The current arrangement is being a de facto sovereign democratic state. A status quo that is very much not something China prefers in the long term. At some poi

The current arrangement is being a de facto sovereign democratic state. A status quo that is very much not something China prefers in the long term. At some point in the future Taiwan is either acknowledged as a sovereign nation (with embassies and no foreign claims on their territory) or it will get assimilated as the 'lost province' China considers it to be. If China didn't want to invade/assimilate/peacefully-reunite-with-a-gun-against-your-head Taiwan, it wouldn't object to it presenting itself as an independent nation, and it wouldn't have its 'One China' policy which means that other countries have to choose between them and Taiwan. If China didn't have designs on taking over Taiwan, it wouldn't impose sanctions on Lithuania for opening a Taiwanese Representative Office. Thinking that China with its Nine Dash Line (as close to an invasion as you can get) does not have designs on Taiwan is naive.