1331 Only one thing (2)

Her words fooled Professor He but they did not fool Captain Lei who had seen human blood so many times that he knew that the metal rods were covered in human blood. He had no idea what was going on but he did not question Song Yan either as he could see that Professor He was indeed really scared. 

He glanced at the deathly pale face of the man who nodded and heaved a sigh of relief when he heard that it was not human blood. Only then did Captain Lei understand why Song Yan said that it was not blood but that still did not explain where this human blood came from!?