Who is the most successful emperor in history?

The first emperor, unified measurement, established the county system. Today, 2200 years later, China has not stepped out of the box he set in those years.

Ying Zheng, the first Qin Emperor (259 BC-2 BC10), was born in Handan, the capital of Zhao State, because his surname was Zhao. China is a famous politician, reformer and strategist in history. He was the first founding emperor in the Qin Dynasty to unify China. He is the son of King Xiang of Qin Zhuang. At the age of thirteen, he proclaimed himself emperor, and at the age of thirty-nine, he reigned for thirty-seven years. Qin Shihuang established the emperor system, and the central government implemented three officials and nine officials. The local government abolished the enfeoffment system and replaced it with the county system, unified writing and weights and measures, attacked the Xiongnu in the north and conquered the Great Wall of Wan Li in the south. It pushed China into the era of unification, created a new situation of establishing autocratic centralization, had a far-reaching impact on China and world history, and laid the basic pattern of China's political system for more than 2,000 years. Li Zhi, a thinker in the Ming Dynasty, praised him as "an emperor through the ages".