Kindergarten children celebrate Children's Day on train from Yinchuan

An attendant introduces the way to use the doorknob to children on a train from Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, to Beijing, capital of China, May 27, 2013. Children from the kindergarten of Ningxia University visited the train and held a performance to celebrate the upcoming Children's Day. (Xinhua/Peng Zhaozhi)