Combo photo shows mountaineering team members walking on a snow slope at an altitude of over 7,000 meters in 1960 (up, file photo) and the equipment of Chinese surveyors on Mount Qomolangma, May 21, 2020 (bottom, photo taken by Lhagba). On May 23, 1951, the Agreement of the Central People's Government and the Local Government of Tibet on Measures for the Peaceful Liberation of Tibet (17-Article Agreement) was signed, officially proclaiming the peaceful liberation of Tibet. The year 2021 marks the 70th anniversary of the historic event. (Xinhua)
