Observation of mountains by the ancients:
古人看山：
When viewed from the side, they appear as ridges; from an angle, they turn into peaks. From near or far, high or low, each perspective differs.
橫看成嶺側成峰，遠近高低各不同。
Observation of mountains by the moderns:
今人看山：
There are minerals in the mountains.
山上有礦
In this depiction of the Stone Forest, there exists a low before the high, both indispensable.
此畫石林，前有低，才有高，缺一不可