China says it will take Taiwan back and that means war, so China will need allies. It is a happy coincidence for China that Russia and Iran are having battles right now.
That's an interesting way of doing sanctions. What's worse? Cutting them off completely, or changing business practices to ensure you still get their money, but they don't get the product?
Gonna need a lot more than some papers. It's unlikely China will actively try to stop the Genocide. As it completely destroys America's reputation on the global stage.
But if China wants to profile themselves as a leader in human rights they should sanction Israel.