Wait just one second please, has the world gone, sorry no need to finish that thought but. The PRC are brainwashing their Muslim citizens and the Taliban think they are going to be good allies? Wot the actual Frisbee?
Taliban are fairly shrewd pragmatists. Abstract ideological concerns are a rich man's luxury.
So long as the Chinese don't abduct Pashtuns or commence military adventures in Afghanistan, the Taliban don't care too much what they do in their own lands. Since China and Pakistan are pretty good pals, and Russia and China have at least tacitly agreed that they face mutual foes, they shouldn't need to do that. And as long as the Taliban keep any Uighur radical or fellow travelers from interfering in Xinjiang, they shouldn't give the Chinese reason to waltz in and wreck the place (although the PRC would likely do just that, and not bother staying).
The PRC is just buttering them up to get at the lithium ores under Afghanistan's lakes and build railroads for OBOR though.