Three Han and five Han. The Han Dynasty is famous for its Han Dynasty (206 BC-220 AD), with Chang 'an as its capital. The Han dynasty continued many management systems of the Qin dynasty, but weakened centralization. The Confucian way of governing the country was regarded as the creed of governing the country and keeping the country safe by the Han Dynasty. After 200 years, the control of the Han Dynasty briefly ended (9-24 AD, known as Wang Mang usurped the throne), and then the restoration lasted for another 200 years. By 220, the Han Dynasty had perished. Western Han Dynasty: The Western Han Dynasty (206 BC-8 AD) began with Liu Bang, the ancestor of the Han Dynasty, and finally became an obedient child, with 12 emperors. The Western Han Dynasty was the first unified and powerful empire in China. In the 200-year history of the Western Han Dynasty, through a series of political and economic reforms, the national strength was strong and the people were happy, showing a scene of peace and prosperity. During this period, China has been standing in the world as a world power. The Western Han Dynasty was one of the more powerful empires in China's history. Rulers focus on agricultural development, and have been practicing the policy of "rest and recuperation" throughout the ages. The people have plenty of food and clothing and live and work in peace and contentment, so the politics of the Han Dynasty has been relatively stable. During the Liang Wudi period, Minister Dong Zhongshu put forward the proposal of "ousting a hundred schools of thought and respecting Confucianism alone", which was adopted by Liang Wudi. Since then, Confucianism and Confucianism have formed the general plan of governing the country that China has followed since the Han Dynasty. Due to political and economic stability, handicrafts, commerce, humanities and arts and natural sciences have all developed by leaps and bounds. With the improvement of science and technology, the production efficiency of handicraft industry dominated by metallurgy and textile in the Western Han Dynasty has been greatly improved. Take textile as an example, there were embroidery machines that were close to forming in the Western Han Dynasty, which showed that some production at that time was separated from pure manual labor and improved productivity. The development of handicraft industry has promoted the prosperity of commerce, and many commercial cities have been formed with Chang 'an as the center, and diplomatic and commercial exchanges with western Asian countries have been opened up through the Silk Road. In the field of humanities and arts in Han Dynasty, an outstanding great historian-Sima Qian appeared. He completed China's first general history "Historical Records", which was praised by later generations as "a masterpiece of historians, with no rhyme in Li Sao". In addition, the artistic level of the Han Dynasty reached a fairly high level. Judging from some cultural relics unearthed from Han tombs in recent years, their workmanship and craftsmanship are as fine as today. For example, the pottery figurines with hoes unearthed in Guanghan, Sichuan, and the wooden boat model of Han Dynasty unearthed in Guangzhou are all rare art treasures with fine craftsmanship. Since the establishment of Liu Bang, the great ancestor of the Western Han Dynasty, China once became a powerful and wealthy empire. Therefore, the Western Han Dynasty is regarded as the first revival in the history of China.