Summary
Chinese President Xi Jinping reiterated in his New Year’s speech that Taiwan’s “reunification” with China is inevitable.
China has escalated military activity around Taiwan, including frequent incursions near the island and sanctions on U.S.-linked companies over arms sales to Taipei.
Taiwanese President Lai Ching-te rejected Beijing’s claims, stating Taiwan’s future can only be decided by its people.
Lai also criticized China’s restrictions on travel and education exchanges with Taiwan, calling for dignified, reciprocal relations based on goodwill and equality.
I think “invasion” would be the correct term here.
You can use both terms, there’s no contradiction.
Consider the US civil war. The Confederates were (rightfully) invaded and plenty of them still aren’t happy about it, the result was still the unification of the ‘northern’ and the ‘southern’ states.