. . . of course, the Chinese government enforcing Chinese as the language of the whole empire is based on the premise that if these unruly people can be acculturated, they can become part of the larger whole. When they check in at the door, their culture (like the Kyrgyz Epic of Manas) is denatured and assigned to one of China’s many back rooms as part of the general bric-à-brac. The Mongols, the Manchus, and others brought their own culture into China, but once they lost control their culture was also assigned to the bric-à-brac and the old Han culture was put back in pride of place, purified as much as possible to maintain the idea that the civilisation is still grounded in those ancient ancestors.
(From a correspondent who wishes to maintain anonymity)