Water, air, earth, and sunlight, are the catalysts for the growth of all things. In 2276, everything has long since been exhausted, and humanity can only live within cities enclosed by massive defensive walls.,All of this is thanks to the new materials brought by the planetary impact. Humanity survived once again, and afterward, they divided themselves into cities, each within a vast isolation wall, gradually restoring their ecosystems to allow for human survival and reproduction.,From afar, the massive ring-shaped city, divided into three levels—upper, middle, and lower—basked in the sunlight. Most of the buildings were three stories high, arranged in a staggered pattern from bottom to top. Except for the areas near the outer wall that couldn't be bathed in sunlight, the entire city resembled a sun in the night, dazzlingly bright.。