Answer:
As a statesman, Yi's account of the fall of the Qin would be more detailed and accurate because he worked in the government.
It would also have more potential to ignore the bad aspects of the Qin government because he would not want to harm his own institution.
Step-by-step explanation:
Because Yi worked in the government, he would know more about how it was run and would have direct experience with the Qin government. So, compared to other people not in the government, Yi's account would be more accurate from a primary perspective.
He would also be more likely to only talk about the good things in the Qin government because he wouldn't want to denounce the people and government he worked for.