The sharp sound that Yan Dong knew so well pierced the air. It tore through the air whenever the low-temperature artist slid toward the ground. Yan Dong spotted it in the sky as it approached.

The low-temperature artist didn’t greet Yan Dong. The ball of ice fell into the middle of this last ocean, causing a tall column of water to spout. Afterward, once again, a familiar scene emerged: A disk of white fog oozed out from the point where the low-temperature artist hit the water. Rapidly, the white fog covered the entire ocean. The water quickly froze with a loud cracking sound. Once again, the fog dissipating revealed a frozen ocean surface. Unlike before, this time, the entire body of water was frozen. There wasn’t a drop of liquid water left. The ocean surface also didn’t have frozen waves. It was as smooth as a mirror. Throughout the freezing process, Yan Dong felt a cold draft on her face.

The now-frozen final ocean was lifted off the ground. At first, it was lifted only several careful centimeters off the ground. A long black fissure emerged from the edge of the ice field between the ice and white salt beach. Air, forming a strong wind low to the ground, rushed into the long fissure, filling the newly created space. It blew the salt around, so that it now buried Yan Dong’s feet. The rate the lake was rising at increased. In the blink of an eye, the final ocean was in midair. So much volume rising so quickly produced violent, chaotic winds. A gust swirled up the salt into a white column in the ravine. Yan Dong spit out the salt that flew into her mouth. It wasn’t salty like she’d imagined. It tasted bitter in a way that was hard to express, like the reality that humanity was up against.

The final ocean wasn’t a cuboid. Its bottom was an exact impression of the contours of the seafloor. Yan Dong watched it rise until it became a small point of light that dissolved into the mighty ring of ice.

The ring of ice was about as wide as the Milky Way in the sky. Unlike the rings of Uranus and Neptune, the surface of the ring of ice was neither perpendicular nor parallel to the surface of the Earth. It was like a broad belt of light in space. A broad belt composed of two hundred thousand blocks of ice completely surrounding the Earth. From the ground, one could clearly make out every block of ice. Some of them rotated while others seemed static. Throughout the day, the ring of ice varied with dramatic changes in brightness and color. The two hundred thousand points of light, some twinkling, some not, formed a majestic, heavenly river that flowed solemnly across the Earth’s sky.

Its colors were the most dramatic at dawn and dusk. The ring of ice changed gradually from the orange-red of the horizon to a dark red and then to dark green and dark blue, like a rainbow in space.