臨渴掘井 (lam4 hot3 gwat6 zeng2) — to not make timely preparations; to prepare for something only when there is already need for it; (lit.) to dig a well when you're already thirsty in Cantonese
lamˎ₄臨hot˗₃渴gwatˍ₆掘zengˊ²井简 临渴掘井
Mandarin Pinyin: lin2 ke3 jue2 jing3
Meaning of 臨渴掘井
nounto not make timely preparations; to prepare for something only when there is already need for it; (lit.) to dig a well when you're already thirsty