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. 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/Long Lei)