The environment of Northern white cedars affect their natural features, such as roots, shapes, and leave; at the same time, the environment also provides them good quality of wood which is valuable for human beings, and give them ability to benefit the human beings around. Previous people who use them a lot are able to understand how trees are important, so they appreciate them. That is why white cedar is a scared spirits. By contrast, people today get fewer benefits from trees, so we cannot understand importance of trees. Therefore, I am not only trying to tell you how you distinguish Northern white cedar by describe their natural feature, but also pay attention to the life of living trees, about their thoughts and meanings to us.