2. Without a reliable system of succession to the throne, succession to the throne is in chaos. In the mid-Yuan Dynasty, emperors changed frequently. In just 25 years (1307 (the 11th year of Dade) to 1333 (the first year of Yuan Dynasty)), 36 emperors changed, making the situation even more unstable.
3. At the beginning of Yuan Dynasty, the people of the whole country were divided into four classes, among which the Mongols were the first class, the residents of the western regions were the second class "Semu people", and the Han people south of Huaihe River were the lowest class, which caused strong opposition from the Han people.
Extended data:
Although the Yuan Dynasty established by Mongols expanded outward and laid an unprecedented huge territory, it did not have any political ideals or noble sentiments.
The purpose of the Yuan Dynasty's external expansion was only to plunder wealth and satisfy the desire for conquest. Moreover, in the Yuan Dynasty, the whole society was morally bankrupt, corrupt and blindly superstitious about monks, which directly led to the collapse of the original huge Empire State Building.
The corruption of Yuan officials, like their initial force, is unprecedented in history. 1303, Yuan Chengzong vigorously rectified officials, 18473 corrupt officials were dismissed at one time.
The emperor became a puppet and could not make major decisions. There are constant court disputes and intrigues. During the Yuan Dynasty, Mongolian rulers increased their efforts to collect various taxes from the Han people, and the ethnic oppression was very serious, and the looting of the Han people was more common.
In this way, the people were forced to rebel, and the peasants held an uprising, and put forward the slogan of "expelling Land Rover, restoring China, establishing innocence and relieving the people", and pointed the finger at the Yuan Dynasty.
References:
Baidu Encyclopedia-Yuan Dynasty