Zhang Jun, China's permanent representative to the UN, addresses the UN General Assembly's high-level meeting commemorating the 30th anniversary of the adoption of the Convention on the Rights of the Child (CRC) at the UN headquarters in New York, on Nov. 20, 2019. Zhang Jun on Wednesday said that fulfilling the visions stated in the UN CRC "remains an uphill battle" 30 years after the passage of the historic document. (Xinhua/Li Muzi)