哪壺不開提哪壺 [ㄋㄚˇ ㄏㄨˊ ㄅㄨˋ ㄎㄞ ㄊㄧˊ ㄋㄚˇ ㄏㄨˊ; na3 hu2 bu4 kai1 ti2 na3 hu2] lit. mention the pot that doesn't boil (common saying); to touch a sore spot to talk about sb's weak point ◄ ►