Gezhen, a sister-like staff, tells a story to children at the Library of Tibet Autonomous Region in Lhasa, capital of Tibet in southwest China, Aug. 2, 2015. Children enjoy fairy tales, play games and draw pictures every Sunday at the library during the summer vacation. (Xinhua/Purbu Zhaxi)

Children play at the Library of Tibet Autonomous Region in Lhasa, capital of Tibet in southwest China, Aug. 2, 2015. Children enjoy fairy tales, play games and draw pictures every Sunday at the library during the summer vacation. (Xinhua/Purbu Zhaxi)