转身一地琉璃碎烟花易冷终成殇
[zhuăn shēn yī dì liú lí suì yān huā yì lĕng zhōng chéng shāng]
This poetic phrase depicts a moment where everything changes rapidly. As fireworks are beautiful but quickly fade away, it expresses nostalgia and sorrow about things coming to an end suddenly.