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The *Zhu Bing Yuan Hou Lun* (Treatise on the Pathogenesis and Manifestations of All Diseases) records: After the Beginning of Spring, if there is no sudden severe cold or ice/snow, yet people suffer from high fever, this belongs to the spring yang qi activating during winter; latent cold transforms into warm disease (Wenbing). From after the Spring Equinox until before the Autumn Equinox, sudden cold weather constitutes seasonal epidemic cold plague (Shixing Hanyi). In March and April, sudden cold may occur; at this time, yang qi is still weak, suppressed by cold, so the heat manifestation in illness is mild. In May and June, yang qi is already abundant; suppressed by cold, the heat manifestation in illness is heavy. In July and August, yang qi is declining; suppressed by cold, the heat manifestation is also slight. These illnesses resemble warm disease (Wenbing) and summerheat disease (Shubing), but their treatments differ. The initial treatment involves using massage ointment and moxibustion/fire application. For only two days, needle therapy is employed using Cui Wenxing’s dispersing method; recovery occurs with sweating. If unresolved, induce sweating again on the third day. If resolved with profuse sweating, do not induce sweating again. On the fourth day, administer Lili Wan (Veratrum Pill); resolution occurs via mild emesis. If the condition is stubborn and Lili Wan fails to induce vomiting, administer Chixiaodou Guiti San (Adzuki Bean and Melon Peduncle Powder) for emesis. If resolved, observe if the illness is not fully cleared; apply needle therapy once more to resolve it. If still unresolved, on the sixth day when heat has entered the stomach, administer a purgative downed with egg soup for resolution. There is no case that does not meet expectations, provided one carefully observes the solar terms and disease progression. Regarding indigestion, the symptoms resemble seasonal epidemic cold plague, presenting with fever and headache; this is food retention disease (Shibing) and should be rapidly purged. Seasonal epidemic diseases should wait six to seven days. At the onset of seasonal epidemic disease, on the first day it is in the skin, second day in the superficial layers, third day in the muscles, fourth day in the chest, fifth day enters the stomach; only upon entering the stomach can purgation be applied. If purgation is used while heat is outside the stomach, heat enters the stomach vacuously; however, purgation must eventually be repeated. Failure to purge often leads to gastric ulceration and macular eruption. Mild cases present with red macules (five deaths, one life); severe cases present with black macules (ten deaths, one life). This variation depends on the doubling difference in human constitution strength. If patients are not purged in time as days pass, heat cannot vent, leading to gastric ulceration and macular eruption. If the patient has no fever but exhibits delirium, restlessness, and mental/spiritual disconnection where speech does not correspond appropriately, the treatment follows the pattern of Wuling San (Five-Ingredient Poria Pill). (This describes Niao Shi’s methods for treating seasonal epidemic cold plague. Warm disease and summerheat disease are similar but treated differently. Warm disease does not use massage ointment or fire application; additionally, there are winter warmth, pox/measles, four-season zang-fu yin-yang toxins, and five types of heat diseases after Summer Solstice. Given the intense summer heat, medications are slightly cooling, hence the differing treatments.)