In juan twenty-seven of the Zhaoming Wenxuan there is a very popular old yuefu 樂府 entitled "Yin ma Changcheng ku xing," which reads: "Green green is the riverside grass, Long long is my thoughts of the far way, ..." The author of the Zhaoming Wenxuan acclaimed under the title of the song that it is an anonymous old song. What confuses modern readers is that the title of the old song does not indicate what the content is. Most anonymous old songs of the Han dynasty derived their titles from their first lines, but this one is not the case. Before the Zhaoming Wenxuan was compiled, there were nine poets who had composed emulation of another anonymous old song "Qingqing he pan cao" 青青河畔草. But what most of them emulated is the old song considered by the Zhaoming Wenxuan as the "Yin ma Changcheng ku." All such pieces of emulation shared the same rhetoric and rhyming pattern as the latter old song. It is highly probable that the title of the old song "Yin ma Changcheng ku" should be "Qingqing he pan cao." The exact date of this misnaming cannot be ascertained.