How much pressure can ipad4 withstand? Will it be crushed?

me too! Ah, owner, I just bought my ipad air only 3 days ago, put it on the nightstand, accidentally by my relative one foot support stepped on it, then I was going crazy! He is in order to take pictures so one foot on the nightstand, the other foot on the floor, he did not know that there is an ipad above, although unintentional, I can not let him compensate, but the heartache died, disturbed a night, a variety of search Baidu, a variety of look, see the screen is not bad, fortunately not bad, but the psychological still feel doubt, the old fear that it has internal injuries