What are the hexagrams in Zhouyi?

San Qian's trick should be to throw three coppers six times.

Comparing the four arrangements of Yao Ci, Zi Zi Tu, Zi Tu Tu, Zi Zi Zi and Tu Tu Tu, we can see that Yin Ji "-"Yang Ji "-"are drawn from bottom to top, forming a hexagram six times, in which each character changes with the graph, and the difference between them is drawn with X, and the changing hexagram corresponds to the changing hexagram.