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       The Hainan East Ring Railway is the "No. 1 Project" in the history of Hainan Island’s transportation. It is an important part of Hainan’s railway network. Together with the Hainan West Ring Railway, it forms the Hainan Roundabout Railway, which plays an important role in the transportation, economic and cultural exchanges of Hainan Island. It makes Hainan’s transportation more reasonable and scientific, and ends the long history of no railways on the eastern coast of Hainan.