Sleep seems to be the only valuable and meaningful way of life. Sleep in real life provides us with an ideal state-it has all the possibilities of visualization and is harmless to the world. Between half-dream and half-waking, it is our exploration of the critical point of life. I simulate the moment of death in my sleep, retaining the memory and the possibility of waking up. Putting aside all the health meanings of sleep, the blank world in the dream is nothingness and real "emptiness", escape, enter, cross the lake surface and bottom to wave to the real world, survey, and experiment. Sleep also provides the possibility of being rescued and interrupted. The struggle and pain in the dream will disappear with the alarm. It seems that we can control it, just like the smoke in our hands, it seems difficult to intervene, and the surrounding chaos and chaos dissipates.