A student's parent (L) signs after receiving textbooks at the entrance of a community in Yinchuan, northwest China's Ningxia Hui Autonomous Region, Feb. 12, 2020. The Yichuan branch of China Post Group Co., Ltd. in coordination with local schools has launched a textbook delivery service in the city to make sure students receive textbooks of the new semester for the online education. (Xinhua/Feng Kaihua)
