There are reports from Google Docs Help forum that people in China cannot access their Google Docs or even FeedBurner on feedburner.google.com.

Here is what the China Google Docs user said:

I guess that is a better excuse then my dog ate my homework? But seriously, this must be a router issue that is temporary and someone in China needs to open this up soon. We have seen China block many sites, including Google properties, time and time again. Sometimes they do it on purpose and sometimes it is a mistake.

Forum discussion at Google Docs Help.