He Lei and the other robots surrounded me. We were separated from the spirits in Croton City by a border wall. 

It was an interesting scene. Only a thin line was separating us from the enemy. They couldn’t come through and we couldn’t enter. We were like soldiers on both sides of the border. 

"Croton City used to be a military base,” Xing Chuan’s image appeared next to me among the robots. “The last general before the end of the day descended upon this world, was General Samuel. He was an activist in the war doctrine when he was alive. He believed that the development of humans was at its bottleneck and it needed a breakthrough…” 

Development of humans was at its bottleneck… This sounded really familiar to me. I suddenly recalled that I had read something similar in Professor Hagrid Jones’s notebook. 

“He believed that only war could expedite a more advanced civilization. So, Luo Bing…” Xing Chuan looked at me. "I don’t think they are willing for you to set them free.”  

“I can tell that as well.” As half a soldier myself, my...