The sand wall was not motionless, as countless white sand grains were rotating and flowing on its surface at incredible speed, forming spiral-shaped depressions of flowing sand.
It was like miniature desert whirlpools, or like a shield of absolute defense that possessed life and continuously adjusted itself.
Three specially made armor-piercing bullets, with a piercing howl, plunged into the rotating sand wall.
The expected penetration did not occur.
The powerful kinetic energy of the bullets was weakened layer by layer the moment they made contact.
The rotating sand was like countless tiny palms, gently yet firmly brushing over the bullets, gradually extracting and dispersing the power they carried.
Clang! Clang! Clang!
Three clear metallic collision sounds rang out. The three bullets, having completely lost kinetic energy, fell weakly to the ground like moths drained of strength, sinking into the sand.
The white sand wall slowly dissipated, retreating back into the gourd.
