入邦问俗

Explanation: See "Immigration asked vulgar." Thesaurus:  take such measures as one suitable to local conditions, cut one'scoataccording to one's cloth, shutter walk, When in Rome do as the Romans do., Actually cut into the question, Asked the customs entry, When in Rome do as the Romans do., when in Rome do as the Romans do, Shenliqianjie, Shutter Moving