On Guo Qin is the representative work of Jia Yi's political theory, which is divided into three parts. The full text analyzes the faults of the Qin Dynasty from various aspects, hence the name "On Qin".

This paper aims to summarize the historical lessons of Qin's sudden death and provide reference for the establishment of the system and the consolidation of the rule in the Han Dynasty. It is a group of articles with profound insights and great artistic appeal.

Jia Yi's rich imagination is also manifested in exaggerated techniques from time to time, with obvious writing style of strategists in the Warring States period, such as the effect of "all ministers are built", even the fetus or the dead emperor can keep peace.

The policy of public security is ambitious, which stems from Jia Yi's strong and honest character. Seeing the text, the image is far and wide. With all vitality and lifelong talent as the text, the lines are full of affection. Love words are sincere, honest, worried and angry, full of youthful heroism. Although he was a literary emperor, he was outspoken and did not disgrace his mission, showing a strong appeal, which clearly reflected the positive attitude towards life and high-spirited spirit of intellectuals during the establishment of the unified feudal empire in the early Han Dynasty.