In the winter of 4 17, Emperor Wu of Song ordered Liu Yizhen and other generals to lead the army eastward, and was pursued by Xia Jun, which weakened him and ended the Northern Expedition. After the fall of Guanzhong, Emperor Wu of Song began to actively beg for mercy. In the same year, Emperor Wu of Song killed Emperor Jin 'an and made his brother Devon emperor of Gong Jin. In 420, Emperor Wu of Song abolished the independence of Gong Jin and established the Song Dynasty, which was called the Southern Song Dynasty in history for the sake of Song Wudi and the Eastern Jin Dynasty. After the Northern Wei Dynasty unified North China in 439, it entered the Southern and Northern Dynasties.

The Eastern Jin Dynasty (3 17-420) was a political power established after Si Marui, the imperial clan of the Western Jin Dynasty, moved southward. The Western Jin Dynasty, with Luoyang as its capital, perished, which was called the Eastern Jin Dynasty in history. In addition, the imitation of the Eastern Han Dynasty in history books is called the China Jin Dynasty, and it is called the Central Jin Dynasty, which means the revival of the Jin Dynasty. In addition, most of the areas ruled by the Eastern Jin Dynasty were in Jiangdong, which was called Jiangzuo in ancient times, so Jiangzuo was referred to as the Eastern Jin Dynasty for short.

In the second year of Yuanxi (420), Emperor Wu of Song abolished Emperor Jin 'an and established Liu Song. The Eastern Jin Dynasty perished, and the history of China entered the Southern and Northern Dynasties.

On the other hand, the Eastern Jin Dynasty made some achievements in literature, and all kinds of poems and songs flourished in the Eastern Jin Dynasty. Famous writers, such as Xie Lingyun, Tao Yuanming and Wang Xizhi, also popularized parallel prose. The story background of Liang Zhu, one of the four great folklores in China, also happened in the Eastern Jin Dynasty.

References:

Baidu encyclopedia-eastern Jin dynasty