that is exactly why backward culture has to be kept out of China, you come here & talk about your muslim "brothers" in China as if muslims love each other soo much while in fact muslims despise each other, the internet is full of videos of muslims beheading other muslim "brothers" with rusty small knives that takes them forever to kill their "brother" while they laugh & shout Allah Akbar as if they liberated Palestine, several years ago my family bought a sheep & brought a butcher to slay it, as the goat was being slayed honestly I felt sorry for it yet muslims tell their "brothers" things like "we will slay", "we will drink yout blood" you treat each other worse than sheep yet you come here & talk about this imagenary "brotherhood" of yours, dude get real.
sure you could say that the CIA helped creat those terrorists (which is true) but you cant just dismis these terrorists by saying "they are not muslims they dont represent us", because even if they dont follow your religion in the correct way, the fact still is that their hatred for their muslim "brothers" does represent a significant portion of the muslim population.
there are so many of them that in Syria alone there where like 100k militant to the point they formed an army.
dozens of millions of muslim CIVILIANS despise other muslim "brothers" and they wish if they vanish from this earth just because they are of a different sect .
the muslim world has failed miserably in dealing with the issue of radicalism, so instead of lecturing China on how to deal with radicalism I suggest you start hoping that Pakistan would some day get its own Ataturk & reeducation camps, forget about 50$ billion.. even if China invests 500$ billion in Pakistan that would still be useless, because as long as religeous radicalism is present in Pakistan then Pakistan wont prosper no matter how much China invests in the CPEC.