1. The development process refers to the development process of history, what happened in the middle of the development process, the reasons for these events and what role they played in the development of history. Development is a process of progress and change from birth, and it is the continuous renewal of things. It refers to a continuous process of change. There are both quantitative and qualitative changes.

2. The connotation of development:

Development includes both physical and psychological changes in an individual.

The course of development includes the life of an individual. There is development regardless of age.

Development involves multiple areas. Such as the individual's body, brain, thinking, imagination, emotions, etc., are all within the scope of development.

Development refers not only to the process of advancing, but also to the change that declines and dies.