Cang expounded the principle of "seeking fame should seek fame"
That is, if a person wants to stay in history, it depends on character rather than power.
Broad-minded and free-spirited, he did not forget to dominate himself after being demoted, resolved his worries and jumped out of the sinister officialdom. "If you give up and gain territory, you will be content to rush and not follow the crowd. Therefore, your recovery depends on internal and external losses, you will gain something, and you will laugh forever. " This is a good expression of his ideas. Later, Su Shi's poems such as Fu on the Red Wall and Niannujiao also incorporated this idea.