When the Qian-Jia School paradigm for study of the Classics formally turned towards Han Learning, Hui Dong was the key figure. His series of studies of the studies on the ”Yi” (易), including reconstructions, philology, phonology, led to his composition of new subcommentaries based on Han scholars' study of original meanings. The earliest of these, the ”Zhouyi Benyi Bianzheng” (周易本義辨證), was especially directed at questionable aspects of Zhu Xi's ”Yijing Ben Yi”, supported by additional references to put forth the idea of a return to antiquity to further the Han Learning movement. This attack on the established position of Song learning began a new direction in studies of the Yi. Subsequently, his ”Yi Hanxue” (易漢學) and ”Zhouyi Shu” (周易述) re-established the primacy of the Han Learning scholarship during the Qing.