The two historical periods are essentially dynasty alternation and regime alternation. Counting the ancient history of China, many dynasties were established in the early stage of prosperity, and then declined. The eunuch of consorts was dictatorial, and the emperor had no intention of governing the country and oppressed the people, which made the peasants at the bottom rebel. The famous event was Guangwu Uprising, Chen Sheng.

However, the uprising ended in failure. It is also mentioned in Qin Lun that Chen She, the son of Weng Xuansuo Shu, is not as good as a middleman. This is not the sage of Zhong Ni and Mo Zhai, but the wealth of Tao Zhu. Qin theory also summed up the failure of the uprising, but the failure did not affect history.

In view of the problem of how to correctly understand the two historical periods, I think it is necessary to have a certain understanding of history and objectively evaluate the disadvantages and advantages brought by a dynasty. In the final analysis, the sacred Guangwu uprising was due to the tyranny of the Qin Dynasty. After overthrowing the Qin Dynasty, the Han Dynasty was established. After Wenjing's rule, Emperor Wu crusaded against Xiongnu, which brought people a life of living and working in peace and contentment. It was also a commendable dynasty. Therefore, we should have a ruler in our hearts and look at history objectively. I also have a map of historical changes, hoping to solve your doubts.