I have been to everything mentioned upstairs. To say free, I know that there is one between No.3 Middle School and the library. It's in front of Kaka Fitness in the west of Chemical Fiber Club Station. There is no money at all. The only thing asking for money is the sports commission.

If you want to go to Kaka, you can take bus No.456 or bus No.3 in Xincheng.

Wish: good health O(∩_∩)O~