Qin Shi Huang was the first emperor of a unified China, ruling from 221 to 210 BCE. He is best known for his ambitious projects, including the construction of the Great Wall of China and the famous Terracotta Army, which was built to protect him in the afterlife. His reign marked the beginning of the Qin Dynasty, which laid the foundation for the future of the Chinese state. Despite his achievements, Qin Shi Huang was also known for his harsh rule and strict laws. He centralized power, standardized weights and measures, and even created a uniform writing system. His legacy is a mix of remarkable accomplishments and controversial methods, making him a significant figure in Chinese history.