A member of a Hong Kong medical delegation visits Huayuan Street community health center in Nankai district, in north China's Tianjin, Sept. 23, 2019. A Hong Kong medical delegation visited Tianjin for exchange from Sept. 23 to 24. During the visit, 13 members of the delegation exchanged views with local medical associations and visited Tianjin Children's Hospital and Huayuan Street community health center in Nankai district. (Xinhua/Li Ran)