What are the disadvantages of rockery?

Rockery is an artificial landscape. If we want to talk about its shortcomings, rockery contains less mud and can be used for the cultivation of simple small-scale vegetation, but cannot be used for the cultivation of large-scale vegetation. From the perspective of Feng Shui, some places are not suitable for making rockeries and cannot be forced to be made, or those who can make rockeries must consider the shape of the rockery. There is a saying that the design of the rockery is too sharp and will bring evil spirits. (This view is for reference only. Believe in science, please do not be superstitious)