The Rise of the Early Yuan Dynasty

The appearance of a mass of mist split the world into two, and a huge bloody mouth rushed out of the mist, constantly looking for food. There was a sudden change, and all human electronic instruments and firearms became ineffective, as if they had entered a new era. People can't get in outside the fog, and people can't get out within the fog. They can only watch the fog spread a little bit and fall, and then it will all be enveloped and usher in a new era.