During the winter vacation, we should start to prepare written materials and collect articles related to graduation thesis. The topic selection of graduation thesis is generally reviewed by the instructor. The main task of winter vacation is to lay out the framework. In April and May, the time for finalizing the graduation thesis is mainly divided into several steps: 1. Literature review II. Opening report 3. The first draft of paper 4. Mid-term inspection (second draft) 5. Finalize.