If you have a citizen card (social security) or no citizen card, go to the community to get a fitness card with a temporary residence permit. You can use the school's standard sports ground at the designated school within the specified time. Weekend holidays and between 18: 30-2 1: 00 every day. No charge.
If it is near Sandun, there is a basketball court in Jihong Park, which can be used all day. Almost, the cement floor is not particularly standardized.