各打五十大板
put the blame on the two parties equally; blame both sides without discrimination;punish the innocent and the guilty alike;punish the wronged and the wrongdoer alike
各打五十大板ɡè dǎ wǔ shí dà bǎn
指不分对错,对双方处以相同的惩罚。punish the guilty and the innocent alike, blame both sides without discrimination