lòu mǎ jiǎo
to reveal the cloven foot (idiom); to unmask one's true nature
to give the game away
lù chū mǎ jiǎo
to reveal the cloven foot (idiom); to unmask one's true nature
to give the game away
mǎ jiǎo
sth one wishes to conceal
the cat (as in "let the cat out of the bag")