Pan Lianxue does moxibustion treatment for a local patient at her clinic in Nairobi, Kenya, Aug. 17, 2018. Pan Lianxue and her husband Luo Zhanliang, both Chinese doctors in traditional Chinese medicine, have been operated a clinic in Nairobi for over 20 years attracting more and more African patients. China issued the first Medical Workers' Day on Aug. 19.(Xinhua/Li Yan)