The history of China is divided into three parts: Wei Shuwu, before and after the Second Jin Dynasty, the coexistence of the Northern and Southern Dynasties, and the biography of the Sui, Tang and Five Dynasties; How to explain these sentences?
Three-point Wei Shuwu: It refers to the period when the Three Kingdoms stood in the balance. Wei, Shu and Wu conquered and contained each other, which greatly hindered the social and economic development of China. During the Three Kingdoms period, the population of China dropped sharply, leaving ten rooms empty. Before and after the Second Jin Dynasty: refers to the Western Jin Dynasty and the Eastern Jin Dynasty. It means that the Eastern Jin Dynasty continued Sima's dominance after the demise of the Western Jin Dynasty, so it continued before and after the Second Jin Dynasty. The key is that the imperial vein has not changed. Coexistence of Northern and Southern Dynasties: The Northern and Southern Dynasties were a divided period in China's history after the Jin Dynasty. Historically, the four southern regimes of Southern Qi, Northern Qi and Chen were called Southern Dynasties, and the five northern dynasties of Northern Wei, Eastern Wei, Western Wei, Northern Qi and Northern Friday were called Northern Dynasties. The period of opposition between the northern and southern regimes is called the Northern and Southern Dynasties in history. Biography of Sui, Tang and Five Dynasties: Sui, Tang and Five Dynasties is an important period in the history of China. The Tang Dynasty was the strongest and largest feudal empire in China's history, with high political, economic and cultural development, reaching the peak of China's feudal society. The Sui Dynasty was the eve of the rise of the Tang Dynasty, and the Five Dynasties and Ten Kingdoms was the decline period of this period. The Five Dynasties are the Five Dynasties in the Central Plains, and the ten countries (except the Northern Han Dynasty) that have coexisted with them are all in the south of Qinhuai River. There are other coexisting Liao and Xixia Dynasties, but because China's history books are generally centered on the Han nationality, other ethnic regimes are often ignored.
The Five Dynasties and Ten Kingdoms was a period of great chaos and extinction, with tyrants above and cruel officials below. In addition, the famous cities Chang 'an and Luoyang were destroyed all the year round, so the predecessors called the Five Dynasties "Five Seasons", that is, the last generation and the worst generation. Therefore, Ouyang Xiu often begins with "alas" in his History of the New Five Dynasties. This is not because he is putting on airs, much less because of anything else. In the five dynasties, there was a cruel punishment of "within the year" (that is, thousands of cases).
However, this period is also a period of unity and stability. This period laid the foundation for the establishment of a unified country in the Northern Song Dynasty, and other aspects, such as the development of gunpowder and printing, and the emergence of ci, also achieved success.