Depending on the plan of the project we offer some possibilities to return a different URL on asset requests, can you contact us at email@example.com with the project you want to do this on? This way we can forward you to the sales team and see the possibilities for your use case
our image component won’t work perfectly as it relies on the automatic resizes/optimizations provided by Imgix. So either you are going to point to a static file and always the original image/encoding to your users, or if NextJS works in the server there you might be able to leverage the Next Image component, that does something similar to what we do and save the cached versions on a local folder. Maybe you can do something clever there and maintain a cache in China?