You don’t need to watch the video to sign in at Duoduo Drive. According to the query of relevant public information, enter the app and click on Sign in and out, then take a photo, sign in and finally click to complete. If you need to sign out after four hours, click on My Sign in and out, then take a photo, sign in and finally complete. On the second day, continue to sign in and sign out for two hours. Two days = 6 hours and 360 minutes. Remember to sign out or the hours will be invalid.