The world’s longest sea crossing has been opened in China after nine years of construction, connecting Hong Kong and Macau to the mainland.

Chinese President Xi Jinping inaugurated the 55 kilometre Hong Kong-Zhuhai-Macau (Ju-Hai) Bridge on Tuesday, set to cut the commuting time between the three cities. 

A Chinese official Han Zheng says the bridge will help Hong Kong and Macau become more integrated with mainland China.