Chui Sai On (3rd R F), chief executive of Macao Special Administrative Region, Wang Zhimin (3rd L F), head of the Liaison Office of the Central People's Government in Macao, and Ye Dabo (2nd R F), commissioner of the Ministry of Foreign Affairs in Macao, attend a flag-raising ceremony held to celebrate the 17th anniversary of Macao's return to the motherland in Macao, south China, Dec. 20, 2016. (Photo: Xinhua/Cheong Kam Ka)
