When they saw the group of five enter a space that seemed to be a tunnel, the rest of those that remained were tempted, but Xiang Ning didn’t wait for them. He was neither a saint nor a particularly nice guy. He only did what he felt was right. 

If they followed Nathan over, he would have pretended it was nothing and still helped them. Now I’ve told you the way out, and that’s already very decent of me. What else do you want? He was the last to enter the tunnel. Before that, he momentarily stopped the flying knives, so the robots approached until they were only twenty...