依旧是你鹤发童颜

[yī jiù shì nĭ hè fā tóng yán]

This means 'Still You with Silver Hair but Young Face', which could imply admiration for someone's youthful appearance despite aging or wisdom.

Relation Nicknames

你年轻的发 [nĭ nián qīng de fā]
Your Youthful Hair implies a young and youthful image potentially symbolizing the fleeting beauty ...
菇凉可好人若显老 [gū liáng kĕ hăo rén ruò xiăn lăo]
Girl looks so good yet seems old May indicate admiration for a woman despite her apparent age or appearance ...