独坐闲庭看花谢最难忘却唯君颜
[dú zuò xián tíng kàn huā xiè zuì nán wàng què wéi jūn yán]
'Sitting alone leisurely in a garden, watching flowers wilt - nothing forgotten compares to Your face.' This phrase vividly describes enjoying solitude, reminiscing about love/loss, highlighting the unforgettable features of a beloved person who was very important to them.