As far as parents are concerned, their income is low and their lives are frugal, but they bear many burdens of life such as supporting the elderly that rich uncles and uncles are unwilling to bear.
As for their parents, they earn a lot of money and live a frugal life, but bear a lot of rich uncle Bob is not willing to bear the burden of supporting the elderly and so on,
As far as parents are concerned, they have a meager income and a frugal life, but they bear the burden of supporting the elderly, which rich uncles and uncles do not want to bear,