Sky Diary: 3,000 photos record improvements to air quality in northern Chinese city of Shijiazhuang
Jul 6,2022
People's Daily Online
Wang Ruchun, a resident in Shijiazhuang, north China's Hebei Province, recorded significant improvements to the city’s air quality with 3,000 photos he took during the period from 2014 to 2021.
Editor：Zheng Bai
