Leadership is the guiding role of secondary nature. Therefore, practice is the source of knowledge, and knowledge is the guidance of practice. Theoretical innovation is the forerunner of social change. The leader embodies the reaction of consciousness and is the guiding role. The word "pioneer" cannot be used casually. It cannot be confused with the basis and source of practice.

Correct understanding is the forerunner of practice. It means that understanding can enable the subject to make predictions and plans for practical activities before they occur. It means that understanding reacts on the performance of practice. It does not mean that understanding precedes practice. practice.

Practice is the basis of understanding, but understanding has a guiding role in practice. It cannot be said that practice is the forerunner of understanding.

The active reaction of cognition on practice is fully reflected in the huge guiding role of theory as an advanced form of cognition on practice. First of all, theory is the understanding of the nature and laws of things. It can and should be in front of practice and guide the process of practical activities.

Secondly, scientific theory can predict the future and correct the direction of practice; thirdly, scientific theory, as a spiritual force, can promote people to innovate in practice.