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There is a railway line at Sasang Station in Busan that has been under construction for 10 years. It is the Bujeon-Masan Double-Track Electric Railway. Let's take a look at why this line has been under construction for 10 years. #Bujeon-MasanDoubleTrackElectricRail #Bujeon-MasanLine 00:00 Intro 00:31 Why is it being built? 02:16 Why is it underground? 05:09 Why is it only KTX that runs there?