Daily Chinese Idiom Guessing Game
To do something bad or illegal openly and audaciously, with no sense of shame or fear.
明目睁亮眼睛；张胆放开胆量。原指有胆识，敢做敢为◇形容公开放肆地干坏事。
《晋书·王敦传》今日之事，明目张胆，为六军之首，宁忠臣而死，不无赖而生矣。”
The politician was caught taking bribes in broad daylight, acting with such blatant disregard that he seemed to be doing it openly and audaciously.