1. The development process refers to the development process of history, what happened in the middle of the development process, the reasons for these things and what role they played in the development of history. Development is a process of progress and change from birth, and it is the constant 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.

The course of development includes the life of the individual. Development exists regardless of age.

Development involves many 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 moving forward, but also to the change of decline and demise.