After the notice of the summer camp comes out, it is required to submit the materials research institute for preliminary examination within the specified time. Here, academic performance, class ranking, paper publication and project experience are very important. After the first trial, it is relatively simple. This summer camp has a high enrollment rate and relatively simple exams. Pre-admission will be made after the summer camp is passed, and you will be officially admitted after you get the postgraduate quota.
In addition to the Chinese Academy of Sciences, many universities also have summer camps, so you can visit them more.
Good luck!