西城绝转身一世琉璃白
[xī chéng jué zhuăn shēn yī shì liú lí bái]
'The last turn at the west city changes one’s entire life to crystal white.' A very poetic expression suggesting a decisive turning point or a farewell, after which everything in one's world turns cold and clear like crystal - possibly referring to losing love and living a solitary yet elegant life after.