Answer: There are the following points: 1. Wood bureau is self-generated, which belongs to the use of the tomb of water bureau to eliminate water, and is essentially the "absolute direction" of wood bureau. But the hearing is indecent, so it is called "spontaneous direction". Its principle is to borrow the water from the Water Affairs Bureau (or the official water near the dry sea, the water worn by Xin Guiguan, and the bath water of Geng You) to flow from the right and stand on its own feet from the "Yang position".
In essence, it collects Renzi's bath water, dries up the sea to grow water, and makes it flow to Ding Wei's Tomb.
2. The wood bureau is prosperous and belongs to the tomb of the fire bureau. In essence, it is the "dead direction" of the wooden bureau, but its hearing is indecent, so it is called "self-prosperous direction" Its principle is the same as above.