The Post-Classical Era was one of the most important eras throughout the history. Each civilization had important leaders who expanded and made people’s lives better. China was one of the fastest growing civilizations during that time. Li Shimin also known as Emperor Taizong was one of China’s best leaders. He was the son of Emperor Gaozu. Li Shimin personifies the Post-Classical Era best. The Tang Dynasty flourished under his reign, he restructured and created a strong government, and was a great military leader. During Li Shimin’s reign, The Tang Dynasty flourished both economically and militarily. Most people considered him as one of the greatest emperors in Chinese history. Throughout his time as the emperor, he was looked upon as an