C1648 So it was just an experiment

The width of the drain and the speed of the water required precise calculations.

Feng Xin roughly estimated that after going through the drainpipe, it would take 30 seconds to get through. He had to hold his breath for these 30 seconds, or else, he would drown in the water.

"Are you still not going to jump?" Lifting his head out of the water, Feng Xin was speechless. As a man