Dialectical materialism tells us that the world is material, and the only feature of material is objective reality, which requires us to think about problems and do things from objective facts.

The principle of dialectical materialism on the dialectical relationship between matter and consciousness holds that matter determines consciousness, matter is primary and consciousness is secondary, so we should proceed from the reality of objective existence and the reality of change and development.

In addition, matter is moving, and the movement of matter is not chaotic, but changes according to laws, and laws are inherent, essential and inevitable in the process of material movement, which means that the development and change of things have their inevitability, so we should seek truth from facts and explore the inevitable trend of things from the reality of objective existence.