The Environmental Symbol of Beijing Olympics, which was created using a calligraphic art form, is composed of human and tree-like shapes. The logo consists of the crown of a tree and the shape of a human being, which are used to create the form of a large tree reaching the sky. The image represents harmony and unity between human beings and nature. Just like swinging coloured strips that encircle and cross each other, the green lines form a luxuriant crown of a tree and recall flowers in full bloom, embodying the sustainable development of nature.