And in case it isn't clear: the only proper attitude to this kind of bullying from the likes of dictatorial regimes is Eff 'em.
China are only trying to bully everyone into helping propagate a lie. The fact is that they invaded the country of Tibet in living memory and it's leader still lives in exile. It was nothing but a territorial land and water resources grab. And they have been working on cultural genocide ever since, starting with burning monastaries within the first week of the invasion, and continuing with in-migration of Chinese to swamp the traditional culture, and kidnapping Tibet's religious leaders.
We may not be able to force their hand, but every company and person can refuse to participate in their lying charade. (and just to be clear, my beef is with the CCP, not the people of China, who are largely just as subject to the unjust govt)