1, Han Dynasty (202-220 BC) is a unified dynasty after Qin Dynasty, which is divided into Western Han Dynasty (also known as pre-Han Dynasty, 202 BC1February-BC1October 8) and Eastern Han Dynasty (also known as post-Han Dynasty, June 25, 220 AD) Later historians did not recognize the legitimacy of the New Dynasty and the Xuanhan Dynasty, so they generally incorporated them into the history of the Han Dynasty. In 22 1 year, Liu Bei (Emperor Zhaolie of the Han Dynasty), who considered himself a descendant of the Han Dynasty, proclaimed himself emperor in Chengdu. His country name was Han, and he was called Shu or (22 1, 15-263) in history, which was one of the Three Kingdoms. Two emperors, 43 years. History is not included in the history of the Han Dynasty.

2. The world was in chaos at the end of Qin Dynasty. After Liu Bang overthrew the Qin Dynasty, he was named Hanwang. In 202 BC, after the victory of the Chu-Han War, he proclaimed himself emperor and established the Han Dynasty. Emperor Wen of Han and Emperor Jing of Han carried out the national recuperation policy and founded "cultural landscape governance"; After Emperor Wu of the Han Dynasty ascended the throne, he expanded his territory, reformed and innovated, and was called "the prosperous time of Hanwu" by modern people. In the Han dynasty, the national strength reached its peak, which was called "filial piety and rejuvenation" in history. In 8 AD, Wang Mang usurped the Han Dynasty, the Western Han Dynasty perished, and an uprising broke out soon.

In AD 25, Liu Xiu proclaimed himself emperor and established the Eastern Han Dynasty, with Luoyang as its capital. After unifying the world, retiring to support the people is called "Guangxu Zhongxing" in history. Emperor Hanming followed the frivolous and thin fu, and created the "rule of Zhang Ming"; After the Han and Emperor succeeded to the throne, they broke the northern Xiongnu and recovered the western regions, creating an "eternal prosperity", and the national strength of the Eastern Han Dynasty reached its peak. The Yellow Scarf Uprising broke out in A.D. 184, which quelled civil strife but led to local self-respect. After Dong Zhuo's rebellion, the Eastern Han Dynasty existed in name only. In 220 AD, Cao Pi usurped the Han Dynasty and the Eastern Han Dynasty perished. Later, Liu Bei established Shu Han to continue the Han Dynasty, and China entered the Three Kingdoms period.

The European Roman Empire during the Han Dynasty and the Peace Treaty was listed as the most advanced civilization and powerful empire in the world at that time. During the Han Dynasty, the scope of the Han Dynasty was established. At its peak, it was bordered by North Korea in the east, Vietnam in the south, Qinling in the west and Gobi in the north, covering a land area of about 6.09 million square kilometers. In AD 2, the population of the Western Han Dynasty reached more than 60 million, accounting for one third of the world at that time.

5. The Han Dynasty was the first golden age in the development history of China, and it was during this period that the Han nationality got its name. Because of its high degree of civilization, the Han nationality has always been in a dominant position among the fraternal nationalities in China, which is the result of historical development and natural formation. Since the Han Dynasty, although the name of the dynasty has changed, the status of the Han nationality as the main ethnic group in China has never changed.