be already too late; be a bit too late; belated action (/advice /effort) ❍ 你们的支援是～，于嘛不早点来呢？Your support is a bit too late. Why didn’t you come here earlier?
马后炮ma hou pao
belated action or advice
马后炮
fire belated shots;take belated action;offer belated advice;make belated efforts 放～give advice after the event;be a Monday morning quarterback