Understand the product-analyze the existing-summarize-find the design entry point. Regarding the summarized content, some must be observed, some must be overturned, some must be continued, and some must be discarded. In the actual design process, it is difficult to realize according to theoretical ideal thinking, and the design process is not only an ID that can be completely controlled. But even so, as an ID, you should leave a pure land of thinking for yourself as much as possible. It is as important to satisfy and convince yourself!