Note that he doesn't say anything concrete in his posts.  That's so he can weasel out of people calling him on his BS.  Much like a palm reader.  My hunch is if he wasn't just pulling that Dec 14 advice out of his ass, he had inside info on Chinese regulation.  He doesn't move the markets.  Governments, businesses and sentiment move markets.  But that won't stop him from making people think he does.