he natural order and will of the universe, bestows the mandate on a just ruler. One way to show the ruler received the mandate was the annual production and distribution of the almanacs, and that almanacs accurately predicted the astronomical phenomena. An inaccurate prediction, like the failure to predict cosmic events such as eclipses, became a sign of moral imperfection, a warning that the emperor's virtue was not adequate to keep him in touch with celestial rhythms. This was the reason why there were fr