It is clear enough

and our china leaders also know about it.

That is why nothing happen so far.

If you think they can do it with force, why should they wait so long? They have the military power to do it, tell me why wait?

If you are so sure US won't involve with force, why should mainland still wait?

Our china leaders are much more wise then you guys.
You guys can only talk as far as I can tell.