越俎代庖

yuè zǔ dài páo

lit. to go beyond the sacrificial altar and take over the kitchen (idiom); fig. to exceed one's place and meddle in other people's affairs

to take matters into one's own hands

yuè

generic word for peoples or states of south China or south Asia at different historical periods

a stand for food at sacrifice

dài

to be a substitute for; to act on behalf of; to replace; to substitute

páo

kitchen