Doctors Zhai Dalong (L) and Wang Cuihong (R) measure blood pressure for a patient in Xudi Village of Daming County in Handan, north China's Hebei Province, Aug. 16, 2018. Zhai and Wang are husband and wife. 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 Worker's Day on Aug. 19, 2018. (Xinhua/Wang Xiao)?