CCP runs everything from top to the bottom and if they don't they just make it so when they want. CCP Having absolute power with nothing to stop them from doing what they want and it is extremely beneficial in a situation like that. Then take away human rights and lack of empathy and things can happen in the blink of an eye in times of desperation. As for it not spreading to major Chinese cities, i believe that's just a case of under reporting and again a lack of empathy and not caring about people for what they see as the greater good.
