People wearing face masks visit an international contemporary art fair in Ankara, Turkey, on March 30, 2021. Photo: Xinhua

A man wearing a face mask visits an international contemporary art fair in Ankara, Turkey, on March 30, 2021. Photo: Xinhua

An artist wearing a face mask paints an artwork at an international contemporary art fair in Ankara, Turkey, on March 30, 2021. Photo: Xinhua

People wearing face masks visit an international contemporary art fair in Ankara, Turkey, on March 30, 2021. Photo: Xinhua