In the divination of six hexagrams, Sunlight and Xunsky often appear, so what is the difference between them? How to use it specifically!

The year, month and day of the survey are heavenly stems and earthly branches from A to D, and the two earthly branches after D are generally used for the daily value, so the survey near the daily value is called the sky, and the things people use in the survey will not appear until it is empty or empty. This is a common usage. ...