The main reason is economic. China has always been a self-sufficient natural economy, but with the development of handicrafts, industry and other industries, from the heyday of the Tang Dynasty to the germination of capitalism in the Ming and Qing Dynasties. When political policies cannot satisfy or hinder economic development, this political system will inevitably perish.

Political reasons, as I mentioned before. The monarch's tax policy concerns the people. When the people can no longer bear it, it is also a time to rebel.

The key to political decision-making lies in the monarch and the good minister.