Walking alone in the world of mortals, the green ivy brushed past the lapel and the blue clouds wet the promise. Mountains and water can forget each other, the sun and moon can have nothing to do with each other. At that time, there was only one person's Ukiyo Qinghuan and one person's long-lasting stream. You choose one of all living things in life, and you choose one to live your life with. Time is as light as when we first met. Time is as long as running water. When we look back, the lights are waning. Four days in the clear water, the clouds on the green hills, the water in my heart. The sky is high and the earth is far away. I feel the infinite universe. When I am full of sorrow, I know the number of surplusness and emptiness.