Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email firstname.lastname@example.org.
2 website run on different web servers under one Magento installation
Technically it is possible but you would have serious peformance issues, we can suggest a solution where the core servers are in US and secondary China based servers in Tokyo for lower latency from the same provider as have a fast interconnecting cross region infrastructure.