answer: Aunt Cindy introduces online shopping to #Person1#, including how to pay for online goods, how to sell second-hand cellphones, what the online virtual supermarket is, and the disadvantages of shopping online, etc. #Person1# feels excited and decides to have a try.
documents: #Person1#: Aunt Cindy, do you shop online often?
  #Person2#: Yes. It's very convenient and the price is even lower.
  #Person1#: Last week, I tried to buy some books online, but I didn't know how to pay for them?
  #Person2#: You should open an account at the online bank first. After that, you can buy anything online.
  #Person1#: Are there many things online?
  #Person2#: Sure. You can find everything all over the world. Let's check it out online!
  #Person1#: Oh, what's this? Second-hand cellphone store?
  #Person2#: Yeah, this one is very famous with a good credit among on-line customers. It's like an open free market. If you want to change your cellphone for a new one, you can sell the old one here.
  #Person1#: Really? How to do that?
  #Person2#: Take some pictures of the thing you want to sell, then upload it onto line with a brief description about it and leave your connecting number. Then your stuff will be sold by auction.
  #Person1#: That's amazing. I'd love to try it later. Oh, an on-line virtual supermarket?
  #Person2#: Let's click to check it out.
  #Person1#: Oh, I got it. It simulates the real supermarket, which makes it feel so real. Mom will love it. She loves shopping in supermarkets.
  #Person2#: No doubt about it. Shopping online will get more and more popular. It's a real revolution about people's consuming habits.
  #Person1#: Are there any disadvantages about it?
  #Person2#: It takes some time for the stuff you buy online to arrive. But I think this problem will be solved soon.