既有今日，何必当初

Explanation: Now sorry, why would anyone do that? 　　Source: Puji Song Interpretation "Zen Master Wu Deng Hui Yuan Fasi Wai Wai Lin tink the Zen Master," said 'the lower flow, how to understand? 'The master said' V dead miles. 'Said,' If I had known the pain of not regret inadvertently did. '" 　　Examples: Gem of the body behind the Qing Cao sighed :"~?"( "Dream of Red Mansions," the twenty-eighth back)