Why is Li Ao's evaluation of nan huaijin so bad?

Don't you know that scholars despise each other since ancient times? How much does Li Ao know about nan huaijin? ! It's ridiculous that a crazy Li dares to comment on Nan with his little knowledge. Nan huaijin was self-disciplined all his life, and he talked about the unity of knowledge and practice. Li Ao is a wonderful flower, who likes to show off and make news. Knowledge and cultivation are two different things. Li Ao is a writer at best.