Why don't you generally count the Eastern Jin Dynasty as the "Southern Dynasties"? Sixteen countries count as "Northern Dynasties"?

The story begins with the demise of the Western Jin Dynasty. First of all, the short life of the Western Jin Dynasty is a historical necessity. The Western Jin Dynasty lasted for 52 years, and an important reason for its short life was that the policy of the Western Jin Dynasty belonged to the enfeoffment system, which decentralized the central power of the royal family. Moreover, the policies of the Western Jin Dynasty supported landlords and nobles very much, which led to the imbalance of local classes and sharp class contradictions. After the demise of the Western Jin Dynasty, the Central Plains dynasty began a period of division. First, Si Marui, the royal family of the Western Jin Dynasty, went south to establish the Eastern Jin Dynasty. Sixteen countries in the north are collectively called sixteen countries in history. This is how the sixteen countries in the Eastern Jin Dynasty confronted each other. After that, Emperor Xiaowen of the Northern Wei Dynasty made great efforts to reform and gradually unified the North. Later, the Northern Wei Dynasty was divided into the Eastern Wei Dynasty and the Western Wei Dynasty. Later, the Northern Zhou Dynasty and the Northern Qi Dynasty replaced the Eastern Wei Dynasty and the Western Wei Dynasty respectively, and the Northern Zhou Dynasty finally eliminated the Northern Qi Dynasty. This period of history is called the Northern Dynasties. In the south, after a period of "unparalleled fighting" in the Eastern Jin Dynasty (the Battle of Feishui), Emperor Wu usurped Jin and established Liu Song, which was the beginning of the Southern Dynasty. There were four dynasties in the Southern Dynasty: Song Dynasty, Qi Dynasty, Liang Dynasty and Chen Dynasty. Then came the well-known Sui Dynasty, which unified the separatist regime between the north and the south. Summary: Western Jin Dynasty-Sixteen Countries/Eastern Jin Dynasty-Northern Dynasty/Southern Dynasty-Let's talk about the history from Tang Dynasty to Yuan Dynasty. First of all, after the famous An Shi Rebellion broke out in the Tang Dynasty, the national strength gradually weakened and was finally replaced by Zhu Wen. After the collapse of the Tang Dynasty, three regimes appeared in the northern part of the Yellow River Basin: Hou Liang, Later Tang Dynasty, Later Jin Dynasty, Later Han Dynasty and Later Zhou Dynasty. Nine regimes, namely Wu, Nantang, wuyue, Houshu, Chu, Min, Nanhan and Nanping, appeared in the south, and the northern Han in Taiyuan lived in the north, which was known as the Five Dynasties and Ten Kingdoms in history. After a period of time, Zhou Shizong vigorously reformed and governed, which greatly enhanced the national strength of Houzhou. Later, a famous mutiny took place in Chen Qiao, and Zhao Kuangyin, a general of the later Zhou Dynasty, was added to the body to establish the Northern Song Dynasty. Later, the central plains and the southern region were gradually unified. Two regimes, Liao and Xixia, appeared in the north, which confronted the Northern Song Dynasty. Great changes have taken place in the following hundreds of years: the regime established by the Jurchen nationality gradually replaced Liao, and after the demise of the Northern Song Dynasty, the Southern Song Dynasty was partial to a corner of the south of the Yangtze River; After a period of development (this period can be called the peak of China's past economic development), Mongolians gradually set foot on the Central Plains. After the demise of Xixia, Jin and Southern Song Dynasty, Mongolia entered the Central Plains and established the Yuan Dynasty. Summary: Tang Dynasty-Five Dynasties and Ten Kingdoms-Northern Song Dynasty-Southern Song Dynasty-End of Yuan Dynasty ~ I hope these can help you. If I'm wrong, please point it out. Thank you! Author: Baidu knows @ cold _ bubble _ tea