"Invisible poverty-stricken population" has become a buzzword on the internet. It refers to people whose consumption exceeds their income.
In big cities such as Beijing, there's a group of people who spend all their money on feel-good and look-at-me things, despite not having the income to do so. Most of them spend all their wages every month, some of them even depend on credit cards for their daily consumption.
But these people are not impoverished people at all. It is their unreasonable consumption that causes their impoverished condition, because their consumption exceeds their income. They lack any sense of money management that is of great importance in people's lives.
It is reasonable for people to aspire to a better lifestyle but people should live within their means. The fact is that these people's income is not low. It is unreasonable to call them "impoverished", as they simply spend more than they earn on things they cannot afford.