Zhou Wen ignored the Metal Guard's attacks and walked towards the tunnel's door.
The Metal Guard's bullets swept across Zhou Wen's body, but they were blocked by the Prisoned Dragon armor, not even leaving a mark. Instead, the bullets ricocheted from the Prisoned Dragon armor and shattered the Metal Guard's energy source.
The Metal Guard wasn't afraid of the bullets, so it was useless even if the bullets riddled its body with holes. However, once the energy source exploded, the Metal Guard was dead.
The six doors opened as hordes of Metal Guards rushed out. Bullets fired at Zhou Wen crazily, but all of them ricocheted from the Prisoned Dragon armor. They all had their energy sources blasted apart.
Zhou Wen didn't attack. He only relied on the ricocheting to finish off the Metal Guards.