A pic to identify mainland Chinese

有消息人士称，它用于在海外旅行的华人之间相互辨别身份。凡是看到这张图片先是哈哈大笑，然后黯然落泪的，可以判断为大陆同胞。
Someone says that this pic is used among Chinese abroad to identify themselves. Whoever laugh then become sad after see this pic, can be identified as from China mainland.