The song "Don't spend money" conveys an anti-trend idea, encouraging people to keep their own style and taste, not to be influenced by the trend, and not to spend too much money in pursuit of fashion. At the same time, the song also mentioned "knocking" and "digging". The former refers to the behavior of following the trend everywhere, while the latter refers to money, reminding people not to blindly follow the trend, otherwise even if they save money to buy "fashion", they will only spend all their money in the end.
Generally speaking, the song expresses the idea of not blindly pursuing the trend, keeping oneself and cherishing money, which makes people reflect on whether they have lost their self and values in the process of pursuing the trend.