The Essence of the 'Great Treatise A': A Philosophical Inquiry into the Gentleman's Establishment of Life and the Order of the *Yi*
This article deeply interprets the core proposition from the 'Great Treatise A'—'That which the gentleman dwells in and finds peace is the order of the *Yi*.' It examines how the gentleman, by internalizing the Way of Heaven and Earth and utilizing the *Book of Changes* as the foundation for establishing his life, achieves a state of 'auspiciousness without detriment' through observing the images and contemplating the textual explanations, situated within the Pre-Qin context and the Confucian tradition.

IV. Legalism and the Yi
Although the Han Feizi is classified as Legalist, its thought also incorporates the application and elucidation of Yi principles.
The Han Feizi, Jie Lao (解老) provides detailed annotations on the Laozi, and although it does not directly discuss the Yi, its dialectical thinking is deeply rooted in the logic of Yin-Yang transformation found in the Yi.
The Han Feizi, Shuo Lin (说林) records numerous historical stories and parables, many of which reflect core Yi ideas such as "extremes reverse" and "guiding by taking advantage of the situation."