From the Southern Song poet Xin Qiji
辛弃疾 's
《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. It describes the joy of suddenly spotting one’s beloved amid the Lantern Festival crowds. Wang Guowei
王国维 later cited the line as the third and highest "stage" of great achievement in his
《人间词话》.