After rushing and killing along the path pointed out by Liu Boyong for a while, the strength level of the demon corpses and ghost creatures that intercepted Zhou Yang was obviously improved, so that occasionally monsters rushed past Zhou Yang and pounced on Liu Boyong and Yan An behind him.

Finding this situation, Zhou Yang was not surprised and overjoyed, knowing that this was the right way.

He didn't care what kind of impact those fish that slipped through the net would have on the two people behind him, he just pushed forward violently and pushed forward again.

Snort!

Countless black smoke rose, but a demon array was triggered by Zhou Yang, causing countless highly poisonous corpse water to pour down from the top of the cave, and then burned into black smoke by the "Qianyang True Fire" burning on his body.

Rushing to kill all the way, Zhou Yang has also experienced a lot of attacks from the traps of the Demon Array, and the power of these Demon Arrays themselves can only be said to be average, at most it can make the Jindan Stage Monk who fell into it pause slightly.

However, the traps buried in the demon array could be severely damaged even if the Jindan stage monks didn't pay attention.

For example, the highly poisonous corpse water poured down just now, even if a Jindan monk is touched by it, his body will be corroded, and the corpse poison in his body, and the magic weapons below the fifth order will be contaminated by this corpse water, and within half an hour, they will be corroded and completely scrapped.

This is just one of the more ordinary traps, and the most vicious trap Zhou Yang has encountered is a resentful demon head refined with ghost secret techniques.

This kind of resentful demon demon head is that the demon monk chooses a strong-willed monk, and then tortures the other party by all means, and when the other party's resentment accumulates to the peak, he will kill it and extract the divine soul as a material for refining the resentful demon head.

The resentful demon head that Zhou Yang encountered was refined by the divine soul of a Purple Mansion period monk, and it was hidden in a demon array, and under the sudden sneak attack, it almost broke through the "Qianyang True Fire" defense on his body and pounced into his body.

Once he was pounced on by this resentful demon head, even with Zhou Yang's powerful divine soul, he didn't dare to say that he could block his attack.

Fortunately, the "Qianyang True Fire" was powerful enough, and the various monsters encountered along the way failed to cause any damage to Zhou Yang.

From this, we can also know why Guo Jinhong let him participate in this dangerous operation as a Purple Mansion monk, and also let him take the lead and open the way.

I don't know what means Liu Boyong has for accurate navigation, Zhou Yang has moved forward all the way under his guidance, and he has not gone through a fork once, when he rushed all the way in the underground demon cave passage for nearly half an hour, his vision suddenly widened, and he entered a huge underground cave hall.

He looked at it at a glance, the head of this underground cave hall was at least 3,000 zhang, nearly 2,000 zhang wide, and as high as 100 zhang.

In the center of these black sarcophagi is a circular altar with a height of more than ten zhang, and on top of the altar is a dark golden coffin with a length of three zhang and a width of half a zhang.

The dark golden coffin does not look like some kind of stone, nor does it look like metal, and it is also different from wood, which can be described as neither gold nor stone nor wood.

Generally, this kind of thing that looks like it is not gold, stone, or wood is definitely a rare and rare thing in the world of cultivating immortals.

Sure enough, when Zhou Yang was still thinking about what material the dark golden coffin was made of, Liu Boyong, who came to the cave hall behind him, had already opened his mouth to shout out the origin of the dark golden coffin.

"Netherworld Ironwood! Could that be the legendary Netherworld Ironwood?

Nether Ironwood!

Zhou Yang's attention was instantly attracted by the name of this strange spiritual creature.

Many things in this world have the word "Netherworld" in their names, but Zhou Yang knows that most of those spiritual objects with the word "Netherworld" in their names are native to this world, not the legendary Netherworld.

But he looked at Liu Boyong's shocked expression now, and listened to the words in his mouth, it was obvious that this so-called "Netherworld Ironwood" was likely to really come from the legendary Netherworld!

"Senior Brother Liu, do you recognize the origin of the coffin?"

When Zhou Yang was curiously about to ask Liu Boyong about the details, Yan An couldn't help but ask about it first, obviously he didn't know what the "Netherworld Ironwood" was before.

"If the legend is true, the material used to forge that coffin should be the legendary sixth-order yin-attribute spiritual creature [Netherworld Ironwood] that only grows in the Netherworld!"

"I've only seen a record of this [Netherworld Ironwood] in a senior monk's travelogue, legend has it that this thing only grows in the Netherworld in a place where the corpse qi is thick, and it can only grow one foot every thousand years, and its texture is as hard as sixth-order spiritual gold, and it is a refining treasure that the demon monks worship as a holy relic!"

Liu Boyong was talking about the origin of "Netherworld Ironwood", and his eyes were shining as he looked at the dark golden coffin, his eyes full of greed.

That's a sixth-order spiritual object!

Although the sixth-order spiritual objects of the Yin attribute can only be maximized by the Demon Dao Cultivators, it does not affect their preciousness.

