Why does Wei Zi itch?

This is a stress reaction of plants, just like human knee jumping.

Its function is to drive away natural enemies and play a protective role.

It is also a unique stress expression of a species that survives by survival of the fittest in nature.

The itch tree is afraid of itching because of its own plant structure. Lagerstroemia indica, also known as the "tree of light skin", has a particularly hard xylem, and fibrous tubular structures such as conduits and sieve tubes in plants have similar functions in human nerve conduction. When people or livestock touch it, it will feel the effect of external force on the tree, which will make the tree vibrate and make a sound. The principle of its sound is not because it is really ticklish, but because of its specific gravity. If Lagerstroemia indica is dug out and weighed, it will be found that the weight ratio of the tree is just the opposite to that of ordinary trees. It has a light root and a heavy crown. This is why trees vibrate when stimulated.