开水冷却成冰冷
[kāi shuĭ lĕng què chéng bīng lĕng]
This online name, 'Boiling water turned to ice cold', symbolizes a dramatic and complete transformation of emotions, from extreme heat or passion to absolute coolness or detachment. It can also imply resilience, where one has gone through fiery times but now remains calm and unflappable.