65 Million years ago, one day when the world was operating normally, a huge creature slowly came ashore from the deep sea in an unknown sea area. However, the next second it set foot on this land, the whole world trembled violently. Before people and objects realized the pain, they were like over-inflated balloons and began to collapse from within. The outside rapidly expanded and exploded. In an instant, all materials stagnated and combined in mid-air, forming a new species. One of them retained the most human blood, but because it had a human body shape and a variety of materials, later generations were called "Xenobiotics", and non-humanoids were called "Xu". The Xenobiotics became the strong men of the new world. The competition for resources in the old world continues, and the war between the aliens and the ruins is about to begin!
Concept: History and present are a huge cycle