久了就旧了

Translated as ‘With time, it gets old’. It carries the sentiment that things age and wear out, implying change due to the passage of time. This could apply to objects, friendships, memories, etc. There's a hint of melancholy but also acceptance about how everything has its lifecycle and inevitably evolves or fades with time. In another view, it may express dissatisfaction or weariness towards prolonged situations.