Aerial photo taken on Sept. 24, 2020 shows a relocation site for poverty alleviation in Gonggar County, Shannan City of southwest China's Tibet Autonomous Region. 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/Sun Fei)
