When we visited China last year, our guide told us there are 5 cities in China can visit pandas, Chengdu Panda Base, Beijing Zoo, Chongqing Zoo, Guilin Seven Star Park and the Zhouzhi County in Xian. Zhouzhi is not within Xian and it needs several hours driving. The best place to visit pandas is the Chengdu Panda base, now immigrated to Bifengxia Panda Reserve Center which is not far from Chengdu city.