Hong Kong has a problem with properties, alright.
Extraordinary crazy idea
living in the tube will be coming true soon. I have the passion for architecture, remarkable project no doubt about that. But for my contract that all planet have a problem with rubbish and people will living into formally canalisation tubes is ... but the problem is definitely at both sites. By the way, here is link
https://www.dezeen.com/2018/01/16/opod-james-law-cybertecture-hong-kong-micro-apartments-concrete-pi....
Just I stay believe that somehow creative studios will find way how sold out the problem with rubbish, especially with plastic.