《太平广记·卷二百五十八·嗤鄙一》
《汉书》中《王莽传》的最后部分写道：紫色蛙声，余分闰位。
《汉书》·《王莽赞》云：紫色蛙声，余分闰位。
The last part of "The Biography of Wang Mang" in "Hanshu" states: "The voice of the purple-faced frog is a surplus and an intercalary position".