Reply To: Chinese Vocabulary and Grammar Home›Forums›General Discussion›Chinese Vocabulary and Grammar›Reply To: Chinese Vocabulary and Grammar October 20, 2014 at 9:54 am #42930 RainbowParticipant It’s just a informal phrase, appears in daily conversations mostly. Or you can use the set phrase 疲于奔命（pí yú bēn mìnɡ）, which is more formal, it means to be kept constantly on the run; to be tired from running around; to be weighed down with work.
