鬓角斑白时间已然白驹过隙
[bìn jiăo bān bái shí jiān yĭ rán bái jū guò xì]
It describes the fleeting nature of time ('A Horse Passes Through a Crevice'), emphasizing how quickly life changes as evidenced by gray hair at the temples ('gray streaks'). Expresses reflection on aging and regret for lost youth.