It's a display of strength, in my opinion. "Struggle all you want, but in the end we will have our way with you." I'm not a geopolitical expert or anything but I fully expect China to take Taiwan by force while the West is busy with Russia. I'm fairly certain that we couldn't effectively sanction both China _and_ Russia
The US is still giving out Purple Hearts medals meant for the land invasion of Japan, which was expected to be horrific in terms of casualties due to the terrain. In this context, the US actually investigated and totally gave up on the idea of a land invasion of Taiwan, because the geography is so much worse; there are very few flat beaches from which to do an amphibious D-day style landing, and all of them are a few km away from mountains from which to rain down artillery.
It's funny people think these are all random occurrences or all the doing of the CCP. During the detente, even the Dalai Lama suddenly went to the "Middle Way" and shut up for 15 years.
HK is one of my favourite cities but one thing that I do not like about HK is how its citizens of Chinese descent (not all of course) think that they are superior to people in the Mainland. They try to make the differentiation by identifying themselves as Hongkongers (香港人) and not Chinese.
When they are outside of Hong Kong and have to fill in their ethnicity on application forms etc, no country has 'Hongkonger' as an ethnicity or even nationality.
My friends of Chinese descent born in the UK with parents from HK identify their ethnicity as Chinese. I really don't understand the minds of these Hongkongers sometimes..
The CCP/PRC knows that very well so there is no point for them to allow HK to persist, especially considering that this could give ideas on the mainland ("if HK can have this, why can't we?")
(Also, no-one ever talks about Macao, but it's the same as HK)
I think the CCP’s strategy is much simpler. They don’t expect Taiwan to be annexed any time soon, they just want to quell dissent in China. I believe popular opinion among Mainlanders is that HK citizens are spoiled drama queens (negative sentiment) so a display of force is a way of showing internally that HK - once a far more prosperous part of China, that saw itself as superior/gave mainlanders an inferiority complex - is now subservient to China. Basically a demonstration that China is a rising power (internally)