ㄅㄨˊㄉㄠˋdàoㄏㄨㄤˊㄏㄜˊhuánghéㄒㄧㄣxīnㄅㄨˋˇ

不到黄河心不死
bù dào huánghé xīn bù sǐㄅㄨˋ ㄉㄠˋ ㄏㄨㄤˊ ㄏㄜˊ ㄒㄧㄣ ㄅㄨˋ ㄙˇ
  1. 比喻意志堅定輕言放棄比喻目的誓不罷休 科學家秉持不到黃河心不死信念發現宇宙爆炸直接證據」。

lit. not to stop until one reaches the Yellow River (idiom)​, fig. to persevere until one reaches one's goal, to keep going while some hope is left