The high-level meeting to commemorate the 75th anniversary of the United Nations(UN)was convened on September 21 and October 26.It was unprecedented that 173 heads of state and government attended the meeting via video.At the summit held on September 21,the“Declaration for the Commemoration of the 75th Anniversary of the UN”was adopted,reaffirming its commitment to sustainable development,environmental protection,peace,justice,and gender equality.The declaration emphasizes the importance of multilateralism and international cooperation.