A handover ceremony is held at the Macao border zone building on the artificial island of the Hong Kong-Zhuhai-Macao Bridge, south China, March 15, 2018. The Macao border zone of the world's longest sea bridge connecting Hong Kong, Zhuhai and Macao was officially handed over to Macao on Thursday, Macao's Government Spokesperson's Office said in a statement. (Xinhua)