贱入人心
[jiàn rù rén xīn]
Literal meaning is ‘Cheapness gets deep into people’s hearts.’ The term '贱' (cheap/vulgar/despicable) does not always mean poor quality; it can mean something that's popular because it panders to basic or vulgar tastes or behaviors. It conveys an attitude of accepting and liking cheapness, often referring to humorous or frivolous things.