Maybe at this date & time, but I'd bet in the next 100 years there will be a non military unification. To me it seems like there hasn't been much of a fundamental change in Geo-Politics around Taiwan in a long time... and that the main reason an invasion of Taiwan is being brought up in US media is ironically because of how poorly NeoLiberalism FP went in Afghanistan.
The British ceded the main parts of Hong Kong back along with the return of New Territories under the understanding that there would be one country and two systems.
In the 70s and 80s the British government did everything Beijing asked with things like not making Hong Kongers full British citizens.
Those compromises were supposed to gain something for the people of Hong Kong after reunification with PRC.
It’s Xi that’s renegaded on that promise and refused to allow a free press or opposition politicians to stand in Hong Kong.
You’d be mad to think that this time “peaceful” unification would be anything more than “do what we say, say what we say and we won’t shoot you family”.
They do have enough military and citizens, however, who would survive the invasion but not go along quietly to justify a severe crack down as has happend dozens of times in Chinas recent (and distant) history.