China's GDP (PPP) overtook the US in 2016. It is currently ~30% higher and will reach double by 2035. They haven't dropped bombs on foreign soil in over 40 years.
You're a bit naive if you think China is a peace loving country that wouldn't bomb the living shit out of any opposing nation if they could do so without recourse
Even now they are posturing in their "South-Chinese Sea", or as the Filipino's like to call it, the "West-Phillipine Sea". Also, Taiwan, Hong Kong...
And then we haven't even talked about how nice they are to their own citizens.
China is growing in strength and moving towards a new global world order, and the way Trump is fucking up US supremacy at the moment, China might well succeed.
Who cares about a few Uygurs, right? Or the Chinese Seas. Or Tibet and Taiwan. You can say what you want, but China is not a silver lining.