Blam! Or if you’re in a pinch and need to save some coin, there are a number of shops around town that offer different styles of bikes for around 3000元 of a reasonable quality. Decathlon in fact offers some ok bikes for the money. Just be sure to have a co-worker or friend who can help translate.
Just don’t be a dick and buy a stolen bike. Any number of people will point you towards an area of town that is known to sell cheap used bikes and the reality is that the vast majority of these second-hands are stolen. Why support that?
Biking around is definitely a good way to get a feel for the city and is the most convenient mode of transportation (and it’s free!). It’s also one of the better ways to get outside the city (quickly) and get away from the hustle and bustle.