Why was Shi Huangdi an important figure in Chinese history?

He was the first emperor to rule according to Confucian principles.
He was the first emperor to rule according to a system of Legalism.
He wrote a collection of Daoist sayings.
He greatly expanded the territory of the Chinese Empire.

Shi Huangdi was an important figure in Chinese history because he greatly expanded the territory of the Chinese Empire, unifying various states and establishing the Qin Dynasty. He was also the first emperor to rule according to a system of Legalism, which emphasized strict laws and harsh punishments to maintain control. This had a significant impact on the development of Chinese political and legal systems.