When we put our feet on the earth and look up to the sky, we always have the deepest and most complex emotions. It seems that somewhere in the sky, there is where we hope, and there is the paradise we imagined, created, and longed for. When dense clouds fill the sky, we always want to see through everything behind the dense clouds. It seems that there is our past and future there... If there is indeed the "heaven" we yearn for in that blue sky, if we can really reach that fairy tale place, then what kind of mood will we bring with us? Do we protect or occupy that place? Even if it exists, it has never belonged to us...