Hi,
I can only hint things that may be the problem:
a .cn domain that is very young..
b Few or no backlinks to the domain.
may be google just put it on the sandbox..
Ideas:
1. add a pages to your blog to make it less suspect :'Contact us", About Us. FAQ.
2. Work a litle on bulding links.
3. Submit RSS to directories
4. Social bookmark the site