Swimming and Fighting Dragons

Fulfill your duties faithfully, live and die here, keep your heart in mind, have no fear and no retreat, condense the foundation stone, stand the Great Wall, move with the sword, break the illusion of life and death. Thousands of stars, the vast earth, a flicker of a page, the past of the world of mortals, are engraved in the heart, one string after another, the song ends and everyone disperses. A sword cuts through the sky, a song moves people's hearts, why should the song end and everyone disperses!