Correct
明枪易躲，暗箭难防
/ míng qiāng yì duǒ, ànjiàn nán fáng /
Strokes
Definition
lit. easy to dodge the spear in the open, hard to avoid a stab in the dark (idiom); it is hard to guard against secret conspiracies
Example
Definition
it is easy to dodge a spear thrust in the open, but hard to guard oneself against an arrow shot from ambush—false friends are worse than open enemies;hidden attacks are more dangerous than open acts of enmity