Volunteer teacher Wu Tongyu plays with pupils at Bohai Primary School in Dagcanglhamo Township, Luqu County of Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Nov. 17, 2017. Since 2015, 400 college students from universities within Gansu province have been dispatched to poor and ethnic regions as volunteer teachers in Gansu every year, which have contributed to the development of all-round education in these regions. (Xinhua/Liu Jinhai)
