"City Beauty" is an online buzzword, which is often used to describe a very beautiful, elegant and charming woman. If you want to go this way, you can try the following ways:

1. Respond with similar words or tone: such as "It's so beautiful", "It's a goddess", "It's so charming" and so on.

2. Respond in a humorous way: for example, "I'm going to the gym to exercise so that I can be worthy of a city beauty." "Are you saying I'm a fake city beauty?" Wait a minute.

3. Introduce other related topics: for example, "It would be great to have dinner with urban beauties" and "What are the necessary fashion items for beautiful women?" Wait a minute.

No matter which response method you choose, you should be consistent with the other party in context and language in order to make the conversation more natural and interesting.