Tell me if you know anything about history.

During the reign of Yang Di at the end of Sui Dynasty, the world died of hard labor, which led to chaos at the end of Sui Dynasty, and the Sui Dynasty soon perished. However, there are many unified dynasties similar to the Sui Dynasty in history, such as Han, Tang and Song, which also experienced cruel and decadent rule in the last years of the dynasty, but most of them can survive for a long time by inertia. The Sui Dynasty once unified China and foreign countries and prospered for a while, but "prosperity was abrupt and death was abrupt". What is the reason? Looking back at the history, at the end of Sui Dynasty, landlords' armed forces rose up everywhere, and the Guanzhong area based on Li Tang regime was the largest. There are a large number of upper-class landlords in Guanzhong area, with strong local power, prominent social prestige and strong political energy. Li Yuan wrote in the article "Giving Official Education to the Heroes of Sanqin" that "the banner of righteousness helps the river, Guanzhong responds, and the gates converge, and those who leave feel at home." Heroes of the Five Tombs, three generals crowned, princes in general mood, chivalrous children threw themselves at me. When they are afraid of the future, they strive for success. It shows that the quantity and quality of Guanzhong strongmen are very high, and they are powerful. After being oppressed by the imperial court, he was particularly rebellious. So during the rebellion of the ruling clique, these powerful people took the opportunity to launch an uprising. From Jianghuai to Lingnan, these places were originally the ruling areas of the Southern Dynasties, and there were many big landlords who supported the Southern Dynasties. After the establishment of the Sui Dynasty, most of them became alien forces in the Sui Dynasty. As a result, a large-scale anti-Sui armed rebellion broke out in the southern region. At that time, there was an old general opposition. Although Emperor Wendi of Sui Dynasty put down this great riot, he adopted a combination of repression and compromise. Many rebel leaders later became secretaries and county chiefs, so this powerful force has not been eradicated. Once the world changed, these potential forces immediately rose up against Sui. There are also many landlords in the middle and lower reaches of the Yellow River, that is, today's Henan and Shandong. Contradictions in the Central Plains have always been complicated, leading to turmoil, and the old name is difficult to treat (Cao Cao was in Ye Jiandu to stabilize Hebei during the Three Kingdoms period). After the Sui Dynasty levied Tuguhun, the horses and donkeys of the country died in nine cases out of ten, and then they levied Koryo. Yang Di collected more than 100,000 horses, mainly from the Central Plains, so all the rich people in the Central Plains lost their homes. Contradictions within the ruling class have intensified, and the foundation of the Sui regime has been crumbling. Thus, three forces within the ruling class, represented by Yang Xuangan, the high officials and dignitaries of the Sui Dynasty, the remnants of the Southern Dynasties represented by Xiao Xian and Shen Faxing, and the local tycoons represented by Liang and Liu Wuzhou, rallied against the Sui Dynasty, with full fronts and scattered hearts. Historians have said that separatist rebellion is called "collapse" and peasant uprising is called "disintegration". It is not surprising that the Sui regime not only lost the popular support of the world, but also lost the support of the landlord class, and fell apart in an instant. Thus, Yang Di's harsh corvee and military service oppressed the working people, even the aristocratic landlords, and caused a large-scale peasant uprising and landlord resistance, which was the direct cause of the demise of the Sui regime. However, the Sui Dynasty was a unified dynasty established after the long division of China. Its situation is similar to that of the Qin Dynasty, and its appearance is extremely powerful. Under the unified system, various separatist forces are surging under the undercurrent. There are deep unstable factors buried inside the ruling class, and the ruling foundation is very unstable. This inherent defect of the Sui regime itself is the fundamental reason for the rapid demise of the Sui Dynasty when it was strong.