白費力氣 (baak6 fai3 lik6 hei3) — go to naught; labor in vain in Cantonese
baakˍ₆白fai˗₃費likˍ₆力hei˗₃氣简 白费力气
Mandarin Pinyin: bai2 fei4 li4 qi5
Meaning of 白費力氣
noungo to naught; labor in vain
noun(proverb) to waste someone's energy; all the labor or manpower's work is in vain