The image was created using the letterpress process with three different printing plates (see picture gallery). It represents a gingko leaf. The gingko tree is one of the oldest plants in the world and is widespread, which is why it is also known as the world tree. In Feng Shui, these trees are considered mood lifters and also stand for strength and resilience. In the sense of ying and yang, they promote the interaction of feeling and intellect.1