Chinese apartment towers are mostly limited to around 30 stories using low skilled labor concrete construction techniques that aims to employ as much rural migrant workers as possible, India is the same. Incidentally, such 30 story apartment blocks are significant exports to the Middle East and Singapore that heavily use Indian and Chinese labor.

But I’m not sure China is a good model for North America, they have a lot of density but an even worse property bubble, many bought apartments aren’t even renovated to be rented out (so actual density is much less than the capacity of these buildings). Such speculation was exported to Vancouver as well.