四级文明的目标是整个宇宙，他们甚至可以创造星系和生命，毁灭人类轻而易举。整个宇宙在四级文明面前已经没有秘密，四级文明终于来到了宇宙的边缘，试图穿越宇宙时却发现回到了宇宙另一端。 The goal of the fourth-level civilization is the entire universe, they can even create galaxies and life, and destroy mankind easily. The entire universe has no secrets in front of the fourth-level civilization. The fourth-level civilization finally came to the edge of the universe. When trying to travel through the universe, it found that it had returned to the other end of the universe.