The history of China is a history of near constant rebellion, that is ultimately quashed by central government. They worry about rebellion, they prepare for it. the current regime was ultimately born of revolution, and any revolutionary government is
constantly paranoid about counter-revolutions, it becomes part of the DNA of the ruling class to worry about this stuff.
Combine this with food riots being the fastest and oldest way to lose control, and it's remarkable you're even asking the question. It's like someone asking if the air can even be polluted, after decades of regulation have been implemented to control it. Well, yeah... just remove the regulations and see what happens.