Doctor He Shiying (1st R) asks a sick boy about his health in Meipo Village of Dahejia Township in the Baoan-Dongxiang-Salar Autonomous County of Jishishan, northwest China's Gansu Province, Aug. 15, 2018. He Shiying has been working here as a village-based doctor since 1966, when she was 20. A large number of medical practitioners are active in China's rural areas where health care is still underdeveloped. Under adverse working conditions, they have carried forward the humanitarian spirit and devoted themselves to the health of rural citizens. China will mark its first Medical Workers' Day on Aug. 19, 2018. (Xinhua/Chen Bin)