Is unfavorable aristocratic education the reason for the fall of the Song Dynasty?

There are many differences in the mechanism of the formation of Chinese and Western feudal societies, the main point is that the Western feudal society was y influenced by the Greco-Roman democracy, while China has always been under a high degree of authoritarianism since the beginning of the Xia and Shang dynasties, and the ruling class is the son of God, so in the heart of the level of the East and West of the ruling class of the positioning of the self there is a big difference, which to a certain extent can be very able to create a certain degree of the above situation. In order to explore the causes of the Song's demise, we should take into account many negative factors. Of course, the incompetence and inaction of the aristocracy was certainly one of the reasons. In addition, the redundant officials, huge military expenses, low combat effectiveness, natural disasters, and the rise of the Mongol Yuan should also be taken into account.