Zhou Ning chuckled twice, his sudden action leaving the two men baffled.
"The hardness of the human skull ranges between 3-4, while natural marble's hardness is between 3.5-5.5. I couldn't find a more suitable stone, so let's use this one for our simulation.
Let's test with three actions: hitting with both hands held sideways, hitting with one hand vertically, and hitting with both hands vertically. Then we'll compare the fracture marks on the marble to visually understand how the killer struck the victim."
Xu Dayuan nodded.
"The test is fine, but why are you passing the marble to me?"
"I'm too tall; it's not easy for me to hit it from above."
Mr. Zhao, not minding the hassle, stepped forward, flashing a grin as he handed the wrench to Zhou Ning.
"No worries, I'm short. You do the smashing."
Zhou Ning rolled his eyes.
"I don't have the strength. Let's just get on with the experiment."
