A gigantic crane, which was transformed from a tanker, hoists a 6,000-ton key structure of the world's longest cross-sea bridge linking Hong Kong, Zhuhai and Macao, May 2, 2017. The wedge, 12-meter-long and weighing more than 25 Airbus A380 jets, was lowered to connect the immersed tubes of the underground tunnel of the bridge. The 55-kilometer bridge connects Zhuhai in Guangdong Province with Hong Kong and Macao. It includes a 22.9-km bridge and 6.7-km underground tunnel. (Xinhua/Liu Dawei)