百尺凉心千丈封情
[băi chĭ liáng xīn qiān zhàng fēng qíng]
The phrase 'Bai Chi Liang Xin Qian Zhang Feng Qing' metaphorically expresses extreme emotional isolation. 'A hundred feet of cool heart and a thousand feet sealing off feelings' signifies profound loneliness or a reluctance to let others in emotionally due to past wounds or personal reserve.