Collection of Ci Ci·Chapter 9·Full Text

The sky is one and the earth is two; the sky is three and the earth is four; the sky is five and the earth is six; the sky is seven and the earth is eight; the sky is nine and the earth is ten. The number of heaven is five, the number of earth is five, and the five figures are in harmony with each other; the number of heaven is fifty, and the number of earth is thirty, and the number of heaven and earth is fifty, which is why ghosts and gods can change.
The number of Dayan is fifty, and its use is ninety-nine out of forty. Divide it into two to resemble two, hang one to resemble three, cut it into four to resemble the four o'clock, and the strange thing is that it is cut to resemble a leap; when it is five years old, there is a leap, so it is cut again and then hung.
"Qian" has six strategies out of two hundred and ten, "Kun" has four strategies out of one hundred and forty, and every three hundred and sixty is the current day. The strategies of the two articles amount to one thousand five hundred and twenty, which should be regarded as the number of all things. Therefore, the four camps form the "Yi", eight out of ten of them become hexagrams, and trigrams become small ones. Introduce it and extend it, touch it and grow it, and all the things in the world can be accomplished.
It shows the virtues of Taoism and God, so it can be used to entertain and bless the gods. Confucius said: "Those who know the way of change know what God does."