>China knows all the economic levers to cause lots of pain to the US (eg selling t-bills)
China has been divesting itself of treasuries for a long time: a) because they create coupling between the two economies, and b) they know that the US will simply freeze them if China invades Taiwan. If China dumped all of its treasuries at once, it would hurt a little, but not that much.
A small amount of selling T-bills from bond vigilantes already caused Trump to drastically pull back his plan once. If a holder as large as China started a big dump of T-bills it would cause a massive financial disaster. China would feel some pain too, but the US having far higher interest rates as it rolls over new debt into new T-bills would be extremely difficult for us. We are at economic Mutually Assured Destruction levels this is still a lever that China can pull that is in their favor.
China has been divesting itself of treasuries for a long time: a) because they create coupling between the two economies, and b) they know that the US will simply freeze them if China invades Taiwan. If China dumped all of its treasuries at once, it would hurt a little, but not that much.