to lessen the amount of money or resources one uses compared to before, particularly due to having less available
The origin of this idiom is not clear, but it likely developed from the idea of being cautious and not overreaching or attempting more than one can handle.
to continue to waste a lot of money on something that is not worth it
a project, activity, business, etc. that uses a lot of money or resources without providing any results or profit

资金黑洞, 资源黑洞

to possess a significant amount of wealth but lack good judgment or wisdom in managing it
to have a strong desire to spend money quickly or impulsively, often resulting in reckless spending habits
to use or handle something in a wasteful and careless manner
to live in a way that does not exceed one's financial limitations
