For reference:
https://en.wikipedia.org/wiki/Sinicization_of_Tibet
https://en.wikipedia.org/wiki/Xinjiang_internment_camps
Simple. China has a UNSC seat, Taiwan/Ukraine/Palestine do not.
"Xinjiang has not experienced a terrorist attack since December 2016, officials claimed the camps have prevented violence."
Interesting.
For reference:
https://en.wikipedia.org/wiki/Sinicization_of_Tibet
https://en.wikipedia.org/wiki/Xinjiang_internment_camps