The tyranny of Qin Shihuang directly contributed to the change of the ruling policy of the Han empire, thus laying the foundation of the Han family for 600 years. Otherwise, I don't think the Han Dynasty is much better than Qin Guoqiang. As a negative textbook, Qin Shihuang's historical contribution is not small.
Qin Shihuang strengthened the military machine, and his means of building the army and his thoughts of running the army have been imitated by later generations. Especially after the political reform, Qin's military system and the policy of land to the tiller became the best examples of the success of the founding monarchs in past dynasties. Cao Cao's strategy of reclaiming farmland and Zhu Yuanzhang's idea of "building a wall and accumulating grain" are actually the products of the Qin Shihuang era.
With the reunification of China, people will no longer suffer from war. Since then, the great integration of the Chinese nation has entered a new stage.
Only when centralization is strong can the country concentrate on doing great things. Although it is not necessarily a good thing, there are still a few things worth writing about.
Building the Great Wall-Although this great project of the Qin Dynasty was hated by the world, the later dynasties regarded it as a magic weapon to resist the nomadic people in the north. Qin Shihuang's construction of the Great Wall in Wan Li became a major national defense project for later generations, which lasted until the end of the Ming Dynasty. This has directly affected the development of the relationship between agricultural areas and nomadic peoples in China.
Building military trunk roads-ancient expressways. Through this road, it only takes a few days for Kuaima to get to Qin Dou from Jiuyuan, the northern fortress. These soldiers are very expensive.
Lingqu-the most labor-saving, convenient and largest mode of transportation in ancient times, or water transport.
As for the unity of writing, currency and weights and measures, it directly strengthened the internal cohesion of the Chinese nation and promoted the formation of the idea of great unity. It can be said that the merits are in the past and the benefits are in the future! Although we have a southern accent and a complicated dialect, we can speak one language, which is due to Qin Huang. Qin Shihuang's military, political and economic thoughts influenced the feudal dynasty that lasted for more than two thousand years after the Qin Dynasty.