"Do you know why it's called the Iron Wall?" Marshal Jian Dun asked to himself, as if he was not asking about Excellence, and without waiting for Excellence to answer, Jian Dun Yuan said the answer, "Because not breaking the Iron Wall is my life's pursuit!"

"But until now, not many people know its name! do you know why?" asked Marshal Jian Dun again.

"I don't know!" Excellence knew that Marshal Jian Dun would definitely tell me the answer, so he replied very directly, without guessing.

"Because I swore that its name would not be sung until it had truly attained the name of the Iron Wall! Only those who could break my shield would be entitled to know its name!" said Marshal Dun very solemnly.

"Then why did the marshal tell me today?" asked Excellence, a little confused.

"Because you or your legion have the ability to break through the defenses of the Shield Legion!" Marshal Shield's tone was a little heavy, but it was by no means decadent, still full of that invincible confidence.

"Is it a fusion ray?" In an instant, he guessed what Marshal Shield was talking about, and of all the attack methods mastered by the Demon Slayer Legion, it was the only one that could penetrate the defense of the Shield Legion!

"Is that light called a fusion ray? Sure enough, what a name! Can I be lucky enough to know its attack parameters?" asked Marshal Shield.

Although he was asking for Excellence's opinion, his tone was full of irrefutable flavor, but Excellence didn't care, and he didn't think about refusing anyway, after all, it was difficult to keep secret such a thing as attack parameters.

"No problem!" Excellence directly sent the attack parameters that Lily had just sorted out to Marshal Strongun.

After carefully reading what Excellence had given, Marshal Jiandun showed a regretful expression on his face: "You shouldn't have used this weapon at this time!"

"It's just an accident! The original fusion ray is not so strong, although the penetration is also very strong, but the lethality is actually not large, but a temporary way to enhance the lethality of the ray was discovered, so the experimental attack was launched.

Who would have expected that the fusion rays would trigger such a strong change in convergence as they passed through the sea of pure energy that the actual increase was so much larger than expected!" Excellence explained.

"It's already happened, it's useless to regret it, or what are you going to do with it?" Marshal Jian Dun finally asked the real reason for looking for Excellence.

"Hmm...... I'm not going to let it flow out of the Demon Slayer Legion, it's going to be the exclusive regular weapon of the Demon Slayer Legion!" After a moment of silence, Excellence said his plan.

"This is very good! We must pay attention to secrecy, and we must not leak it out!" Marshal Jian Dun smiled with satisfaction, and his excellent thoughts were the same as his, saving him a lot of tongues.

"This is the killer weapon of our Demon Slayer Legion, I will definitely protect it strictly, and I will definitely not leak half of it!" Excellence assured.

He knew very well that Marshal Jiandun demanded this, and his absolute invincible defense became something that everyone could break from existence, whether it was the dignity of the peak powerhouse of Xuan Xian or the pride of the quasi-legendary legion, he would not care about these, after all, what is truly powerful is never the weapon, but the person who uses it!

Marshal Shield has absolute confidence, even if fusion rays are widely spread, the Shield Legion is still an invincible federal iron wall!

The reason why he urged Excellence to limit the spread of fusion rays was more to prevent it from falling into the hands of demons, after all, for the invincible penetrating weapon of fusion rays, all the active defensive fortresses of the Federation are the best targets!

Once the demons are given access to the fusion ray, the defense line that the Federation has spent thousands of years building up will immediately become vulnerable!

Marshal Jiandun and Marshal Muxin have a good relationship, and he knows no less than Excellence, he is very aware of the current state of secrecy in the Federation, and it is definitely a disaster to spread the fusion rays!

"I'm looking for you in such a hurry, just for this one thing, I'm relieved that you can have this determination!"

"If the marshal has nothing else to do, I'll take my leave!"

After returning to the Rock Fortress from Marshal Shield, Excellence once again emphasized the importance of the Fusion Ray secrecy, and decided that the Fusion Ray was only equipped on the Rock Fortress for ease of management.

They know the importance of fusion rays, and of course the demons know it too!

The loss of three hundred demon ships made the Demon God's spear erupt into a thunderous rage, if the strength and influence of the ten demon emperors were strong, he would definitely break them into thousands of corpses and refine their souls to vent the hatred in his heart.

He didn't expect that in a simple tentative mission, they would be able to do it like this, not to mention the injured demon general, the serious loss of three hundred demon ships was enough to make the ten legions lose the ability to continue the expedition in a short period of time.

Whether it was to replenish the magic ship or transfer another legion to come, it could not be completed in a short period of time, which almost completely disrupted his follow-up plan.

As soon as he thought of this, he couldn't help but scold: "Waste, a bunch of waste!"

"That's a bit too much, Your Highness! Who knew that those child's play lights could be so lethal?, I don't think anyone who was in their position at the time would have changed the outcome, right?" one of the Demon Emperors retorted, and the others nodded in support.

The same Demon Emperor level powerhouse, also the leader of a legion, the ten Demon Emperors think that they and the Demon God Spear are just a subordinate relationship in their positions, how can they endure this kind of insult.

"If it weren't for your unauthorized actions and rushing to such a close distance, how could you be attacked, and your unauthorized actions have caused such serious losses, so what is the use of all this waste?" the Demon God Spear scolded.

The attitude of these demon emperors completely angered him, and that Ruyuan's murderous aura could no longer be restrained, and it exploded in an instant!

The ten Demon Emperors instantly only felt a vast killing will pressing on their bodies, obviously there was nothing pressing on their bodies, nor did they have any restraints, but they just felt that they could barely move.

At the same time, the ten demon emperors of the same level were suppressed, and the power of the Demon God's spear was undoubtedly revealed, and at the same time, it also told these demon emperors that they were definitely not weak to inherit the name of the Demon God's spear.

The eyes of the ten Demon Emperors looking at the Demon God's Spear also changed from arrogance to respect and fear, and they finally realized that the one in front of them was not something they could compete with in any way!

"If we don't find out this secret weapon this time, when it comes to the real big war, we who have no defense, it is very likely that we will be wiped out, so the loss of the three hundred demon ships is completely worth it!" said a demon emperor with a blushing face.

"If it weren't for this reason, do you think you would still be able to sit here?" As soon as the Demon God's spear was retracted, all the Demon Emperor Puppets breathed a sigh of relief!

"What the hell is going on with that penetrating light? I want the most comprehensive information!" The Demon God's spear was almost firing out, and finally turned his attention to the fusion ray weapon.

"Your Highness, that kind of weapon looks like a spiritual light, extremely fast and difficult to dodge, and the most important thing is that it has super penetrating power......" Several Demon Emperors explained the situation of the fusion ray attack in detail several times, and did not let go of any suspicious details!