Six hexagrams are broken, and each hexagram is regarded as four images, namely, Taiyin, Shaoyang, Shaoyin and Sun; Change every six or nine years, explain for good luck,

There is a saying that there is too little money for divination, and the moon becomes less sunny and the sun becomes less cloudy. Only "too" becomes less, and "less" cannot become "too". Or the sun is nine, the lunar calendar is six, the yang rises and the yin shrinks, eight is less yin, and seven is less yang. Not every hexagram is considered as four elephants.