ㄆㄡˇpǒuㄍㄢgānㄌㄧˋㄉㄢˇdǎn

  1. 比喻相待三國演義·一回》:變色漢朝皇叔剖肝瀝膽?』」披瀝肝膽」。

to be completely honest and sincere (idiom)​