The Western Han Dynasty (202 BC-9 BC), also known as the pre-Han Dynasty, and the Eastern Han Dynasty (later Han Dynasty) are collectively called the Han Dynasty. It was a unified feudal dynasty in ancient China after the Qin Dynasty. On February 28th, 202 BC, Liu Bang proclaimed himself emperor, with the title of Han, which was known as the Western Han Dynasty in history. Liu Bang was the emperor of Emperor Gaozu. 10 September 10 year 10 October, Wang Mang became emperor, changed his name to new, and the Western Han Dynasty perished. There were fourteen emperors in the Western Han Dynasty, which lasted 2 1 1 year. The Western Han Dynasty was a peak of China's cultural development, with all-round social, economic and cultural development and increasingly frequent foreign exchanges, becoming one of the most powerful countries in the world at that time. The capital of the Western Han Dynasty was Chang 'an (now northwest of Xi City, Shaanxi Province). Mausoleums are all over Guanzhong, and cultural relics are very rich, showing a colorful era style of "Han and the world".