After China chose to ban Painkiller, the CPL had to look into whether the ban would be effective immediately or not, and apparently it will not be possible for them to run the World Tour stop. This is the entire press release:
The Ministry of Culture (which is responsible for overseeing all video games sold in China) banned Painkiller. Because of this action the CPL has now officially canceled the China World Tour stop.
Details on another Asian stop will be released early next week.
Official Announcement