My Secondary and JC have always used this park for their cross-country. lol!
Honestly speaking, I am not a big fan of this area because i feel it is too big. I prefer a smaller park which offers much more coziness and greenery. Chinese Gardens is rather sparse with trees and there are only a few monuments and special buidlings that relates to the chinese architectural concepts. It is usually way too hot without a canopy to block the sunlight. And the humidity here is constantly bad. I have no idea way but I never get the cooling sense from this area in all my 6 years of being here.
Furthermore, this place is too ulu. You have to walk quite a distance from the MRT for, really, not much of a reason at all, which is why I don't recmmend this area to be one of high interest.