Who is earlier, Liu Ren or Liu Yao?

According to the current historical records, Liuyi was earlier, but Liuyi originated from the Book of Changes, so it is impossible to verify whether Liuyi was produced in the Zhou Dynasty or the Spring and Autumn Period, and it is generally believed that it appeared in the Spring and Autumn Period.

The prediction of six hexagrams and eight diagrams originated from the Zhou Dynasty. Six hexagrams means that the forecaster puts three copper coins in his hand, clasps his hands, thinks about what he has measured, melts the measured information in the copper coins, shakes his hands together, puts them in the divinatory disc, and throws them six times to form a divinatory symbol. Ibu, then change. Combine the language of the Book of Changes with the dead branches of time. And judge the development process and result of things. Six hexagrams is one of the most popular folk prediction methods, and its changes include the change of plum blossom, the lesson of Guanyin and the breaking of Wang Wen's sixty-four hexagrams. It's much simpler than the authentic six-point method. Liu Yi said, "One yin and one yang are quiet, and I am happy to know my destiny, so I don't worry."

In China's artistic mathematics, six roots originated from the Book of Changes (the Book of Changes originated from Oracle Bone Inscriptions's divination practice). Probably at the end of the Shang Dynasty, Zhou Wenwang wrote Sixty-four Guas. Later in the Spring and Autumn Period, Confucius' disciples inherited Confucius' discovery of Zhouyi and wrote Yi Zhuan. Among the "three-body" in which Qin Shihuang burned books and buried Confucianism, Liu Ren was the first, and his mathematicians praised him as the first of the three-body. Judging from many related records in the Spring and Autumn Annals of Wu Yue, Yuejueshu and Biography of Qiuci, Liuren appeared later than Zhouyi. But not later than the late spring and autumn. So far, many Liu Ren disks have been unearthed in China. According to archaeological research, most of them belong to the Han Dynasty.

The following website is very detailed and may be helpful to the landlord:

Liu Yi /view/267 122.htm

Liu Ren /view/2002582.htm