Via Glutter, TypePad owner Six Apart has confirmed the blocking of TypePad sites in China and advises:

We’ve become aware that all TypePad sites are currently being blocked in China, similar to the block put in place last year. We discovered the blocking in the same way that most of our TypePad members did, by hearing about it from readers in China.
Until access is restored, the only recommendations we can make for
workarounds is to use any web proxies which are available for routing
requests to TypePad through another site. In addition, third-party
services for processing syndication feeds aren’t currently being
blocked, so if you’re using another service to enhance your
TypePad-published XML feed, it’s likely the feed will still be
available to audiences in China.
To be clear, the availability of TypePad-powered sites in China
isn’t something we have control over, but we do hope that full access
is restored quickly, as it was last year.