As part of the Shenzhen-Zhongshan Link, a sea-crossing transit corridor between the cities of Shenzhen and Zhongshan, a section of tunnel is being built which will be completely immersed underwater. But how do you build a 5km-tunnel under the sea?

Editor: Luo Wen

Operation: Qiu Ruiqi

Producer: Li Xin

Chief Editor: Zhang Wan

Supervisor: Wang Feizhou

As part of the Shenzhen-Zhongshan Link, a sea-crossing transit corridor between the cities of Shenzhen and Zhongshan, a section of tunnel is being built which will be completely immersed underwater. But how do you build a 5km-tunnel under the sea? Editor: Luo Wen Operation: Qiu Ruiqi Producer: Li Xin Chief Editor: Zhang Wan Supervisor: Wang Feizhou

Fantastic China 07 A Megaproject Under the Sea

CGTN Documentary, launched in 2011, is the first international documentary television channel to provide global audiences quality documentaries including real-life stories, history, arts and nature. The TV channel is currently available in 129 countries and regions in the world.

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Fantastic China 07 A Megaproject Under the Sea

Fantastic China 07 A Megaproject Under the Sea