As others have pointed out, the (regional) expectation may be that the subject is living at home with their parents (rent / utilities), that there's state-provided healthcare and education (debt). At this income level you might not be paying much income tax, either.
~30% of my post-tax take-home goes to rent, which is pretty typical in the US. If I didn't have to pay that, I'm sure I could save a bunch more!
In Hong Kong, most people don't leave home till they marry.