say I grant the violent incursion on tibetan land as “liberation” (which I do not)

So you love slavery. Good start.

that would still leave the Sino-Indian

India dicked around, China put them to their place and the war ended in extremely amicable terms.

Sino-Vietnamese wars

There was one (1), so no "wars"(plural), a war(singular). It was a limited border conflict because Vietnam and the PRC ended on different sides of the the Sino-Soviet split.

Were they maybe not long enough?

They happened before the timframe covered by the picture. Tibet happend under Mao, as did the Sino-Indian one. The war against Vietnam happened under Deng. The timeframe covered by the pic is post-Deng. Since then the PRC did, factually, not wage any war.