烟波成霜
[yān bō chéng shuāng]
Means 'foggy waves turn to frost' - a picturesque phrase describing how ethereal water mists and mist-covered surfaces gradually solidify into icy crystals as dawn approaches or winter sets in. Metaphorically, it can allude to cold-heartedness resulting from life experiences, fading of warmth over time or even a process from dynamism into static stasis.