In this work,I made the shape of these wood blocks to an arrows shape, on the one hand I like it to point to the outside tree. I want to find the relationship of the wood and trees and human being . That is the aim of my research.On the other hand, what I pursue in this work is to connect circle， square  and triangle  all together. They are the basic shape of the graphic. So I got circle growth rings， cubic wood blocks ,and triangle arrows. I painted the wood surface to black color except the two flanks. In my opinion, black means no life.  The wood comes from the tree,but it is not the tree any more, its identity has been changed. I kept  two flanks of each wood original color. So the audience can clearly see the growth rings. That can evoke people's memory. I put each line in the original order. You can see it by the wood grain which is hidden in the black color. I also put some of the wood which should be put in the middle of the work on the other wood.because of the angle has been changed, so the audience  can see the growth rings from different angle. That is what I want to reach.