The Chinese government and their acolytes have been shown to be chumps in Hong Kong.
The law to extradite people to mainland China was seen for what it was and there were
HUGE demonstrations against the bill.
The hapless leader has only just dais the bill is dead. Why she took so long to say this simply shows what a poor politician she is and that is what she is supposed to be.
Indeed I think it can be said she has NO credibility and will never have any and there will be no progress whilst she remains leader.
What the Chinese political leadership has done in a very ironical sense is wake the dragon on Hong Kong. Whilst billionaires who make their money by their communist 'connections' want closer relations with Chins most in Hong Kong do not.
What has started out as a large protest against a diabolical bill has morphed into almost a Hong Kong independence movement. There seems little likelihood of this protest falling away anytime soon.
What can the Chinese leadership do?
This is Hong Kong remember not Beijing. The political consequences both locally and internationally if Chinese armed forces marched in and started shooting would be unimaginable. The protests for example would escalate and Hong Kong would come to a standstill.
This would override anything else happening on the world stage for China.
What can they do?
I am no expert but Ii would say two things
1) Be patient. at some time the demonstration will start to fall away unless provocative action occurs.
2) Replace the hapless leader because of sickness or she wants more time with her family.