With the United Nations marking the 75th anniversary of the signing of its charter on Friday, experts take part in an online forum on June 24, 2020. [Photo/CCTV]

Sha Zukang, a former UN undersecretary-general for economic and social affairs, takes part in an online forum on June 24, 2020. [Photo/CCTV]

With the United Nations marking the 75th anniversary of the signing of its charter on Friday, experts take part in an online forum on June 24, 2020. [Photo/CCTV]