Things in China were planned by large investors. They used the news to dump huge amounts of their coins and took huge profits. An they were not Chinese, dumping started to happen when Chinese investors were already in bed. It was probably American investors that started it. Then on 15 September the coins were cheap enough for them to reinvest, so they reinvested their profits. And I expect China will probably soon regulate exchanges and those that get certified will reopen. And the news will drive price of the whales' investment to the moon. That's how things work behind the scenes.
With news from Korea we only got bad news, but there are no big investors willing to dump their coins yet, because they haven't profited enough since 15 September. That's why bad news have no effect this time. It will probably take new all time high for BTC before they're content with the profits enough to deliberately crash the market again.
China planned the banning and might as well the reaaccepting of it once finalized and get ehat they wanted. I don't know yet why Korea came out on this idea, will read some article, but it seems no effect for now