This is an interactive work about the enviroment, which to present the idea of "Beautiful lies in harmony. Nature comes from natural". Every sound that make by human, such as walking and chatting, will be collected and influence the virtual nature which is a miniature of the metabolism of ecosystem. Human, being as a part in the ecosystem can exsite only with nature peacefully. Flower Blossom from the tree. Yet, if this is harmonical balance is collapsed, flower will eventually wither away. The condition of virtual nature is influenced by all participants.