Wangcheng Park is a lovely place to take a break. Have a picnic, amble around the grounds or just lie on the cool grass and close your eyes for a while.
If you're planning to stick around a while in Xi Gong, Wangcheng Park is a good place to start your exploring. This recreation and green space is one of many attractions that'll keep you on the hop here. Luoyang Old Town, Luoyang Museum, and Lijing Gate are also waiting for you close by.