4 volumes, with an additional volume of text. Written by Dai Tian-zhang (Linjiao) of the Qing Dynasty, it was completed around the 61st year of the Kangxi reign (1722). Volume 1 discusses the differences in the differentiation of cold-damage disease and pestilence, using five aspects?qi, color, tongue, spirit, and pulse?as the main framework for distinguishing between the two. It then describes pestilence combined with wind, cold, summerheat, malaria, dysentery, and other multiple concurrent and associated syndromes. Volumes 2 and 3 analyze the external syndromes of pestilence, with Dai emphasizing five main treatment methods: sweating, purging, clearing, harmonizing, and tonifying. The book provides a more detailed and comprehensive discussion of the pathogenesis of warm epidemic disease and its associated syndromes compared to the "Wenyi Lun," and its treatment methods are also more substantial and valuable. The existing editions include a 1778 Qianlong edition and nearly 30 other printed versions.