Volunteer teacher Wen Changhao gives a lesson on science and technology to local children in Wuying Miao Village of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region, July 28, 2020. A total of eight postgraduate students from Northwestern Polytechnical University have volunteered to Rongshui County to conduct teaching here since September 2019. China has made great achievements in poverty relief that has impressed the world, with almost 100 million people lifted out of poverty. [Photo/Xinhua]