The West must really have a stranglehold on the message, because I've searched and searched for that complete quote, and the only result that comes up is this very comment that you've made.[1]

> "Chinese people don’t attack other Chinese people. We are willing to use the greatest sincerity and expend the greatest hard work to strive for the prospect of peaceful reunification."

According to their words, China strives for peaceful unification, but there's little chance that can be achieved. Taiwanese people overwhelmingly reject unification, only 7.4% of the population prefer unification now or anytime in the future. The predominant preferences are 'status quo' and 'status quo but move toward independence'.[2] A vanishingly tiny minority (2.8%) identify themselves as Chinese, and they really are: Boomer Chinese refugees that fled to Taiwan after they lost the civil war. In decades past they were more influential as they essentially were a single-party occupational government thrust onto a people that didn't speak Chinese and hadn't been under "Chinese" (neither ROC nor PRC) governance since the Qing Dynasty. But as they die off, the vast, and growing, majority (62.3%) identify as Taiwanese, not Chinese, not both, just Taiwanese.[3]

> "But if separatist forces for 'Taiwan independence' provoke us, force our hand or even cross the red line, we will be compelled to take resolute measures."

That huge majority would most likely vote for independence in a referendum, except for the threat of invasion. The Chinese propaganda quoted above would have you believe that "separatist forces" are some radical minority, or outside agitators, but in fact they are they overwhelming majority of Taiwanese. They begrudgingly choose to maintain the status quo and continue to work slowly towards independence by forming stronger ties with other countries, asserting national identity, and decoupling their economy from China, rather than immediately declaring independence, because that would cross the "red line" and trigger "resolute measures." Do you sincerely believe that the Chinese "resolute measures" are not war? This isn't just quoting Western propaganda. I live here and talk to people every day. Practically no one likes China or wants to unify with then. The 'status quo' people I meet typically have two reasons: they enjoy the freedom of living in a liberal democracy and fear they will lose it if they insist, so it's better to quietly enjoy it, OR, they have economic interests in maintaining the status quo. That is, they are in business that benefits from cheap Chinese labor, or they sell into the massive Chinese market. I've never met anyone that didn't think the "resolute measures" were anything short of launching missiles.

> China is essentially pacifist. And it’s not just their politics; it’s how Chinese - the actual people - feel. Invading anyone just isn’t their thing.

This is nothing more than orientalism. Chinese are people, like other people, not a mythical enlightened race entirely different from everyone else on the planet. They commit war and conquer territory just like anyone else. You can call anything "internal" by fluffing up a story about inalienable, historical rights to it. In fact, their claims to Taiwan are not very compelling. The only time Taiwan and China were unified was for ~4 years after Japanese surrender during the civil war, or under the Qing. The Chinese themselves considered the Qing to be a foreign occupation of Tatars, so you could say that Taiwan and China were co-occupied. Before the Qing administered the coastal areas, a Ming renegade established a kingdom that ruled present-day Tainan for 20 years. He had fled the Mainland after the fall of the Ming to the Qing, and hope to restore the Ming (a weird echo of history with today's PRC corresponding to Qing and ROC to Ming). Before any Chinese claimed anything on the island, the Dutch and the Spanish ruled Formosa. Before them, aboriginals had been here for god knows how long, and still are.

The fact is, Taiwan is an important strategic possession for China to project its power, it's an important buffer for Japan (with who the Chinese have shared a millennium of conflict, regardless of ideology or government), and they'll make up whatever historical justification they can to support their claim. It's no better than Russian claims of protecting ethnic Russians in every country in Eastern Europe, or German claims to Sudetenland.

[1]: https://www.google.com/search?q=%22We+do+not+promise+to+reno...

[2]: https://esc.nccu.edu.tw/PageDoc/Detail?fid=7801&id=6963

[3]: https://esc.nccu.edu.tw/PageDoc/Detail?fid=7800&id=6961