I imagine whoever got the 99 year lease is feeling pretty pleased about it - that's basically forever as far as they can tell. On the other hand, I bet the UK in 1997 would have hoped for a longer lease on Hong Kong.
Probably not. In 1997 they were happy to court the $$ associated with opening up this huge new market of 1b+ "middle class" consumers. Id argue they still aren't sufficiently butthurt about it. The UK has sufficient grounds to reclaim HK since china has very much failed to uphold its agreement to keep hong kong democratic for at least 50 years. I guess that's why the CPC goes on gaslighting rants about "whole process…
I would love for China to have democracy, but Great Britain really doesn't have any moral high ground on the issue nor any business having anything to do with the government there.
If you think they aren't sufficiently butthurt about it, I'd counter that by saying "what can they realistically do about it?" The answer is "absolutely nothing." You want them to invade or something?
They can write a nastygram or something but any of the promises involved with the transfer really mean nothing. An analogy would be asking the next owner of your car to not play any Britney Spears on the radio. Good luck enforcing that.