It is delusions.The British had to handover HK because they are not giving a choice. Unless of course................The Portuguese actually had even more legitimacy to keep Macao but they decided against it. Why, it is not worth it.
The Great Britain government envisioned the possibility of extending the land lease agreement(that is one of the reasons why they didn't do much to fix the problems in HK until the late 70s and early 80s), but they didn't anticipate Deng's hardlineness. Beside as a HKer that witnessed the changes in 80s and early 90s in HK, I probably know more about this part of history than you do. The fact is it is not only the British tried to negotiate the extension of the lease but many HK businessmen also tried to negotiate with the CCP for a right to lease HK
Deng is and was never Superman from Krypton
What if the British had said take a walk?
It is merely British compulsion that they quit.
That is the sum and substance.
Go by international law.
Hong Kong was not on lease. It was in Perpetuity!
Hawaii population is not white American, nor is Guam.
But try saying it is not the US!