Shi Feiyang conferred offices upon his ministers.
First, he appointed Jinxu Nu as celestial official, responsible for measuring the waxing and waning of Yin-Yang qi and overseeing the four beginnings and eight seasonal festivals. Under him served ministers such as the Yangzheng, Yinzheng, and Chenzheng.
At Heaven Beyond Divine Mountain, the sun barely moved, but yang qi still fluctuated. In particular, shadows of the sun revolved around it. Sometimes there was one phantom image, sometimes two, and at most ten, arranged in a circle revolving around the sun at its center. The diameter of this circle also varied.
But this was merely what the eye could see. In reality, the phantom images in the outer ring were the true sun. Refraction and convergence caused by magnetic light in the atmosphere made the sun's image appear directly overhead at the zenith, no matter where the sun moved. Thus, what looked like the real sun was false, while the sun that appeared to be nothing more than a phantom image was real.
They needed to measure and track the diameter of the true sun's ecliptic and its angle to the Earth's Axis to determine its celestial orbits. The Yangzheng was put in charge of these measurements and records.
Likewise, the moon could not be seen from Heaven Beyond Divine Mountain, but it still revolved, and its pull upon the qi of the sun and earth did indeed influence the ocean tides and the changes in Yin-Yang. The Yinzheng therefore needed to determine the moon's celestial orbits from changes in yin qi and establish a lunar calendar.
The calendar established by observing the sun was the solar calendar; the one established by observing the moon was the lunar calendar. Used together, they formed a Yin-Yang calendar.
Besides the sun and moon, they also