Last month, our unit invited Teacher Yang to give a lecture. During the live speech, Teacher Yang said this clapping method. 1 hour is actually not long, just clap your hands while walking. If you think the time is too long, you can shoot for 20 minutes every day at first, and then gradually increase the time. Remember to stand or walk when clapping. Don't sit and clap your hands, it's useless to sit. You can also watch Teacher Yang's video "China Lecturer Network" on this website. Our unit invites teachers through this website.