In his own words, why did Emperor Guangwu conclude that Dong Xuan was an upright official?

Dong Xuan, Shao Ping, was born in Chenliu County of Han Dynasty. He successively served as minister of Beihai County, prefect of Jiangxia County and magistrate of Luoyang County. Dong Xuan is an honest and upright official, who has strictly enforced the law all his life. Because he is not afraid of powerful people, he is called "Crouching Tiger, Hidden Dragon".

During the reign of Emperor Guangwu of the Eastern Han Dynasty, Dong Xuan was appointed as Beihai Xiang, and Gongsun Dan, the leader of the imperial clan, was appointed as the county military attache. Unexpectedly, this GongSunDan is really arrogant. Once, he built himself a new mansion and invited Mr. Shugua to see Feng Shui. The invited Mr. Feng Shui said that this place is not good and I am afraid there will be disaster. If you want to keep safe, you must use a person as a souvenir.

Gong was taken aback. So, before he started work, in order to make a fortune, he asked his son to bury a passerby under the foundation. I didn't expect it to reach my ears somehow, so I ordered Gong and his son to be arrested immediately and made public.

Who knows, Gong's cronies are used to behaving badly on weekdays, and they simply refuse to accept it. More than 30 people collectively demonstrated to Dong Xuan.

Dong Xuan was furious, arrested them together, and obeyed public opinion and hacked them all to death. Therefore, Dong Xuan offended his immediate boss Qingzhou satrap, who wrote to behead Dong Xuan. Fortunately, the special envoy of Emperor Guangwu came to save Dong Xuan.