On Mr. YANG Xiang-kui's achievements on the Yi learning

The studies of the Yi learning occupy an important position in Mr. YANG Xiang-kui's profound and extensive academic system. Mr. YANG had explored and achieved in all the following research fields such as the origin and quality of Zhouyi, the position and influences of Zhouyi and the Yi learning in the Chinese ideological cultural history, the development of Chinese Yi studies, and so on. Mr. YANG studied the Yi learning in all domains from different perspectives. He not only had made a concrete and complete exploration to, textual research on and interpretation of the Yi learning text as well as materials related, but also paid attention to a macro-understanding and total seizing of the history of the Yi learning and issues related. Not rigidly adhering to the traditional division of the Yi learning into the school of image-number and that of philosophical connotations, but fusing them into one and making a transcendence over either, Mr. YANG would put the Yi learning in a magnificent i-deological cultural background and evolution to make a systematical observation, and based the Yi learning studies upon the studies of cultural and social history to reveal the traces and rules for the Yi studies development better.