It's interesting to see how, in Vietnam, after 100 days of no community transmitted case of Covid-19, they found and confirmed a case today and people in the whole province immediately started wearing masks again without being told.
Yeah the experience certainly helps but also the fact that people are very health-conscious & community/family-minded. The deputy prime minister did say, the gov can try all they want, but if people don't care then it'd have fallen apart.