"Wait a moment." Luo Fei suddenly spoke up, stopping Zhao Wanqing and his wife who were about to leave.
Zhao Wanqing and his wife looked at Luo Fei in confusion, as did Zhao Donglai and Yang Su.
Luo Fei asked, "Let me ask, did you two hear the sound of a motorcycle last night?"
"No, we didn't hear anything." Zhao Wanqing and his wife quickly shook their heads.
"Alright, that's all." Luo Fei indicated that the two could leave.
"By the way, Zhao Wanqing's house is right next to the road. If the killer came by bike, they would definitely pass by Zhao Wanqing's door. This is all dirt roads and uphill, so the sound of the motorcycle would be loud. Zhao Wanqing and his wife have no reason not to hear it, so the only explanation is that the killer did not ride a motorcycle." Yang Su nodded and said.
