Lý Công Uẩn was a prominent Vietnamese leader who founded the Lý Dynasty in 1009. He is best known for establishing Hanoi as the capital of Vietnam, which was then known as Thăng Long. His reign marked a significant period of stability and cultural development in the country. Under Lý Công Uẩn's leadership, Vietnam saw advancements in agriculture, trade, and education. He promoted the spread of Buddhism and Confucianism, which influenced Vietnamese culture and governance. His legacy continues to be celebrated in Vietnam for his contributions to the nation's identity and unity.