The Song Dynasty was the later period of China's feudal society and one of the periods of cultural prosperity in Chinese history. It began in 960 and ended in 1279, lasting about 300 years. The Song Dynasty had made great achievements in politics, economy, and culture, and became a glorious period in ancient Chinese history. The capital of the Song Dynasty was Beijing, and its economic center was in the south, with Suzhou, Hangzhou, and other cities as the center. In terms of culture, the Song Dynasty's poetry, calligraphy, painting and other arts reached an unprecedented height, the most famous of which was the Song Ci. Song Ci is an important part of Chinese literature. It mainly describes social life, expressing feelings, depicting scenery and so on. The words are exquisite, the feelings are sincere, and the artistic conception is profound. It is a treasure in the treasure house of Chinese culture. In terms of politics, the Song Dynasty implemented a political system of separation of powers, including the emperor, the prime minister, and the privy envoy. The legal system of the Song Dynasty was relatively complete, including civil law, criminal law, and criminal law. In addition, the Song Dynasty also actively developed military defense and established the system and training system of the Song army, which made an important contribution to the country's security and stability. Generally speaking, the Song Dynasty was an important period in Chinese history. It had made great achievements in politics, economy, culture and other aspects, which had a profound impact on Chinese history and culture.