The simplest feng shui killing array
For example, the land of Arctic soil; A desert without water; Land where the sea is on fire;
It's also very simple to make a Feng Shui killing array. If you make a completely closed basement, it will soon form a place where the wind dies. Of course, strictly speaking, these only belong to the "grid" in the feng shui pattern, and they can't reach the level of "bureau". But it's enough to meet your requirements.
Killing people is illegal. From the perspective of feng shui, killing causes and effects, and then you have to pay the price. I think you'd better not think about it.
The real geomantic world, at most, is to break each other's good luck and let them slowly lose it. No one dares to kill people with feng shui unless they want to live. Because feng shui kills people, he will also be killed by feng shui. In the novel, this is not true. Still have to do more good deeds, people are naturally good, and natural killing is also auspicious.