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 marks its first Medical Workers' Day on Aug. 19, 2018. (Xinhua/Chen Bin)

Doctor Liang Chunrong makes his way up a sand dune in Arxiang Township of Zhangwu County, Fuxin, northeast China's Liaoning Province, Jan. 25, 2018. Liang has been a doctor here for over 20 years.  (Xinhua/Long Lei)

Doctor Li Shaoyou rows a boat on his way to a patient's home in Mudundao Village of Bancheng Township, Sihong County, east China's Jiangsu Province, June 27, 2018. Li has been offering medical services to fishermen around the Hongze Lake for more than three decades. (Xinhua/Ji Chunpeng)

Doctor Sun Qingyong (R) gives a patient intravenous injection at a clinic in Shaluo Village of Guanghuojie Township in Ningshan County, Ankang, northwest China's Shaanxi Province, Aug. 15, 2018. Sun became paraplegic in a traffic accident 22 years ago. He soon started offering medical treatment to his fellow villagers on a wheelchair. (Xinhua/Liu Xiao)

Doctor Liang Chunrong treats patients in Arxiang Township of Zhangwu County, Fuxin, northeast China's Liaoning Province, Jan. 25, 2018. Liang has been a doctor here for over 20 years. (Xinhua/Li Gang)