I wonder if HK could otherwise go Chongqing with their mountains, building the city up on them, or maybe blowing them up like they did in Lanzhou? It’s nice that they don’t, though.
Most Hong Kongers agree it’s nice that they don’t. The nature parks are treasured. It’s also a false dichotomy because it’s not about “housing or nature”. There is plenty of brownfield land but in the New Territories it would be politically challenging to develop on it because it would mean buying or forcing out the owners who have rights to the land because of the legacy system of male heirs.
In parts they do: the Hong Kong Island side has housing all the way to Victoria Peak and public escalators etc to serve it. The scenery isn't quite as dramatic as Chongqing though, and it's much less dense (particularly the upper levels are luxury/heritage houses, not apartments), so no monorails zipping through buildings etc.
I’ve been up the escalators before, it doesn’t feel anything like CQ though. A lot of the mountains just don’t seem big enough or at a grade that would allow for housing all the way up (like Victoria peek or west Vancouver). They might be able to blow them up or terrace them.