a lot of chinese using skyfire now.

I can't type chinese in skyfire...
Is there can be improved in the next version of this feature?

We are looking at improvements to support for non-Latin character sets, but we don't have a timeframe to announce.

From our corporate blog:

We have been studying how to better support users in China (local character entry, a local data center, etc.). Until we are able to deliver an enhanced product for Chinese users, we have decided to place a hold on accepting new users from China.