From EastSouthWestNorth blog:
As noted in Internal Reference Materials in China, the Chinese government officials rely strongly on Xinhua to inform them. But it is not the Xinhua reports that the masses read. Instead, there are various internal Xinhua reports known as Internal Reference Materials (内部参考资料) that are circulated within officialdom. Internal reference materials are classified a national secrets and so no one can talk about them openly.
The following story is unusual because the Fujian media launched a public attack on a report published in Xinhua Internal Reference Materials. In return, the Xinhua reporter agreed to be interviewed. [Full Text]