In the dim interrogation room, Han Kuan sat in the interrogation chair with no emotion on his face. He gave no argument, and he seemed completely apathetic. It was as if the whole world had nothing to do with him.
"It seems that this is the real you!" Zhao Yu said as he sat in a chair then turned to position himself face to face with Han Kuan. "I remember when I first met you, you talked a lot! It seems that's what you prepared for me particularly, right?"
Han Kuan looked at Zhao Yu coldly, and after several seconds of silence, he said softly, "Officer Zhao, I don't understand. What do you mean?"
"Ha ha ha ha..." When Zhao Yu saw Han Kuan start to talk, he could not help but laugh loudly. Then, he said with eyes that were filled with vibrant energy, "Rocca... Um... No... It's Locard's exchange principle... Yes! This law says that as long as a criminal has committed a crime, there must be something left at the scene!"