There are sound math reasons for skyscrapers topping out, mostly due to elevator capacity and the inability to effectively get people in and out of the floorspace as you go past a few hundred ft. There's no construction engineering reason you can't go taller - the Burj Khalifa, for example, is three times taller than a typical Western major city skyscraper - it just doesn't make economic sense unless you're a newly rich nation looking to prove a point.

Economic Concrete construction (what China specializes in) typically tops out at 30-40 floors, so the vast majority of buildings in Asia are that height, a sweet spot so to speak especially for residential (even in limited space HK).