- 入国问禁 rùguówènjìn to respect local taboosWhen entering a country, first inquire about its local prohibitions and taboos; it is common practice to respect the customs of a new place to avoid offending the locals.
- 入境问禁 rùjìngwènjìn when in Rome, do as the Romans doWhen entering a new place, first ask about the local taboos and customs; more generally, to learn about and respect local habits when arriving in a new environment