关公

Lord Guan (i.e. 關羽|关羽[Guan1 Yu3])

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve

public / collectively owned / common / international (e.g. high seas, metric system, calendar) / make public / fair / just / Duke, highest of five orders of nobility 五等爵位[wu3 deng3 jue2 wei4] / honorable (gentlemen) / father-in-law / male (animal)

lit. to wield the broadsword in the presence of Lord Guan (idiom) / fig. to make a fool of oneself by showing off in front of an expert