Medical staff prepare to perform an operation to a cataract patient at the People's Hospital in Ar Horqin Banner of Chifeng, north China's Inner Mongolia Autonomous Region, June 15, 2020. Chifeng welcomed a public benefit activity from June 13 to 15, which includes providing local cataract patients with free surgeries to regain sight and conducting vision screening to local adolescents. (Xinhua/Lian Zhen)
