In seoul, subway networks, linking most of the destinations in the central area of Seoul so walking here is very convenient. The price of cheap Metro bus equivalent, which transfer many times also. However there are also a number of inconveniences that are a few Korean announcement only ships and electronic ticket system. To buy the tickets you need to use the payment automatically, put paper money and coins into the air. Air supports English and 2 options, one is chosen according to the station name or only the destination on the map then pay.
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