No, You Call the Steel Fortress a Shield?

Because of the jealousy of others, Ye Fan could only go to the border police station to do weapons maintenance. The place was in dire straits and all kinds of outdated weapons were scattered everywhere. The captain smiled sheepishly: "Just change it so it can be used." An ordinary dagger was directly transformed into a super saber that can cut through iron as well as mud, and can even pierce a tank. An automatic rifle was converted into an air compression rifle, directly breaking through industry barriers and subverting the world structure. The Ugly Kingdom felt that Ye Fan could not be allowed to develop any longer, and sent a commando team to attack the border of Kyushu Kingdom. Commando: God, what the hell is this steel fortress? Ye Fan: Isn't it just a shield? What a fuss! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.