What is the reason why Confucius praised Dong Hu as a good historian of ancient times and Zhao Dun as a good doctor of ancient times?

1 Confucius praised Dong Hu greatly and called Dong Hu a "good history of ancient times" whose "calligraphy is not hidden". Later generations accordingly called him "good fox" to express his praise. This is because during the Spring and Autumn Period when etiquette collapsed and music collapsed, the powerful ministers controlled the country and had the power of life and death. The calligraphy principle that violated etiquette and justice has long lost its majesty. Not everyone who adheres to this principle is praised. And it often leads to death. The Taishi of the State of Qi wrote about the crime of "regicide" against the powerful minister Cui Shu, and as a result, two brothers were killed one after another. Dong Hu's straight writing naturally took risks. Therefore, Confucius praised him and later generations praised him in recognition of his upright spirit of adhering to principles. This spirit has been unremittingly inherited by later generations of upright historians, and has become the most noble moral sentiment in our country's historical ethics tradition.

2 Prime Minister Zhao Dun repeatedly remonstrated with Jin Linggong’s misbehavior, but Jin Linggong not only refused to listen, but wanted to kill Zhao Dun. Under this situation, Zhao Dun had no choice but to flee the capital and seek refuge elsewhere. He did what a minister should do. Later, I learned that Dong Hu's book history was not good for me, so I just defended myself. However, I did not kill Dong Hu after being rejected. I just said that it was because of my own nostalgia that it brought me sorrow. In the end, there was no interference in the writing of history. Confucius believed that he was only bound by etiquette and law and did not escape from Jin, which resulted in such a regrettable outcome. So I think he is Dr. Gu Zhiliang