A famous prophecy passed down from the Ming Dynasty, "The Song of the Baked Bun," was authored by Liu Ji, the Imperial Preceptor during the reign of the Hongwu Emperor of the Ming Dynasty, also known as Liu Bowen. It is said that Liu Ji had profound knowledge of mathematics and numerology, and folk legends claim he was a celestial being descended to earth to assist the founding emperor in establishing his great enterprise. In folk tales and literary works, he is often depicted as possessing extraordinary foresight, capable of predicting the future without divination, understanding the past and present, and even commanding wind and rain with immense supernatural powers—described as knowing "five hundred years before and five hundred years after"—a figure as divine as a celestial being.