The simplest thing is that it can't be ready right away. For example, buy a whistle and blow it when he is not looking. See if he moves quickly at once. If not. Go to Cool Dog and download an emergency ringtone number. Test it. Judging from walking, sitting and standing. If possible, ask her to climb the mountain and run to test her physical fitness. At worst, let him teach you to fold the quilt and dig a single bunker. Look at the rank and service history. If you are very young, there will be absolutely no problem for regimental cadres. I hope I can help you.