I live in Nanjing, China, and work in Nanjing Normal University. My major is measurement and evaluation in sports and PE. My favorite hobbies are tennis and badminton, and normally play them about two hours, three times every week. In China, we always communicate with each other by Weixin or QQ software. I am glad to join this international project, and look forward to get information of PA or PF of students from other countries and some research project.