I Improve My Strength by Absorbing the Energy of Monsters

In 2060, the space cracks opened, and countless alien monsters swept across the world. The prosperous civilization was destroyed. During the catastrophe, the earth fell, the cities collapsed, and humanity was on the verge of extinction. In order to defeat the monsters and seal the space cracks, all the super gods in the world sacrificed their lives and died. The seals of the ten demons that were about to destroy the world left a glimmer of hope for mankind. In the next one hundred and forty years, the years passed, and the remaining humans were left alive. The road to reconstruction has never stopped. Cities have risen one after another on the ruins. Humanity has restarted civilization, iterated on technology, cutting-edge machinery, and detection technology have been rapidly updated. They have been perfectly integrated with the awakened superpower system to create a new superpower technological civilization. Within the high wall, order is stable, science and technology are prosperous, and superpowers have become the core force to protect the human race. However, outside the high wall, the entire wilderness restricted area is still rampant with monsters and murderous secrets.