Taivo A Taiwan Mandarin dictionary

前功盡棄

qiángōngjìnqì

ㄑㄧㄢˊ ㄍㄨㄥ ㄐㄧㄣˋ ㄑㄧˋ

Simplified 前功尽弃

  1. 1to waste all one's previous efforts (idiom)
  2. 2all that has been achieved goes down the drain

Keep 前功盡棄 and it comes back until you know it.

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