You do know locals fear the sun more than COVID? Sun is bad, gives you cancer, makes you blind! So they say…
The things I have seen people do to avoid the sun…
The old country is sunny like 90% of the time, no winter bleak depressing rain weeks without end. Yet in the middle of summer/non rainy season we still have thousands of daily contagions. Brazilian folks wear little clothes in summer and the contagion is rampant.
So a little mask on the face is not a big deal for an elderly Taiwanese in terms of increasing their chances of getting sick of COVID19 because they got less sun. They are already wearing several layers and long sleeves and full face hats while carrying a UV block umbrella.