《论衡·卷四·书虚篇》
说舜葬在苍梧、禹葬在会稽是事实；至于说他们因为视察诸侯防地而死，是没有根据的。
夫言舜、禹，实也；言其巡狩，虚也。
The statement that Shun was buried in Cangwu and Yu was buried in Kuaiji is factual, but stating that they died while inspecting feudal territories is inaccurate.