Challenge Cup can refer to the paper. Entries can be submitted individually or collectively, and you can refer to the paper, because the reference paper shows that your research has a certain foundation. When applying for personal works, the applicant must undertake more than 60% of the research work of the declared works, and the signed author of the work appraisal certificate, patent certificate and published related works is the first author, and the number of applicants for personal works is no more than 3.