When he was at service, he lacked experience in strategy, was stingy in economy and was radical in politics.Although he was impeached greatly, Zeng Guofan defended him many times.

• 在山东巡抚任上，他因在军事方面缺乏经验，经济方面有些吝啬，政治方面过于偏激，受到严苛的弹劾，两江总督曾国藩又多次为他辩护。