ku3
xin1
gu1
yi4
  1. to make painstaking efforts (idiom); after much trouble
  2. to work hard at sth

Characters

  • 苦 (苦): bitter; hardship; pain; to suffer; to bring suffering to; painstakingly
  • 心 (心): heart; mind; intention; center; core; CL:顆|颗[ke1],個|个[ge4]
  • 孤 (孤): lone; lonely
  • 诣 (詣): to go (to visit a superior); one's current attainment in learning or art

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