They must already have many.
What the US is doing, with this, with HK riots before, they are playing 7's and 8's and acting like they are Aces and Face Cards.
It's great for domestic consumption, but realistically meaningless.
Even if they landed Nancy Pelosi, Kelly Craft, or whoever short of Sec. State/VP/POTUS, it won't stop the Chinese economy from growing. It won't stop the deepening of ties between mainland and Taiwan. It won't stop the development of the PLA.
So they will just push the envelope with this nonsense posturing. It's all they have.