If it is like a sword, it can be cut, which is called evil. It doesn't matter if it's under your floor or far away.
You can put water or stones on the windowsill where you can see the building. In feng shui, it's called yelling and drinking elephants.
For example, if you sit north to south, and the north is called a seat, it is also called a mountain, and it is also called a mountain position.
South is azimuth, also called water, also called water level.
It is often said in feng shui that people in the mountains manage their finances, that is, they sit and settle down, and their wealth will be determined.
There are many mysterious terms in Feng Shui, which are mainly used to bluff people.