Genuinely curious why you think this? It's been my understanding that there are strong ties between the government and the defense contractors, and the defense industry there is fairly shrouded in secrecy, making corruption easy to pull off. Do you think the Chinese government is more capable of taking an 'agile' approach to a space program than the US?
Corruption in China tends to be far and away an issue with regional and local programs, and lately there's been a serious crackdown on it. But mostly, they lack an entity like Congress that sets budgets and buys/sells votes to get projects broken up and put into lots of different districts. A big part of why SpaceX is so efficient is that everything is made in the same factory... not 50 different companies in 300 locations. Something needs to get done, it gets done. I'm not passing judgment on that, good or bad, but if there's one thing China is good at doing, its getting things done.