If you look at the data here [1] (desktop edition because the mobile edition doesn't have drill down), you can see that all countries (including Asian) are following the same pattern in the "daily increase" graph (click a country on the left to see its data). The only outliers are China and South Korea (flatline), and Japan (flattened curve).
So while masks may have some effect, it hasn't been enough to give different graphs to Asian nations in general.
So while masks may have some effect, it hasn't been enough to give different graphs to Asian nations in general.
[1] https://www.arcgis.com/apps/opsdashboard/index.html#/bda7594...