C55

This thought flashed across Ding Qian's mind. He knew that Du Zhixun was glaring at him in the next room, waiting for him to make a mistake.

He had made one mistake two years ago, and he couldn't do it again.

"Yan Guo, on the day of the murder, before Wu Hongsheng came to your house, did you see this person?"

"I haven't."

The wave chart had actually regained its stability