[speaker001:] Let 's go to Wangfujing by bus.
[speaker002:] Better take the subway. It 's faster, and more convenient.
[speaker001:] En, where do we pay the fares?
[speaker002:] Just go to the ticket office in the subway.
[speaker001:] Do I have to pay an additional fare to change trains?
[speaker002:] No, you don 't have to. Here comes the train. Be careful! Subway doors open and close automatically.