《后汉书·列传·李固列传》
回忆汉朝兴起以来，三百多年，贤圣相继出现，十又八个君主。
实以汉兴以来，三百馀年，贤圣相继，十有八主。
Recalling the rise of the Han dynasty onwards, for more than three hundred years, sages and the holy have appeared one after another, and eighteen of them have become emperors.