What good and bad things did Ying Zheng do in history?

Ying Zheng used Reese, Wang Jian and others extensively. From the first 230 years to the first 22 years1year, the great cause of reunifying China was accomplished by destroying Korea, Zhao, Wei, Chu, Yan and Qi, and a centralized and unified multi-ethnic country, the Qin Dynasty, was established. At the same time, the central government implements three public officials and nine ministers to manage state affairs; Partially abolish the enfeoffment system and replace it with the county system; At the same time, books are the same language, cars are the same track, and unified measurement. Attacking Xiongnu in the north, conquering Baiyue in the south, and building the Great Wall of Wan Li; Build a canal to connect the Yangtze River and the Pearl River system. However, in his later years, Qin Shihuang pursued immortality and dreamed of immortality. He abused the people, stifled their wisdom and shook the ruling foundation of the Qin Dynasty.

Qin Shihuang laid the basic pattern of China's political system for more than 2,000 years, and was praised by Li Zhi, a thinker of the Ming Dynasty, as "an emperor through the ages".