1. Qin dynasty

The Qin Dynasty closed its doors to the old (22 BC1-207 BC), which was the first unified feudal dynasty in China's history and was developed by Qin during the Warring States Period. Fei Da, the ancestor of the Qin people, is a descendant of Zhuan Xu, the grandson of the Yellow Emperor, and was given the surname of Won. When he was in Qin Mugong, he was a wise man, coachable was modest, destroyed twelve countries, traveled thousands of miles, and became increasingly powerful.

36 1 year ago, Qin Xiaolian succeeded to the throne as soon as possible, and made use of Shang Yang's two reforms to make Qin's economy develop and the combat effectiveness of the army continuously strengthen, and developed into the most prosperous vassal state at the end of the Warring States Period.

Ying Zheng, king of Qin, destroyed Korea, Zhao, Wei, Chu, Yan and Qi successively, thus completing the great cause of reunification. 22 1 years ago, Ying Zheng proclaimed himself emperor, and was called "Qin Shihuang" in history. The Qin dynasty set up three officials and nine ministers in the central government to manage state affairs; Partially abolish the enfeoffment system and replace it with the county system; Implement books in the same language, cars in the same track and unified measurement. Attack the Huns in the north, conquer hundreds of places in the south, build the Great Wall to repel foreign enemies, and dig Lingqu to connect the water system.

The establishment of centralization laid the basic pattern of China's political system for more than 2,000 years, and laid the ruling foundation of China's unified dynasty, so it was called "the implementation of Qin politics and law in past dynasties". The Qin Dynasty ended 500 years since the Spring and Autumn Period and the Warring States Period and became the first centralized country in China's history. This has had a profound impact on the history of China.

2. Han dynasty

At the same time, Guishuang, Rest in Peace and Daqin in the world are also called "the four empires closed their old age", and Emperor Wu of the Han Dynasty sent Zhang Qian to the western regions, connecting China, the West and the Silk Road in Asia. The Han Dynasty was the most advanced civilization and powerful empire in the world at that time. In the heyday of the Han Dynasty, there were Korea in the east, Vietnam in the south, Qingling in the west and Mongolia in the north.

The Chinese nation has been called the Han nationality since the Han Dynasty, which also made great achievements in the field of science and technology. For example, Cai Lun improved papermaking and became one of the four great inventions in China. Zhang Heng invented the seismograph and the armillary sphere.

The Han Dynasty was the first golden age in the history of China's development, and it was during this period that the Han nationality got its name. Because of its early civilization chain, 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. Although the names of dynasties have changed since the Han Dynasty, the status of the Han ethnic group as the main ethnic group in China has never changed.