AdvertisementReviews & adviceSouth-East Asia Opinion Ten things we’ll never understand about Vietnam Brian Johnston Travel writer January 29, 2026 — 2:00amJanuary 29, 2026 — 2:00am Save You have reached your maximum number of saved items. iStock What you’ll quickly understand is that Vietnamese street food is fabulous. AdvertisementAll those zeros Vietnamese dong: just knock a few zeros off, please. Touching someone’s head The internet is full of spurious advice about supposedly strange Asian social customs, and in Vietnam you’re urged not to touch anyone’s head. What I don’t understand is why the internet unthinkingly circulates such endless nonsense.