Step 2 introduce

The Qin Dynasty (22 BC/KLOC-0 BC/-207 BC) is an extremely important dynasty in the history of China, the first unified empire in the history of China, and it was developed by the State of Qin at the end of the Warring States.

Qinyuan was a vassal state of the Zhou Dynasty, and its ancestor Boyi had assisted Dayu in water control, and was given a surname of Won by Shun Di. The concubine, a descendant of Boyi, once raised horses for Zhou, and with his skill, horses multiplied quickly. Zhou later enfeoffed Qin Gu (southwest of Tianshui City, Gansu Province) to him, which is the origin of Qin State. In 770 BC, Qin Xianggong escorted Zhou Pingwang eastward to Luoyi and became a vassal. After the founding of the Qin Dynasty, it occupied the territory of the Eastern Zhou royal family in Guanzhong.

From 230 BC to 22 BC1year, Ying Zheng, the king of Qin, destroyed the six countries of Kanto successively, thus completing national reunification, and then attacked Xiongnu in the north and Baiyue in the south. A series of new policies were adopted in politics, military affairs, economy, transportation, culture and opening to the outside world, which greatly strengthened the unity of the whole country and had a considerable impact on later generations.

The Qin Dynasty ended the 500-year-old warlord regime since the Spring and Autumn Period, and became the first unified centralized country with Huaxia as the main body and multi-ethnic integration in China history. It created the emperor system, the central official system represented by three officials and nine officials, and the county system, completely broke the Shi Qing Shi Lu system since the Western Zhou Dynasty, effectively safeguarded national unity, strengthened the central government's control over local areas, and laid the foundation for the rule of China's unified dynasty. Therefore, "there are still Qin politics and law in one hundred generations."

The royal family of the Qin Dynasty won the surname, so it is not called the Qin Dynasty in the history books. As the regime of the Qin Dynasty, it is different from other countries. After the death of Qin Shihuang, Qin Ershi, Hu Hai and Zhao Gao conspired to tamper with the Qin law, which triggered a large-scale civil revolt. In 206 BC, Zi Ying, king of Qin, surrendered to Liu Bang, and the Qin Dynasty perished. It was only 15 years from the unification of the six countries to the demise of the Qin Dynasty.