That makes no sense. Why would China want to overthrow Saudi Arabia or Dubai ? They also don't have the capability.
China, the PRC, are geared up to take the Island of Taiwan, by force if necessary . Taiwan, the ROC, being the other China.
The PRC does not hide the fact that it will take Taiwan by force if they want. They even have a law, the 2005 Anti-Secession law that clearly says that if TW declares independence, then the PRC must use military force.
Biden was clear, if the PRC invades TW, then the US will defend TW.
With Trump though, nobody knows. There is a suspicion he will do nothing. Or "make a deal".
Now, if the PRC done to TW what Trump has done in Iraq, there would be justified international uproar. Especially given that TW produces 90% of high end chips.
Japan suggested last year that they would defend TW. That has led to the lowest PRC/ Japan relations in decade. And of course if Japan got involved, there is the US/Japan defence treaty, so Trump likely would have to act.
The only western people cheering on such an event, on the PRC side, would likely just be a few stalwart Tankies such as George Galloway.
There is also stuff ongoing in the South China Sea. Mainly with the Philippines. But again, they have a defence pact with the US.
So your post really makes no sense.
Sorry for the tangent.