South Korea did have a near perfect compliance in wearing masks outside of your home. I think that’s what helped them keep it fairly under control for such a populous country.
Just to be clear - it was near perfect and not 100%
Seoul, a city of 10+ million, had 214 new cases today. The health minister's rhetoric only serves to show how well South Korea dealt with the first wave.
True, but they haven't been able to control it entirely; cases are definitely rising. Either their measures were effectively enough for summer, but not winter, or people are getting lax in their behavior because of lockdown fatigue.