People are still buying this news? What a weak hands but no matter what they do bitcoin is still in the range of $30k, it hasn't been dropping below that. I don't know if they want to drop bitcoin below $30k or they were just eager for the bear market to show up.
Imagine if successfully made to break the strong support, we will be seeing a downward movement until it drops to where it want to stop. It's basically cleaning those weak-hands who can't hodl.
China is just a trigger and the whales are trying to manipulate the market using it. Individual users (especially the relatively inexperienced ones) are vulnerable to FUD and panic selling. The whales are using this opportunity to make these users dump their coins at cheap levels. And at the same time, they are accumulating coins without making much of a noise. The situation is similar to what we had in mid-2017, a few months before the crazy bull run took Bitcoin to an ATH level of $20,000 per coin.