This 3D animation is seeking for the secret of life. If only the clock of our life would never stop…if only our aged body could be reborn, like a new embryo in Spring, and growing youthful again! Isn't this the most dreamed dream we have been dreaming for? Yet this dream could really be fulfilled, when we understand the key of the grand circulation and connection between lives. The living things showed in this animation represent both nature and human. Like different organs, nature lives, such as plants, flowers, etc. build up a big life body. From the other side, the circulation in human body is the same as the cycle of a natural world. Sure as each individual, we will all grow old in time and we will all disappear someday, like a leaf on a tree. But the new leaves will keep growing out from the tree of life, season after season, generation after generation. So, we breathe with the nature together.