With his wisdom and erudition，Yan Yuan absorbed and inherited the realistic thought of scholars who emphasized profit rather than righteousness in Chinese history，and clearly realized the uselessness and helplessness of advocating righteousness over righteousness. At the same time，he had a profound understanding of social reality with his sober mind and keen insight. In the aspect of the relationship between righteousness and benefit，he is not only a master of the past dynasties thought of emphasizing profit but also a fighter of various ideological trends，such as criticizing emphasizing righteousness but neglecting profit and forgetting righteousness.