Why are there not many attached stone bonsai?

Poor resistance to adverse natural environmental conditions. Bonsai with stones can be divided into two forms: attached roots and attached stems. Bonsai with stones is relatively simple, with small scenes and poor ability to resist harsh natural environment conditions. Because of its small basin, shallow basin, little soil, thin soil and many stones, it has no resistance to high temperature, high heat, strong sunshine, strong wind and freezing, so corresponding measures must be taken for maintenance. Tree and stone bonsai, also known as stone bonsai, is a kind of bonsai form that skillfully combines trees and rocks.