云袖千吟一曲惊鸿
[yún xiù qiān yín yī qŭ jīng hóng]
It’s quite poetic, meaning 'A thousand laments from flowing sleeves can surprise like a sudden beautiful apparition' which might denote someone whose artistic expressions (sleeves movements often depicted dancing in traditional Chinese performances) are incredibly moving, capable of evoking awe and admiration. The beauty is in its transient nature.