Been obliterated by Denise Minger. I don't think anyone has torn into it as much as she has. Read her posts from the beginning for the full effect. www.rawfoodsos.com
Long story short, it's full of bad science.
It's junk science, http://rawfoodsos.com/the-china-study/
I haven't read this article yet, however Dr. T. Colin Campbell & Dr. Loren Cordain had a debate on the matter of protein. You can find a summary of the debate here.
Some really good takedowns on the web regarding TCS... here is one http://feastingonfitness.blogspot.com/2010/04/study-everyone-talks-about-part-1.html
I like Ned Kock's series.
You might as well be reading a book about the Ozone layer hole or flat earth. Bad science is bad science.
Michael Eades and Joseph Mercola have responded to all the China Study Hoopla
Another good one http://rawfoodsos.com/2010/07/07/the-china-study-fact-or-fallac/