Heroic Little Sisters of the Grassland(1965)

This film was made by Shanghai Animation Film Studio and is based on contemporary events in February, 1964. It’s a retelling of how Mongolian sisters Long Mei and Yurong, ages 11 and 8 respectively, successfully walked nearly 70 kilometers after having been surprised by a blizzard while grazing their father’s sheep. Both girls survived with severe frostbite.