Empty guns?

Hearing Su Rui's explanation and looking at the magazine in his hand, almost everyone felt that their brains were not enough!

Just now almost all of them were knocked to the ground and scared to death by the sound of gunfire, especially empty guns?

Everyone can see clearly that there is no bullet in the magazine!

But if it's an empty gun, why does it sound so loud? Why did the Ouyang ice sheet fall to the ground? Why do you wake up after closing your eyes for a long time? Why is it so weak now?

Su Infinite seemed to think of the reason first, but not...