Some feng shui designs are in "architecture, engineering"
There are many of these two categories, so far we haven't seen a single "metaphysical" classification.
If you can basically find it in the library and buy it in the market, there are more night markets and stalls. However, this kind of book is prone to piracy mistakes. Without the guidance of the master, it is difficult for you to find out that the flowers on the book are wrong. It is recommended to go to some large bookstores, all of which are sold.