The Chinese don't give a rat's hoot about the Arabs. They attack American computer systems for obvious reasons, obvious to most of us.
The Chinese central government most certainly cares about Arabs, as they share a disputed border with several majority Muslim countries, including Pakistan and Afghanistan.
Moreover they have repressed domestic minority populations who are predominantly Muslim. The extent to which there are Islamic unification or nationalist movements (which are often tied in with movements in the middle east), the Chinese government very much does care about unrest amongst Chinese muslim populations.
There's a difference between being Arab and being Muslim. The greatest Muslim countries are not Arab (Indonesia, Turkey, Iran, Pakistan).
"Islamic unification" is by definition the opposite of "nationalist movements", and is very unlikely to happen. I can guarantee that Saudis, Pakistanis, Morrocans and Turks have way too little in common to even consider unification.
Source: I'm a non-Muslim from the Middle East.
And yeah, you're right, Arabian culture is distinct from other parts of the Muslim world, but neither are they totally disentangled either. Both the green revolution in Iran and the Egyptian revolution against Hosni Mubarak had well defined religious components for example.
Also, I'm not sure I get your last sentence either. An awful lot of revolutions in the world (Arab and otherwise) have been fueled by religion. Even in the US, religion might not have been a motivation for the War of Independance, but it had a major impact on the relationship between government and religion.
Arabs also know how to do revolutions without involving religion:
- Lebanon went through something extremely similar to the Arab Spring back in 2005. The revolution against the oppressors of the time succeeded by putting religion aside and having most parties unite. (Lebanon is a segregated mosaic of approximately 17 religions, each having more or less political power).
- Syrian resistance (or rebels, depending on your point of view) are not, despite what the media is telling you, an Islamist resistance. The leaders of the resistance have clearly repeated over and over again that they're not after the minorities, they're not trying to put Islam forward, they're simply against the Assad regime.