Wo Zai Moshi You Taofang

Jiang Chen arrives in a post-nuclear war world filled with chaos and destruction. To ensure survival, he gathers refugees and creates a base, forming a federation. He brings back technology from this devastated era to the real world, aiming to reshape Earth's political system and save it from collapse. He works to build the Great Union of Earth Federation, focusing on expanding its reach and defending against dangers coming from the sky.