After Zhou's reunification, Hehe had many children. Later, they all alienated each other and regarded each other as enemies. Wars often happen, and Zhou He can't ban them. Counties, the world can be peaceful. Qin Shihuang also believed that the world had been unified, and the establishment of many other countries was not conducive to reunification and peace could not be guaranteed, so he supported Li Si's opinion. Therefore, he divided the country into 36 counties, with counties under them. Compared with the enfeoffment system, the county system is an improvement and is conducive to national unity.

This whole set of centralization fundamentally eradicated the curse of the separatist regime of the vassal countries and played a positive role in consolidating national unity and promoting social development. Therefore, this system has been used for nearly two thousand years in the imperial society after Qin Dynasty.

2. Thought: Legalists

Reese spent most of his life pursuing legalism. After he was reused by the Qin government, with his outstanding political talent and foresight, he helped the Qin Dynasty to complete the great cause of unifying the six countries and conformed to the trend of historical development.

After the establishment of the Qin Dynasty, Li Si was promoted to prime minister. He continued to assist Qin Shihuang and made outstanding contributions to consolidating the Qin regime, safeguarding national unity and promoting economic and cultural development. He suggested that Qin Shihuang abolish the enfeoffment system and implement the county system. He also put forward the suggestion of unifying the characters, and then made great efforts in unifying laws, currencies, weights and measures, and car tracks. These measures were guided by legalists to strengthen centralization and absolute monarchy.

Extended data:

Reese (? -208 BC), at the end of the Warring States Period, was born in Shangcai (now Lisilou Village, Lugang Township, Shangcai County, Henan Province). A famous politician, writer and calligrapher in the Qin Dynasty.

As a county magistrate, I learn from Xun Qing. At the end of the Warring States period, he entered the State of Qin, and was first appointed as the Prime Minister of the State of Qin, Scheeren, and later as Lang. As a guest with a long history and prostration. When the King of Qin ruled for ten years (the first 237 years), he wrote to advise guests not to be expelled, which was adopted by the King of Qin. He also planned for Qin and the six countries, suggesting that South Korea should be captured first, and then the vassal States should be eliminated one by one to complete the great cause of reunification.