"I was just about to tell you about it." When Duanmu heard Xiao Yi's question, he immediately said, "I've just walked around. This underground palace is really strange."

"Oh? What's so strange about it?" Xiao Yi asked.

"Obviously, the underground palace was built as a mausoleum, and the center is the Sword Tomb. However, except for the gate of the Inner Tomb, there is no gate. The whole outer area is sealed. I wonder how the underground palace was built back then and how did the builders leave?" Duanmu blinked his eyes and said.

"Are you saying that you suspect that there are other hidden rooms within the underground palace?" Xiao Yi narrowed his eyes and asked.

"Definitely so. It's just that it's strange that I can't find any clues after searching for so long." Duanmu answered truthfully.

After listening to Duanmu's words, Xiao Yi also had a comprehensive impression of the underground.

It sounded like the underground palace was a building with a completely enclosed periphery, the Sword Tomb in the center, and four rooms in the other four directions were set up to form a Five Elements Formation, which sealed the entire underground palace.

"Where will it be if there is a hidden room?" Xiao Yi narrowed his eyes. His finger was placed on his chin as he descended into deep thought.

Not long after, Xiao Yi's eyes lit up. He suddenly raised his head and said slowly, "I see."

"What?" Duanmu asked urgently.

"It seems that we have to enter the Sword Tomb again. I'm afraid the way out is in the tomb." Xiao Yi said with a smile but did not immediately say his thoughts.

Looking at Xiao Yi's confident appearance, Duanmu was in no hurry to ask more questions. He led Xiao Yi, Jiuer, and Gu Lu to cross the void and arrive in front of the door of the Sword Tomb.

The door was shining brightly, but it was the restriction cast by Xiao Yi. In a flash of his mind, Xiao Yi communicated with the restriction. With a flash of light on the door, everyone entered the Sword Tomb again.

At the moment, it was empty. There was only a large black hole in the center, which was the place where the Devil God Sword was sealed.

"Could it be that the exit is under this large hole?" Duanmu leaped forward and arrived at the side of the deep and serene large hole. He extended his Divine Awareness and went inside to check. However, there was no exit at all besides the restrictions.

"No way! There's no way we can pass through this place!" Duanmu shouted.

"It's not at the bottom of the hole. It's there!" Xiao Yi extended his hand and pointed at the top of the hole.

In the center of the high dome, there was a mysterious pentagonal pattern.

However, this similar pattern could be seen everywhere.

"Where? Could it be that you're referring to that pattern?" Duanmu couldn't help but ask.

"Yes, if I'm not mistaken, it's not an ordinary pattern. It should have been a very brilliant Five Elements Transmitting Formation." Xiao Yi said indifferently, "This Transmission Formation has been running for many years since it was built in the underground palace. However, with the missing of the Gold and Water forces in the west and north rooms, the Transmission Formation, which relied on the five elements forces, stopped. So, you can't find a way out in this underground palace."

"Is that so? Then how do you know the transmission formation is right here in such a big place?" Duanmu said dubiously.

"Because the big hole in the middle of the Sword Tomb was the place to trap the Devil God Sword. Since the Death Gate is here, the Life Gate must be the opposite way. And above the dome, there is also a pentagonal formation. It can be seen that my guess is very accurate!" Xiao Yi said with a smile.

"I see!" Duanmu looked at Xiao Yi and inevitably felt ashamed. He also knew all the theories that Xiao Yi had said. However, he was not as careful and fickle as him. He only wanted to find the ready-made Transmission Formation but ignored these details. However, after a moment of shame, Duanmu also couldn't help asking, "How can we make the ancient Transmission Formation start again?"

Xiao Yi thought for a while and said nothing. He sent out five True Energy and, respectively, entered the Fire Dragon Cauldron and the Square Gourd. After a while, five True Energy wrapped five globes of different colors and returned to Xiao Yi.

The five globes of light were of different colors, and within them were the five different auras of Gold, Wood, Water, Fire, and Earth. They had been condensed and compressed within Xiao Yi's True Energy.

"Hei!" Xiao Yi let out a soft cry. With a shake of his hand, he shot the five clusters of light into the five-cornered pattern on the dome in a certain order.

With a 'buzz' sound, the five-colored balls of light returned to their respective positions. Not only did they not dissipate, but they also became brighter and brighter. They were like five dazzling pearls. The five-colored Spiritual Energy spread across the entire Fivehorns Array like water ripples.

"Buzz buzz!" Following five short muffled sounds, the formation suddenly emitted a great brilliance. Numerous rays of light shot down from the dome and swept Xiao Yi and the rest into it.

"Wow, that's it! It's exactly what you've guessed, Xiao Yi. This is a Five Elements Transmission Formation!" Duanmu cried out in surprise as his eyes were wide open.

However, before his voice had died away, Xiao Yi had already warned him in a low voice, "Be careful. The Transmission Formation has already been activated. It's hard to predict when we should stop. It can only be the spirit of us!"

