回复：有没有人AP卡pending期间回国，然后approve以后寄回国，用AP入境成功了的？

Never do it. I know some it work for some people because the USCIS/CBP was not serious sometimes, but I also know some people had big trouble in this case. You have to follow the rule and can not count on that USCIS/CBP mistakenly do not carry out the rule.