Early the next morning, "huh?" When he woke up, Zhao fan looked at his robot arm with some doubts. It seemed that there was something different, but he couldn't say where it was. Moving in his heart, he saw his left arm folded reversely under Zhao fan's incredible eyes, and finally he contracted into a small metal ball and hung it on Zhao fan's bare left shoulder, which looked very strange.

"strange, I remember that this arm doesn't have this function?" Zhao fan was puzzled. He touched the metal ball that was the size of a man's fist. His mind moved. The metal ball stretched out again and became a...