and nobody stopped em and they haven't withdrawn yet. I don't think they have a lot of shame (I mean, look at all the piracy and copyright violating and human rights abuses that nobody is able to stop them from doing). They'll eat Hong Kong and deal with whatever slings and arrows the US/UN throws their way... laughing all the way to the bank.
Hong Kong sowing seeds of rebellion is their ownly hope for long term change from within. The poision pill method of governmental overthrow.