一个人只有一个心脏，却有两个心房。一个住着快乐；一个住着悲伤。不要笑得太大声，不然会吵醒旁边的悲伤。

A man has only one heart, but there are two atrium. A live happy; A lived sorrow. Don"t laugh too loudly, or you will wake the flank of sorrow.