Have you looked into China's regulations for keeping exotic (foreign) snake species? I'm pretty sure you need a license to own a ball python in China. But don't quote me on that, maybe it's different for non-citizens.
Imo you will need to plan where to reliably get feeders for your ball python. I don't think owning snakes in China is very common like it is here.
I'm assuming you can read chinese:
http://www.vastlaw.com/dongtai/benshuo/2015/07/859.html