A boy in traditional attire wearing face shield and mask participates in a parade to mark the Gaijatra festival, or festival of cows, at the premises of Basantapur Durbar Square in Kathmandu, Nepal on Aug. 4, 2020. (Photo by Sulav Shrestha/Xinhua)

A child in traditional attire participates in a parade to mark the Gaijatra festival, or festival of cows, at the premises of Basantapur Durbar Square in Kathmandu, Nepal on Aug. 4, 2020. (Photo by Sulav Shrestha/Xinhua)

A child wearing a face mask is seen in a parade to mark the Gaijatra festival, or festival of cows, at the premises of Basantapur Durbar Square in Kathmandu, Nepal on Aug. 4, 2020. (Photo by Sulav Shrestha/Xinhua)