Is Yuan Tiangang, a theologian in Tang Dynasty, accurate in fortune-telling?

Yuan Tiangang sages are not theologians, but they can be called astrologers, Ibrahimovic or magicians. This person and Li are also called two immortals, who can understand the mystery of yin and yang of heaven and earth and are unpredictable.

The so-called fortune-telling method is called Yuan Tiangang's "physiognomy", which is a fallacy circulating among the people, but the real formula is only in the hands of future generations, not the "addition and subtraction arithmetic" contained in the almanac.