A Study on the Pattern of Epidemic Occurrences in Henan During the Qianlong,Jiaqing and Daoguang Periods of Qing Dynasty Based on Xiang-thinking and Three-year Epidemic Transformation Theory
HUANG Yuxuan
FAN Yipin
MA Yan
Abstract：Using historical data from Zhong Guo San Qian Nian Yi Zai Shi Liao Hui Bian and meteorological records,this study analyzes droughts/floods and epidemics in Henan during Qianlong-Jiaqing-Daoguang periods(1736-1850).Findings reveal alignment with the"Three-year epidemic transformation"(San Nian Hua Yi,三年化疫)Theory from Su Wen Yi Pian:abnormal climates from specific circuit and Qi patterns persisted 2-3 years before epidemics.Xiang-thinking elucidates intrinsic links between epidemics and Qi changes of heaven and earth,offering new perspectives for TCM epidemiology.
Keywords：Xiang-thinkingThree-year epidemic transformationEpidemics
Publication Date：2025-10-28
Online Publishing Date：2025-10-29(First online date of this platform, not the publication date of the document)
Pages：5( 1693-1697 )