How was the quin different from the zhou?

The Qin dynasty (221-206 BCE) was marked by a centralized, authoritarian government, whereas the Zhou dynasty (c. 1046-256 BCE) operated under a feudal system with decentralized power shared among various lords. The Qin implemented significant reforms, standardizing weights, measures, and the writing system, while the Zhou era was characterized by a more fragmented political structure and the Mandate of Heaven, which justified their rule. Additionally, the Qin's rule was much shorter but more intense, leading to significant infrastructure projects like the Great Wall, in contrast to the Zhou's longer and more culturally influential period.