In the Chapters"On the Five Elements"in the History of the Han Dynasty,the History of the Later Han Dynasty,and the History of the Jin Dynasty,the content under the entries of clothing omens shows significant differences.The History of the Han Dynasty mainly relate to major political events,where key figures'political careers were affected and ultimately failed due to incorrect or inappropriate attire.The History of the Later Han Dynasty displays new phenomena,reflecting changes in clothing and makeup,with new elements not seen in traditional attire,such as the popularity of wooden clogs and the appearance of exotic and peculiar clothing.The History of the Jin Dynasty conveys that the clothing of the time was not only diverse but also exhibited a trend towards novelty,beauty,and a pursuit of relaxed and free personal styles.These new changes reflect social transformations in ideology and cultural psychology,indicating the gradual decline of the Confucian classics that once dominated during the Han dynasty,and the formation of a new conceptual system.The narratives of clothing omens in the Chapters"On the Five Elements"in the three offical history from the Han to Jin dynasties show that,as a tool for maintaining social order,clothing omens were essentially aimed at criticizing heterogeneous clothing in society but objectively became a barometer of social customs changes.