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The gymnasium is opposite Jiatianxia Square, facing south. Isn't there an intersection with traffic lights? The square is southwest of the intersection, and the swimming pool is northwest. Go south from the intersection about three or four hundred meters! Whether outdoors or indoors.
As for the price, adults are 15 yuan, and children and students with student ID cards (except graduate students) seem to be 5 yuan or 6 yuan every time. If you go there often, you can get a card. There are several discounts. You can ask again when you get there.
I know I can get to that door at 204. As for stopping, I forgot, but it was obviously visible. Just pay attention when you arrive at the station.
And 16 or 32, which seems to be accessible. I hope I can help you.
★PS: If you are a student, remember to bring your student ID card, which will be cheaper.