I can tell you now that we get hundreds of articles like that flying around Chinese bbs every year. Whenever we get articles that claim to be from another country, the article is either something we have already read (and can be found through google news) or something that's made up. Either case, it's not news worthy. There are literally hundreds of articles like this every year. Now, as for insiders, sure, those do exist. But they don't appear on Chinese military websites with this kind of title and article contents.
This is part of my effort to show new forumers what kind of links to not take seriously. In fact, I've done this very often to posts that challenger posted. You've never raised any concern over those. My guess is that it's because those ones are not related to Pakistan.