In you put yourself into CCP mindset the support from an outside Muslim power may possibly fuel the perception of support for possible separatism and that perception may escalate the situation.
A wide international, non-exclusively-Muslim, based response, on pure human rights grounds would possibly be a good thing. Unfortunately nobody in the world right now is interested/capable/etc. to respond to religious/ethnic/etc. cleansings on pure human rights grounds (of course there are responses when it comes to economic interests when it can be covered by human rights interests)
A wide international, non-exclusively-Muslim, based response, on pure human rights grounds would possibly be a good thing. Unfortunately nobody in the world right now is interested/capable/etc. to respond to religious/ethnic/etc. cleansings on pure human rights grounds (of course there are responses when it comes to economic interests when it can be covered by human rights interests)