ㄌㄧㄣˊlínㄎㄜˇ穿ㄔㄨㄢchuānㄐㄧㄥˇjǐng

  1. 比喻事到臨頭辦法解決為時已晚參見臨渴掘井·張君房雲笈七籤·一一·太一天尊》:臨渴穿井噬臍。」

lit. face thirst and dig a well (idiom)​; fig. not to make adequate provision, to act when it is too late