The image is a photograph of a sign on a window sill. The sign is written in Chinese and appears to be explaining the different types of trees and their roots. 

On the left side of the sign, there is an illustration of a wooden structure with a curved roof and a small opening at the top. The structure is divided into two sections, with the top section showing the interior of the structure and the bottom section showing a tree with its roots. The tree has a red trunk and branches, and the roots are visible on the right side.

Below the illustration, there are two smaller illustrations of trees, one with green leaves and the other with brown leaves. The illustrations are accompanied by text in both Chinese and English. The background of the image is blurred, but it seems to be a window with a view of trees outside.