What is Huangji Jingshi Shu?

The Book of Supreme World Ordering by Shao Yong (Song dynasty). A cosmological system that maps hexagrams to historical epochs through a 129,600-year cycle (元會運世). Each year within a 60-year cycle receives a specific hexagram via the Fu Xi binary sequence. Shao Yong's system is theoretical and cosmological, distinct from the operational Plum Blossom Numerology also attributed to him.