Closing line of Xin Qiji's (
辛弃疾, Southern Song) Lantern Festival lyric 《
青玉案·
元夕》:
众里寻他千百度,
蓦然回首,
那人却在灯火阑珊处 — 'In the crowd I sought her a thousand times; then, turning my head, there she was where the lanterns had burned low.' Wang Guowei in 《
人间词话》 made it the third and highest of his three stages of scholarly attainment.