mǎ hòu pào
(fig.) a useless action or comment; sth done after it's too late
(Chinese chess) moving the cannon after moving the horse away; variant of 馬後炮|马后炮[ma3 hou4 pao4]
马
mǎ
abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]
后
hòu
back
炮
pào
variant of 炮[pao4]