"Don't worry, Xiao Yi. With our current strength, even if we encounter an Apotheosis Realm expert, we won't be as helpless as we were the last time!" Duanmu laughed heartily.

Before the laughter ended, the Transmission Formation in the dome emitted a flash of light. Enormous energy was delivered and enveloped them.

The next second, after the five-color light, there was no one in the Sword Tomb.

In one of the endless darkness of the ancient ruins, Duanmu's excited voice could be heard. "Hahaha, we are indeed out. Xiao Yi, what exactly are you using to activate that ancient Transmission Formation?"

"Poof!" Following a light sound, this place began to emit a great amount of light. Gu Lu emitted a mouthful of the Nanming Ignis that illuminated the surroundings.

However, they could see that there was a huge cave, empty. There was a gust of cold wind, but the ground was flat. Under everyone's feet, there was indeed an identical pentagram pattern. At this moment, the light on the pentagram was gradually dimming. Finally, it turned into a seemingly unremarkable pattern.

Xiao Yi released his Divine Awareness and found no danger inside the cave except for gusts of evil wind. He answered Duanmu's question, "The one who activated the Transmission Formation of the five elements in ancient times naturally had the Spiritual Energy of the Thunderclap Wood, Blue Enchantress, Yin Water, Cloud Mud..."

Speaking of this, Duanmu could not wait to say, "I have already thought of these things, but what about the last one? Gold Spiritual Energy, what did you use?"

"It's the Heptaureate Qi from the Sword Spirit." Xiao Yi explained in a low voice.

"Oh? So that's what it is!" Duanmu nodded. However, the next moment, he frowned and continued to ask, "Xiao Yi, I have a question. Since there is the Heptaureate Qi of these Sword Spirits, why is there a gold spiritual object in the west room? In this way, isn't it an unnecessary move to destroy the five-element balance in this tomb?"

Hearing this, Xiao Yi smiled: "This question also troubled me. However, when it was effective, I was already suddenly enlightened."

"Oh?" Duanmu's eyes lit up.

"I'm afraid that our previous guesses have been a little off. In the west room, there might not be anything that can generate the gold spiritual energy." Xiao Yi said.

"What do you mean?"

"The Devil God Sword is powerful. Even if the nine chains that lock it up are powerful, it will be difficult to suppress it completely. Only the extreme power of the thousands of mutilated swords is enough to frighten the Devil God Sword. This is also the reason why it was in the center of the Sword Tomb and surrounded by thousands of broken swords. Then, in order to seal up the entire underground palace, the ancient cultivators built a stone platform in the center of the Sword Tomb. First, they built a stone table with cloud mud. Secondly, they trapped the Demon God's Sword. Then, they got the Earth Qi, plus the Geng Metal Qi from the thousands of mutilated swords, so the sword was now in possession of the metal and the earth. Then they placed the Thunderclap Wood tree in the east room, released Blue Enchantress fire in the south room, and Mysterious Yin Water in the north room. In this way, the five elements were in good condition. However, the Metal Qi was in the wrong direction. What should they do?" Xiao Yi asked with a smile.

"That's right. What should they do?" Duanmu asked anxiously.

"Then they need to find a way to borrow the gold Qi from thousands of ancient broken swords to the west room and then form the balance of the five elements. Only in this way can it play the role of the Five Elements Formation," Xiao Yi replied.

"Borrow the gold Qi from the broken sword to the west room? How could it be possible that there is such a method?" Duanmu heard the words and cried out in disbelief.

"Yes! In ancient times, there was a kind of rare treasure that could achieve this effect." Xiao Yi's eyes were bright, and he said slowly, "I think I already know what was originally placed in the west room! The ancient cultivators were willing to pay a high price for this Devil God Sword. It can also be seen in the construction of the underground palace. The wisdom of ancient people was so high that they were really all related to each other. The swords were closely connected, and no one could surpass them!"

Before Duanmu could ask, he continued, "However, no matter how brilliant the means were, they couldn't resist the erosion of time. Who would have thought that after several years, the remnant Spiritual Energy and consciousness in the broken swords continued to absorb the gold Qi of Metal and produced several Sword Spirits? Gradually, the west room couldn't borrow the gold Qi, so the restrictions were weakened. Thus it was stolen. Therefore, the north room seal also became weak as a result, and the Dark Yin Earth Dragon seized the chance. Therefore, we had the chance today. If we didn't show up, the east room would be emptied sooner or later. Finally, the mysterious underground palace would be born. At that time, if the Devil God Sword wouldn't encounter an extremely pure-hearted person like Jiuer, would it cause destruction to the living beings? However, who knows? Was all of this scheme by the cultivators of ancient times? Otherwise, how could it be so coincidental?"

At the end of Xiao Yi's words, his heart was filled with shock!