We all know that when two boxers fight, the clever boxer usually gives a little ground at first, while the foolish one rushes in furiously and uses up all his resources at the very start, and in the end he is often beaten by the man who has given ground.

• 谁人不知，两个拳师放对，聪明的拳师往往退让一步，而蠢人则其势汹汹，辟头就使出全副本领，结果却往往被退让者打倒。