I think I finally figured out how the Communist Party deals with information control. They simply state whatever they wish were actually true as if it were true, and then bully, punish, jail, block or otherwise try to stamp out any other perspective.

So, they say "Taiwan is part of China" when it manifestly is not part of China, and they encourage an angry response to anyone who says it is not true. But other than national messaging, it seems like the State media actually does their own stories, because you often see it run a story which then gets deleted off the web site a couple hours or a day later, after the government decides what the message should be.