Thanks for the reply!
With VPN I think it will work. But I'm afraid even so, the problem stays, as most users here don't have vpn.
(Running Bitcoin here without vpn is ok. )
I noticed Tor is necessity for bitsquare for solving connectivity issues and enhancing privacy.
I guess that would prevent a vast number of users in China from using bitsquare.
For example we CAN use VPN or some proxy to access google, youtube and twitter.
But most ppl just choose to use local websites (baidu, youku and weibo), even with inferior quality.
Here is a report on bitsquare in Chinese (translated from English).
In the translator's note on top of the article, it says, and I translate back:
(...advantages of bitsquare...) The flaw/disadvantage of bitsquare is that the built-in tor functions caused the software very hard to connect to the network, and lead to users unable to run the client.