Was it written by someone after the Ming Dynasty?

The number of plum blossoms is one of the ancient divination methods in China. Now plum blossom heart change is another name for plum blossom easy to count. Written by Shao Yong, a Yi-ology scholar in Song Dynasty,

The Book of Changes of Plum Blossoms originated from Hanshu, which is a book of divination based on the numerology in the Book of Changes and combined with the "Xiangxue" in the Book of Changes.

Nan, a master of Chinese studies, once said that since then, no one can surpass the achievements of Yi-ology.