千年冰山女
[qiān nián bīng shān nǚ]
The phrase can be rendered as 'a thousand-year-old iceberg girl', portraying a person who remains unmoved, indifferent, or emotionally reserved towards the outside world for an extended period of time like an old and unmelting ice mountain. In Chinese web culture, it sometimes describes someone aloof and not easily approachable, with no intention to show warmth.