One way to get around in big cities like Beijing and Shanghai is to take a taxi, but it's too expensive.
Many people like to go out by subway or light rail. They are very fast and convenient.
Now they are becoming more and more popular.
Buses are cheap, but they are very slow in rush hours.
If you want to see a city well, you can go out by bike.
However, most people prefer to get around in a downtown area on foot, because it's good for health.