《明史·志·卷七》
太阳的运行有四季的差异，月亮的运行有青、白、朱、黑各二加黄道共九道的分别。
日行有四时之异，月行有九道之分。
The Sun has different seasonal variations. The Moon has different orientations in its orbit in different months. More specifically, there are two phases for blue, white, red, and black, and one phase for yellow, adding up to nine phases in total.