2. Collect information through the library and network to understand the latest research results at home and abroad;

3. Analyze and study the obtained data and information;

4. Revise and improve the paper according to the teacher's opinion.

By searching related literature and books, we can comprehensively and systematically understand and master the theoretical basis, research progress and development status of research problems. Combined with relevant literature at home and abroad, this paper analyzes practical cases, analyzes specific problems from multiple angles, wide fields and systematically, and finds out the fusion point of xxx and xxx, as well as the links that need to be improved in related systems and systems.