Surviving in the Era of Mountains and Seas

Hell is empty; the Grim Reaper walks among us. In the year 2100, Earth's spiritual qi began to revive, but the calamity that followed brought suffering to all living things. Unknown beasts suddenly appeared on Earth. They came in countless forms and numbers, reaping lives one after another like the Grim Reaper itself. Humanity was slaughtered like lambs led to the butcher. Gradually, scientists in Daxia discovered that these beasts resembled creatures described centuries ago in the Classic of Mountains and Seas, a book written by the ancients. People therefore called them the mythical beasts of the Classic of Mountains and Seas. To survive, humanity began fighting back against them...