It is easy to unify the country, but difficult to unite people. Qin Huang and Han Wu are deep in understanding samadhi. Qin Shihuang "burned books to bury Confucianism" and Wu Di "respected Confucianism alone".

Before Dou Taihou's death, Emperor Wu kept his position secret and set up a doctor of the Five Classics to lay the foundation for respecting Confucianism. At the beginning of Emperor Wu's accession to the throne, he couldn't wait, and the whole country recommended virtuous and upright people to speak out. Dong Zhongshu, a lonely scholar, stands out with his three strategies of heaven and man. Since then, Confucianism, which was originally handed down by folk families, has been designated as the official thought, which is closely related to politics and imperial power.

On this basis, Emperor Wu of the Han Dynasty established imperial academy and after having obtained the provincial examination, established the system of recommending talents, and formed a unique civil service system in China. In the era of Emperor Wu of the Han Dynasty, it was gradually changed to a check-in system, which fundamentally solved the shortage of talents of Han people.