"Examination of Jade Cong" written by Zhao Yi, a historian in Qing Dynasty, pointed out that Zhao Gaoben, the son of Zhao, regretted that his country was destroyed by the Qin State (some people think that Zhao Gao entered Qin for revenge after the battle of Changping), and after entering the palace, he did not hesitate to destroy the corpse and entered Qin Gong, which triggered a series of struggles within the Qin Dynasty, killing all the royal families of the Qin Dynasty and destroying the Qin Dynasty. What Zhao Gao did was for revenge, and pointed out that this information came from Sima Zhen's Historical Records.
However, most people think that the above statement is not credible. Some people think that Zhao Gao is descended from the royal family of Qin, while others think that Zhao Gao is not a eunuch at all, but an official. Others think that Zhao Gao is a "first-rate calligrapher, linguist and legal expert". He is tall and strong, with superb riding and driving skills and extraordinary martial arts. He is a rare talent in the Qin court. "Deeply valued by Qin Shihuang.