show ad China plans its first undersea high-speed railway tunnel at 10 miles long * Passage is part of a new £4.5 billion railway project in Zhejiang, -- comments China is planning to build its first undersea high-speed railway tunnel. -- Beijing. The underwater high-speed railway is part of a new 40 billion yuan (£4.5 billion) train line, the Yong-Zhou Railway. It is set to connect the cities of Ningbo and Zhoushan in Zhejiang province. China is planning to build a tunnel under the East Sea for high-speed trains (file photo) China is planning to build a tunnel under the East Sea for high-speed trains (file photo) China is planning to build a tunnel under the East Sea for high-speed trains (file photo) The passage will be 16.2 kilometres (10 miles) long and trains will -- The Yong-Zhou Railway is set to be a rail-road project, which will facilitate high-speed trains as well as vehicles, according to Zhejiang News citing a statement from the Ningbo government. -- underwater railway tunnel. China has more than two-thirds of the world's high-speed railways Passengers board a 'Fuxing' high speed bullet train on Beijing-Shanghai high speed railway line before it leaves the Cangnan railway station on November 20, 2017 Passengers board a 'Fuxing' high speed bullet train on Beijing-Shanghai high speed railway line before it leaves the Cangnan railway station on November 20, 2017 Passengers board a 'Fuxing' high speed bullet train on Beijing-Shanghai high speed railway line before it leaves the Cangnan railway station on November 20, 2017 China has the world's largest high-speed railway network, which measures a staggering 35,000 kilometres (21,747 miles) as of 2019, according to China Central Television Station. -- Nearly 30,000 kilometres (18,641 miles) of tracks, more than half of which are high-speed rail, were complete at a total cost of 3.9 trillion yuan (£428 billion). The country's newest high-speed train model is 'Fuxing', or 'Rejuvenation', which runs at a speed of 350 kilometres (217 miles) an hour. -- Share or comment on this article: China plans first undersea tunnel for high-speed trains at 10 miles long *