阳光很暖可我的心很冰
[yáng guāng hĕn nuăn kĕ wŏ de xīn hĕn bīng]
This nickname contrasts warm sunshine with a cold heart. It portrays the feeling of being surrounded by warmth or happiness, but still feeling emotionally cold or isolated inside. A person may have experienced something painful that makes them unable to feel the happiness even in pleasant surroundings.