Sui Dynasty is a very important era connecting the Northern and Southern Dynasties and the Tang Dynasty. After the demise of the Northern Zhou Dynasty, Emperor Wendi of Sui established the Sui Dynasty, with its capital in Xi 'an today. However, the Sui Dynasty only existed for 38 years. The reason for its demise is that the central government's ruling position is unstable and Yang Di is too cruel. The Tang Dynasty was a very peak dynasty, which lasted for 289 years. Then the national strength was greatly reduced after the Anshi Rebellion, and there was a long-term war in the late Tang Dynasty, which eventually led to its demise.
Next came the Song Dynasty, which had a very rapid development in economy and culture. After the "shame of Jingkang", the Northern Song Dynasty perished. Later, the Southern Song Dynasty was invaded by the Yuan Dynasty, and the Song Dynasty was completely destroyed. The reason for its demise was that officials were too weak and incompetent, the emperor was fatuous, and years of war caused it. Then the Yuan Dynasty. The reason for the demise of the Yuan Dynasty was that the aristocratic life was too extravagant, and the unequal hierarchy brought deep oppression to the people, which eventually led to its demise. Then there was the Ming Dynasty, and the reasons for its demise were also political corruption, infighting in the imperial court and war. Finally, the Qing dynasty, the reason for the demise of the Qing dynasty is the corruption of government officials, backward closed-door thinking and so on.