Chapter 32 mentions a tree with roots above. Can you explain this metaphor and what it represents?

In Chapter 32, the text introduces a profound philosophical metaphor to describe worldly existence, or samsara. This existence is compared to a vast tree with its roots above and its branches spreading immeasurably below. This "tree of worldly existence" is described as being filled with birth, death, and sorrow, and everything seen within it is ultimately perishable. The chapter notes that because it is subject to being cut and destroyed, it is called a tree. This imagery illustrates the transient and often painful nature of material life, which may appear pleasant from afar but causes suffering when one gets entangled in it, like thorns piercing the body. True knowledge, granted by a Guru, is needed to understand and transcend this perishable existence.