浮光散去昔年已是沧桑含情脉脉回眸却是断肠
[fú guāng sàn qù xī nián yĭ shì cāng sāng hán qíng mài mài huí móu què shì duàn cháng]
A poetic expression describing fleeting light fading away and how much time has changed everything. The affection filled gaze upon looking back only causes unbearable pain and nostalgia over lost love and youthful days.