It's easier to hide a clear gun than a hidden arrow
It's a Chinese idiom that it's easy to hide an open gun, but the hardest to guard against a hidden arrow.
explain
Idiom: it's easy to hide an open gun, but it's hard to defend a hidden arrow
Pinyin: m í nqi à NgR ó ngy à Du à, à NJI à nzu à n á NF á ng
Explanation: it means that an open attack is easy to deal with, and a covert set-up is difficult to guard against. It's the same as "it's easy to hide an open gun, but hard to defend a hidden one.".
Discrimination of words
It's easy to hide a gun, but hard to defend it
It's easier to hide a clear gun than a hidden arrow
take pity on the poor and the old - lián pín xī lǎo
come back with a flick of one 's sleeve - fú xiù ér guī
severity in speech and fairness in principle -- as the utterance of an upright person - cí yán yì zhèng