The old man of the Heavenly Sword nodded with satisfaction: "That's right! The ninth sword should be the sword technique that stimulates the sword formation here!"

With that, he used the sword as a reference, cast a sword trick, and shot out a sword light, which disappeared into the central array of the stone cave.

"Whew!" the sword light pierced through a hole here, and immediately a majestic sword qi poured out of it.

These sword qi gathered in mid-air and did not disperse, and gradually formed a layer of sword qi formation.

Hua Yun glanced at this sword qi formation from his concentration, and then said, "This is a small teleportation sword formation, similar to the Void Stepping Sword Formation. Although the disciple can't see through the specific teleportation location of this sword array, it shouldn't be too far from here!"

As soon as he finished speaking, the sword qi contained in this sword qi formation slowly collapsed and became gradually thin.

"Oops, this sword formation can't last long!" Hua Yun said hurriedly.

"Don't hesitate, enter the sword formation all!" "The old man of the Heavenly Sword hurriedly ordered, and then flew into the sword formation first.

Li Muran, Sword Spirit, Liu Chenfeng and others also immediately flew into the sword formation. As soon as they entered the sword array, the sword array turned into a ray of light and disappeared without a trace, and at the same time, they were swept up by the glow, and they also disappeared into this cave.

The next moment, their eyes lit up and they found themselves in a stone hall. Most of the stone halls are also very deep underground, but there are many glowstones inlaid on the stone walls, which illuminate this place quite brightly.

The teleportation curtain behind them had vanished, in other words, even if someone tracked it down to the cave at the bottom of the lake, they wouldn't be able to get here.

"There should be a clue left by the ancestor here!" Liu Chenfeng said, looking around.

The stone hall was empty, and there was almost nothing left. On a stone platform that was only one person high, a small jade sword was inserted, and the small sword was inserted into the jade, revealing the sword body and hilt that were more than two feet long.

Obviously, the mystery is in this stone sword.

Liu Chenfeng and the others were about to step forward to carefully take a large number of this stone sword, but Hua Yuncong shouted loudly: "Be careful! This stone sword is connected to a set of sword formations of 'Ten Thousand Swords Together', if you move without permission, it will activate the formation and instantly turn this place into ruins!"

The old man of the Heavenly Sword also nodded: "That's right, don't act rashly, this stone sword is a kind of sword sealing stone, which has been sealed by the master and his old man with a special sword technique, and it must be activated with a specific sword technique, otherwise it will trigger the sword formation and destroy this place!"

As he spoke, he glanced at the stone sword carefully, and then said, "Well, the master has seen it, and he should use the anti-spirit sword light to unlock the seal of this stone sword." Nie Xin, you are a monk who majored in the "Reverse Immortal Technique", and among all the disciples, your Reverse Soul Sword Technique is the most refined, and it is up to you to inspire this stone sword. Be careful, don't be careless!"

"Yes!" The fifth disciple Nie Xin walked to the stone platform, and opened his mouth to squirt, and sacrificed his natal magic weapon - it was a shining translucent light attribute sword, its form was quite similar to the Xuanguang Sword, it should be an imitation of a Xuanguang Sword, but the quality was not low.

Li Muran's heart moved, from the previous sword qi teleportation array to the sword sealing stone of this special seal, he could already confirm that this was the secret place left by the person in the entrance. However, why did the Venerable Master Xuanguang play such a trick on the mysteries? Why did he leave these clues in such a secret place? The various mechanisms left by the Venerable Master Xuanguang required specific swordsmanship and people who were extremely familiar with him before they could crack them. This shows that the Venerable Master Xuanguang would rather be sealed here forever than be discovered by outsiders.

"What exactly is the Venerable Master Xuanguang hiding here? Why does he only allow his henchmen to have the ability to enter here?" Li Muran couldn't help but pound when he thought of this: "Could it be another mysterious treasure mirror?"

Li Muran already knew that the other side of the sword, which was paired with the mysterious sword in his hand, had fallen into the hands of Master Xuanguang and was taken by him to the spirit world. Unfortunately, shortly thereafter, the Venerable Master Xuanguang mysteriously disappeared.

"Maybe he ran into some trouble and didn't dare to take the treasure mirror with him, nor did he dare to give it to his disciple - because the old man of Heavenly Sword was not capable of taking charge of this treasure at that time. Therefore, he hid the treasure mirror here and left it for his descendants - only they had the opportunity to come here and pass the assessment he had set. No matter how strong an outsider is or how lucky he is, it is impossible for him to pass the various swordsmanship tests set by him. Li Muran said secretly in his heart.

"It would be great if we could really find another treasure mirror!" Li Muran was quite excited in his heart. If that was the case, he would only need to borrow it for a night and draw another light opening talisman with its mirror light, and it would probably be possible to perfect his divine light. At that time, there may no longer be the strange phenomenon of the Divine Light qualification changing day and night, and the quality of the Divine Light is likely to be greatly improved!

His divine light at this time, although it has changed significantly compared to the nether time, is still the same in essence, it is an incomplete "mutilated divine light". And when Li Muran knew that there was a second mirror, he guessed that if he wanted to perfect the divine light, he had to rely on the second mirror.

