Upper Limit: Demon God Mechanics, Ancient and Modern Defense Lines

[Zombie+Mecha+Xianxian+Zombie Machine+Zombie Immortal] Blue Star 2125 Disaster level: top level of destruction, upper limit is terminal level (there is no hope of recovery, humans can only wait for death), duration, unlimited... It wasn't until the first god stood up from the bottom of the sea that some of the secrets of the Third War were revealed. Only then did people realize that the myths carved on stones by the ancients were not legends, but reports of battles. The immortals, Buddhas, gods and demons recorded in mythology, ancient history, and ancient books are all true. But they are all dead. The dead gods left ruins behind, and those god-killing monsters and weirdos crawled out of the ruins. Weapon-devouring, eroding brilliance, evil in the world, zombie immortals and zombie gods, heresies and weirdness... Humanity is gradually collapsing. The surviving people picked up the broken avenues, disordered runes, god-conferring passwords, and immortal corpses left behind by the gods, welded them with clear light alloys and fusion cores, and used their corpses to build mechas, creating a line of defense spanning ancient and modern times. Bones are cast from clear light alloy, and the secrets of the Nine Heavens are used as souls. The world-class mecha carries the immortal magic and takes off into the sky to face enemies from the sky. The world is in catastrophe. Qin Yun's first task was to repair the city's energy cables, but with the shortage of personnel, his tasks became more, more complex, and more dangerous. Repair the energy grid, weld the mecha bones, hunt down the eclipse beast, kill the false god, and destroy the current immortal. Gradually, he grew from a temporary worker to the strongest person in Zhongzhou, the writer and the executor. Later, he repaired the broken avenue, repaired the broken universe, and cleared away the filth in the long river of time. Later, those things in the sky began to be afraid of him. He traveled across the stars and the sea, and his path was littered with remains. Zhongzhou calls him the highest man-made person.