What is the empty fly xuan star sent feng shui?

Empty fly xuan star also called purple Bai Fei star, evolved in the shu jiugong order.It by the day after tomorrow bagua azimuth distribution of nine star, in the middle house with eight house five grams of relations to judge good or ill luck.

Its focus is paying attention of failure, namely time and cycle of the movement of the heavenly bodies caused by the rise and fall of things.Will things sorted by one to nine, the rise and fall of the order cycle, and then corresponding nine star birth control can effectively judge the good or ill luck.

The pie is one of the important branches combines astrology and feng shui.