Feng Ju's mechanical arm emitted a deep hum, with the hydraulic system running in overload.
He grabbed a piece of rebar protruding from the wall, and as his metal fingers tightened, they emitted a teeth-gritting "screech" sound.
With a loud shout, the muscles of his arm and mechanical joints exerted force simultaneously, snapping the thumb-thick rebar into a bend!
"Boom!"
The first punch smashed into the concrete wall, sending debris flying.
Then came the second punch, the third punch...
The pitch-black metal fist repeatedly pounded the same spot, as fine cracks spread outward, the dull sounds of impact echoing in the sewer.
On the other side of the wall, Feng Yuhuai's head slowly lowered, her hair falling into writhing crimson threads.
The dense red threads pulsed like blood vessels, reconnecting her head to her body.
Suddenly, her neck twisted backward at an inhuman angle.
"Boom! Boom! Boom!"
