Aerospace exhibition marking 20th anniv. of Macao's return to motherland kicks off
Xinhua,December 16, 2019 Adjust font size:
Honored guests attend the opening ceremony of an aerospace exhibition marking the 20th anniversary of Macao's return to the motherland at Macao University of Science and Technolocy in Macao, south China, Dec. 15, 2019. (Xinhua/Cheong Kam Ka)