Unless we are willing to go to war - there are no viable ways to prevent China from doing whatever they feel like in the territory they control. Even the tiny Iran and Cuba survived decades of sanctions
There is one recent-ish historical exception: the SA Apartheid regime was brought down by the West without any land invasion.
But invasion is no guarantee either; the Indian caste system, which makes apartheid look like Sunday school, survived the British occupation.
Sure but that was in a country where the ruling class was a small minority; perhaps the internal pressure was much more significant. In China the ruling class is a supermassive majority compared to the relatively tiny number of Uyghur’s.
There is one recent-ish historical exception: the SA Apartheid regime was brought down by the West without any land invasion.
But invasion is no guarantee either; the Indian caste system, which makes apartheid look like Sunday school, survived the British occupation.