MH.Yang Could you mind to do the translation for us since your English is better than me?
I will try my best, anyone who can translate better, feel free to do it.
Basically the whole thing and the threats are the drama, that makes the world think China had been bullied by USA, so that others would think China has every right to revenge and pin China as a victim, not an aggressor. Since you won't able to stop the old hag to visit TW, unless you shoot down the plane which could trigger WW3.
As you can see, beside China had lost face, China's navy and aircrafts can now go inside Taiwan territory and conduct military exercise.