The End of the World: the Awakening of the Spiritual Source

[Team, formation of forces, construction, no harem] In the apocalyptic world, zombies roar and alien beasts roar. The spiritual energy explodes, and all thermal weapons and electronic products become ineffective! Humanity awakens its spiritual source and fights against the end of the world with a mortal body. The surviving humans established forces one by one, including the seven military regions and the four emperors. Zhang Chen was born two years after the end of the world, but when he was eighteen years old, he traveled back to 20 years ago when there were still three days before the end of the world broke out. After collecting supplies, subduing subordinates, and catching a beauty, should I kill her? Or give rewards to subordinates? He went to school to save his parents when they were young, but he didn't know that he was actually his father's younger brother...