China has planned an impressive cross-sea traffic link for a mega city that has over 100 million residents, reported Chinese state media.

为一座1亿多人口的超级城市，规划一座令人震撼的跨海连接工程，

Construction of a massive undersea tunnel that runs seven kilometres (4.3 miles) has begun.

全长7公里的地下隧道施工已经开始

The project, which is set to cost 50 billion yuan (£5.7 billion), also includes bridges and man-made islands on the busy Zhujiang River Estuary, also known as Pearl River Estuary.

The traffic link is set to connect the cities of Zhongshan and Shenzhen in southern China, near Hong Kong and Macau.

It's been planned to serve the Guangdong-Hong Kong-Macao Bay Area, which is 35 times larger than London or 71 times larger than New York City.

The project, called Shenzhong Channel (深中通道), runs 24 kilometres (15 miles) with construction both above and under the water, according to a China Daily post on Twitter.

深中通道预计耗资500亿元，是世界级超大的“桥、岛、隧、地下互通”集群工程。

深中通道全长24公里，连接中山和深圳，服务于粤港澳经济发展.粤港澳比伦敦大35倍，比纽约大71倍。

来源：三泰虎 http://www.santaihu.com/44847.html

中山

深圳

港珠澳大桥