Cloudfront is not available in China. We had to implement a small CDN for a large ecommerce website. What we did was use geo-ip route 53 and route chinese ips to load balanced nginx instances caching the cloudfront cdn.

What compounds the problem with China is that the chinese are very much used to requesting an english language variant of the webstore as its often cheaper. This circumvents the CDN however as all stateful requests are routed to foreign servers making their experience really slow.

Also there's the chinese web license process that you have to go through to even host a website in china.