Dancers perform in a dance drama at the Inner Mongolia Bureau of National Art Troupes in Hohhot, capital of north China's Inner Mongolia Autonomous Region, Nov. 15, 2018. The dance drama, based on a real story in 1964, depicts the deeds of a pair of heroic grassland sisters of the Mongolian ethnic group, who got seriously injured in their fight in a blizzard to protect commune sheep. (Xinhua/Ding Genhou)