Within Chinese law at the moment, autonomous regions, of which there are a few, do have some provision for self-government and a self-say in the way they operate. It also provides, notionally within the Chinese constitution, freedom of religion and freedom of belief. I think Chinese officials will tell you, yes, we have all of that in Tibet, as long as it's in accordance with other aspects of the law. Then they may point you to the very broad notion of national security law, for example, which forbids anything resembling sedition.
I know the committee has been studying Hong Kong and the national security law there, so you have a good idea about that broad definition of national security, which in some sense will trump other provisions of the constitution and law that allow for religious freedom, for example.