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三国两晋南北朝是封建国家分裂和民族大融合时期。封建国家的分裂表现为三国鼎立、东晋十六国对峙、南北朝的更替。其间,也有暂时的全国性统一（如西晋）和几次局部统一（曹魏、前秦、北魏、北周统一北方）。这一时期民族融合的形式和途径多样,如民族迁徙、联合斗争、友好交往、少数民族统治者北魏孝文帝的改革。江南的持续开发是这一时期又一重要历史现象,应着重掌握江南得以开发的原因和表现。在文化方面,这一时期科学技术、文学艺术成就非凡,不少领域领先于世界。如祖冲之推算圆周率的成就比欧洲早1100多年;贾思勰的《齐民要术》是世界农学史上的优秀著作之一;云冈石窟是我国雕刻艺术的瑰宝等。
The Three Kingdoms, Two Jins, and the Northern and Southern Dynasties were feudal countries that divided and merged nationalities. The fragmentation of the feudal states is manifested by the transformation of the Three Kingdoms, the Sixteenth Kingdom of the Eastern Jin Dynasty, and the change of the Northern and Southern Dynasties. In the meantime, there are also temporary national unifications (such as the Western Jin Dynasty) and several local unifications (Cao Wei, Qinqin, Northern Wei, Northern North unified north). The forms and ways of national integration in this period were diverse, such as ethnic migration, joint struggle, friendly exchanges, and the reform of the minority ruler Xiao Wei Xiao of the Northern Wei Dynasty. The continued development of Jiangnan is another important historical phenomenon during this period. It should focus on the reasons and performance of Jiangnan’s development. In terms of culture, science, literary and artistic achievements during this period are extraordinary, and many fields lead the world. For example, Zu Chong’s pi projection was more than 1,100 years earlier than Europe; Jia Sui’s “Qi Min Yao Shu” was one of the outstanding works in the history of agronomy in the world; Yungang Grottoes is a gem of Chinese sculpture art.