And what Liu Boyong didn't say is that the coffin made of "Netherworld Iron Wood" has a special "life extension" effect.

If there is an immortal cultivator who seals himself in a coffin refined by "Netherworld Ironwood" before the arrival of the Longevity Limit, he can temporarily seal the passage of his Longevity, and will not sit down because of the arrival of the Longevity Limit.

Liu Boyong is more than 900 years old, and he is not far from the longevity limit of the Jindan period monks.

Originally, he had lived for so many years, and when there was no hope of being promoted to Yuanying, he had long been mentally prepared for the arrival of the longevity limit.

But there is only one thing he can't put his mind at ease, that is, he is worried that the "Heavenly Sword Gate" established by himself will decline and break the inheritance because there is no Jindan period monk to sit in the sect after he sits down.

Originally, the arrangement he made for this was to do things for Guo Jinhong in exchange for a certain degree of protection from the other party.

But now after seeing this coffin made of "Netherworld Ironwood", he had another thought in his heart.

If he can capture this coffin, he can seal himself in the coffin ten or twenty years before the arrival of the Shouyuan limit, hide the coffin in the sect, and then fake his death to announce that he has been seated.

In this way, if someone fights his Heavenly Sword Gate for this reason, he can kill it at a critical moment, take the enemy by surprise, and eliminate these enemies who are vainly trying to subvert his Heavenly Sword Gate inheritance.

"According to Senior Brother Liu, since this [Netherworld Ironwood] is so precious and rare, shouldn't that black and evil real person be buried in that coffin?"

When Liu Boyong was thinking about how to put the dark golden coffin in his pocket, Yan An's words made his face change and he was stunned in an instant.

Oh, yes!

He knew that the "Netherworld Ironwood" coffin had the effect of sealing the passage of longevity, so would the "Black Evil True Man" who refined this coffin not know?

In this way, if what Yan An said is true, then the coffin is buried with the "Black Evil True Person", the Yuan Infant Evil Cultivator, whether the other party has really sat down and fallen, it is still unknown!

"Senior Brother Liu, why is your face so ugly? Could it be that you have found something?"

Zhou Yang had been paying attention to Liu Boyong's expression, and when he saw the sudden change in the other party's face, he immediately realized something, and hurriedly inquired.

"It's nothing, it's just that when I heard Senior Brother Yan's words, I think of the life of the black demon again, if it is really as Senior Brother Yan said, the remains of the other party are in that coffin, I'm afraid it won't be easy for us to complete the task assigned by the master!"

Liu Boyong's face changed, but he didn't tell the truth truthfully, but just used a subtle word to remind the danger.

"What does Senior Brother Liu mean is that he is worried that the corpse of the Black Demon will be transformed?"

Yan An frowned, and was really led by Liu Boyong's words to think of something else.

The so-called "corpse transformation" means that some high-ranking monks are reluctant to destroy the treasures they have accumulated in their lives before they sit down, and they don't want people to easily get these treasures, so they do something to their corpses before they sit down.

In this way, when someone enters their place of residence and collects the treasure they have left behind, their corpse will suddenly burst out to attack the treasure collector.

With what the "black real person" did before his death, it is normal for the other party to leave this method before he dies.

However, Zhou Yang always felt that Liu Boyong's words were a little untrue, and he felt that the other party was hiding something.

After all, "corpse transformation" is not a difficult thing to guess, in fact, when he saw the dark golden coffin, he also had this speculation in his heart.

Therefore, he felt that if it was just a simple "corpse transformation" conjecture, it should not make Liu Boyong, an eighth-layer monk of Jindan, so discolored.

It's just that these are his feelings and speculations, and he can't declare them, and he can only secretly raise his vigilance at the moment and don't say anything.

At this time, the most regrettable thing in his heart was that he didn't bring Xu Song's old ghost over, otherwise, with the other party's knowledge and attainments in the Demon Dao, he should be able to give him a lot of safety advice in this environment.

"Then according to Senior Brother Liu, what should we do next?"

Yan An frowned and looked at the hundreds of sarcophagi quietly in the underground cave hall, and looked at Liu Boyong with a worried face and asked about his next move.

Strange to say, after they entered this underground cave hall, there were no more demon corpses and ghosts to attack them, as if this was a forbidden place that those demons and ghosts outside must not set foot in.

"We ......"

Liu Boyong heard Yan An's inquiry, and just wanted to open his mouth to say his plan, but before he finished speaking, his face moved, and he suddenly stopped talking and looked in a certain direction in the depths of the cave hall.

Well?

Seeing this, Zhou Yang and Yan An couldn't help but be stunned, and then involuntarily followed his gaze.

I saw that at the edge of another cave hall more than 1,500 zhang away from them, three Jindan monks wearing vermilion robes suddenly walked in from a passage behind them.

"It's the red-eyed old monster from the Fire Sect, and they're here too!"

Yan An let out a low cry in his mouth, and told the origin of the three newly appeared Jindan stage monks.