My Japanese client offices in Japan and China which connect to a single instance of the CRM.

Our Japan office has no problem in accessing our account and can work with no speed or stability issues.

But our office in China has problems accessing zoho. I read that baihui is the Chinese partner and we need to use an account there which is completely different from the zoho.com instance. I don't want to migrate our account from zoho to baihui. 

So what is the best solution for this type of scenario. Can i setup a AWS VPN and then connect Chinese users via the VPN to zoho, can anyone throw some light whether that works or thats not the way to go.

thank you.