In this combo photo, the upper part taken by Cheng Xi shows children riding on a merry-go-round at a kindergarten in Xigaze in the 1980s; and the lower part taken by Zhang Rufeng on Aug. 9, 2021 shows a view of an amusement park in Lhasa, 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)
