with chaotic pulses, do not needle those with profuse sweating." I suspect the timing of medication was incorrect. Therefore, combine the previous prescriptions into one decoction, leave it exposed overnight, and administer warm at cockcrow. The illness instantly vanished. No further tonification was needed; the spirit gradually recovered. This demonstrates the importance of observing the disease's qi and the timeliness of medication.

Jiang Qianguan's fifth son was one year old, suffering from summerheat-induced fever. After taking this medicine (Jingfeng Tie - Convulsion Patch) for over ten days, he experienced convulsions and危殆 (critical danger). Subsequently, La Wan (Wax Pill) and other medicines were administered, leading to death. I investigated and found the error lay in poisoning from the medicine. Treating him with modified Bupi Tang (Spleen-Invigorating Decoction), he recovered immediately. (From *Ci You Pian*.)