China has been known to block WordPress.com blogs, and there is nothing that we can do about this. As a workaround, you can try using a VPN or proxy to access the blog. The following links provide some options that you may be able to explore and/or use:
https://www.intl-alliance.com/store/index.php?main_page=index&cPath=1_119
https://www.torproject.org/
We have also heard that some users have had luck simply by using Opera Turbo:
http://www.opera.com/browser/turbo/
I really hope this helps and you'll find a way to access/update your blog!