It's not just his divine light qualifications, if the two mirrors are put together, God knows what kind of changes will happen, maybe he will be able to discover the true secret of this treasure mirror! The origin of the treasure mirror is related to his own life experience, and it is related to the reason why he came to the immortal cultivation world, Li Muran is naturally very curious about this!

When Li Muran's mind was on the treasure mirror, Nie Xin had already used his natal sword sword to slash out a sword light of the reverse spirit and submerged into the stone sword.

After the stone sword was hit by this sword light, the surface was immediately shrouded in a layer of brilliant sword light, and the stone chips on the surface of the stone sword peeled off one after another, revealing a translucent jade sword.

"Brush!" the jade sword pulled itself out of the stone platform and flew into the air.

A large amount of sword qi poured out from the stone platform, turned into a ray of light, and submerged into the body of the jade sword.

At the same time, more sword qi fed back to the sword that Nie Xin had slashed out, and they all surged towards Nie Xin's body.

"Master, this is ......" Nie Xin was shocked, these sword qi surged towards him, and he was actually powerless to resist.

"Don't worry!" The Heavenly Sword Old Man smiled slightly: "This is an opportunity given to you by your Master Ancestor!

"Yes!" Nie Xin hurriedly ran the exercises, absorbing and refining these sword qi.

In just half an hour, Nie Xin's aura suddenly increased a lot, and his mana was obviously more condensed.

"This is the pure sword qi sealed by the ancestor, the fifth junior brother is really a good opportunity!" Liu Chenfeng said with envy: "The fifth junior brother received the help of the pure sword qi sealed by the ancestor, and his cultivation suddenly reached the peak of the early stage of the spirit body. In time, it will not be difficult to break through to the middle stage of the spirit body!"

This was a reward for Nie Xinshun to crack the assessment set by Master Xuanguang, and all the disciples were very envious.

And after all the sword qi sealed in the stone platform was dispersed, the jade sword finally turned into a fierce sword light, and somewhere in the nearby void, it cut through a crack.

"Step on the Void Sword Technique!" Even Li Muran recognized it, this sword is called the Void Sword Technique, which is a space-like supernatural sword technique commonly used by the masters and apprentices of the Heavenly Sword Valley. Without waiting for the void crack to close on its own, everyone dodged into it.

The next moment, their eyes lit up, and they came to an almost identical hall again.

If it weren't for the fact that there was an intact sword sealing stone on the stone platform, everyone would have thought that they had returned to their original place.

"There is another test!" Li Muran frowned, and said secretly in his heart: "Master Xuanguang is really cautious. ”

"Master, what kind of swordsmanship is the master testing this time?" asked Liu Chenfeng. There is no need for the old man of the Heavenly Sword to say more, they all know that the mystery is on the sword stone. However, only a very weak sword qi escaped from the Sealing Sword Stone, and in order to distinguish which kind of sword qi it contained, it required a high degree of swordsmanship, and at the same time, it was necessary to be very familiar with the various swordsmanship of Master Xu Xuanguang.

"It's the 'Divine Slashing Technique'!" The old man of the Heavenly Sword frowned: "This is also one of the swordsmanship created by the master and his old man." However, this is a sword technique based on divine thoughts, and divine thoughts are the main ones, supplemented by swordsmanship. You didn't even major in this set of swordsmanship, and you only practiced for a while as a teacher. ”

Obviously, the Heavenly Sword Old Man didn't expect that Master Xuanguang would leave this test, and he felt a little troublesome.

"Senior Brother Li," the old man of the Heavenly Sword said to Li Muran, "I don't know how you have cultivated this set of sword techniques, can you unlock the seal of this sword stone?"

Li Muran nodded slightly: "I have spent some time cultivating this set of swordsmanship, so let's give it a try!"

Compared with other swordsmanship, "Slashing Divine Sword" is more special, this exercise does not have too high requirements for swordsmanship, but it has extremely high requirements for divine thoughts. Although Li Muran's cultivation time is not too long, his divine thoughts are extremely pure, so the "Divine Slashing Technique" has also been cultivated to a higher level. What's more, he also has an extremely high-quality greedy sword to help.

Li Muran waved his robe, and the purple light flashed, and he took the greedy sword into his hand.

The greedy sword sensed the divine aura of the surrounding monks, and the sword light flickered, ready to move, it was indeed a very greedy sword. However, it was firmly held in Li Muran's hands, but he did not dare to break free from Li Muran's shackles.

Li Muran injected a wisp of pure divine thought power into the greedy sword, and then waved it lightly. "Brush!" With a soft sound, a purple sword light flashed and disappeared into the sword sealing stone.

"Bang!" The stone chips on the surface of the sword sealing stone immediately collapsed and peeled off, revealing a transparent sword body as white as jade.

The white jade sword also withdrew from the stone platform on its own, and then, as Li Muran expected, a large amount of pure sword light also escaped from the stone platform, and a small part of the sword light merged into the upper hand white jade sword, but most of it was not in Li Muran's body.

"Although Senior Brother Li has not officially met Master, now that he has obtained the pure sword qi sealed by Master, the name of Master and Apprentice can be regarded as solid!" said the Old Man of Heavenly Sword with a smile.

With such an opportunity, the old man of the Heavenly Sword kept the opportunity to himself, Li Muran was quite grateful in his heart, but he was trying his best to refine these sword qi and couldn't speak.