For a literal example of lying low you might want to visit Beijing where high rent prices have forced people to go underground.
Residents have been converting Cold War-era air raid shelters into cheap apartments.
But as Al Jazeera's Melissa Chan reports, landlords are now engaged in a fight with the government to keep their unusual properties.
Content on this website is for general information purposes only. Your comments are provided by your own free will and you take sole responsibility for any direct or indirect liability. You hereby provide us with an irrevocable, unlimited, and global license for no consideration to use, reuse, delete or publish comments, in accordance with Community Rules & Guidelines and Terms and Conditions.