In this combo photo, the left part taken by Ren Yongzhao and released on Dec. 24, 1964 shows a view of Qamdo City of southwest China's Tibet Autonomous Region; the right part is an aerial photo taken by Sun Fei on March 25, 2021 showing a view of Karub District of Qamdo City. 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)
