answer: #Person2# suggests taking the subway because it's faster and more convenient. #Person2# tells #Person1# how to pay for the fare and take it.
documents: #Person1#: Let's go to WAngFuJing by bus.
  #Person2#: Better take the subway. It's faster and more convenient.
  #Person1#: Okay. It will be a new experience for me.
  #Person2#: We have a rather comprehensive subway system here. we can get almost anywhere rather quickly on the subway. Especially at this time of a day when the traffic is heavy.
  #Person1#: where do we pay the fare?
  #Person2#: Just give the man standing there three yuan and he'll give you a token. Then you slip it into slot at the turnstile and push the turnstile to get in.
  #Person1#: Let me pay for it.
  #Person2#: Where can I get the subway Madam?
  #Person1#: Ask the worker who sells token to give you one. It's free of charge. Actually maps showing subway routes are posted at most stations.
  #Person2#: Do I have to pay additional fare to change train?
  #Person1#: No, you don't have to. Here comes the train.