The Vault of the Empire, when it was designed to open, used two schemes.

The first method is to simply control the spell. After summoning the puppet spirit above the stone gate, the bloodline descendant can rely on the command spell to directly open the stone door. The second way is that when the spell is also lost, the door can also be opened by sacrificing a large amount of blood from the Lu family's bloodline.

In order to ensure that nothing goes wrong, two sets of schemes coexist in the entire vault, and either of them can be opened.

Lu Chengfeng must admit that the ancestors were indeed very thoughtful.

Some special spells handed down by the royal family can only be known to the most core Lu family children, and there is a soul ban, so there is no need to worry about the suspicion of leakage. If there are core children of the royal family who survive, they can be activated directly through the spell. As for the latter, as long as you have the blood of the Lu family and know the location of the secret vault, you can also come and open it by sacrificing blood. However, in the case of thin-blooded descendants, a large share of blood is required to be sufficient.

This means that even if the non-core children of the Lu family accidentally know about this place and have evil thoughts in their hearts, it is difficult for them to open the secret vault alone and steal the treasure.

However, I'm afraid that the ancestors didn't expect that there would be core disciples who could be reborn into other people, right?

Lu Chengfeng looked solemn, knocked lightly three times on the huge stone gate, called out the puppet soul on the stone gate, and then recited the spell to open the secret vault in a clear Gu Tianfeng language.

Previously, Lu Chengfeng borrowed the spell of Kazan's evil god power, which was at the same level as this spell. It doesn't make a difference whether it's the special runes that make up the spell, how important they are, or how difficult they are to remember. After a long spell, Lu Chengfeng clapped his hands and pressed on the center point of the stone gate, pouring fighting qi into it, and shouted at the same time: "Open!"

"The spell is verified, and the entry is permitted. ”

The stone door flashed green, and no sane stone gate puppet gave permission in a mechanical voice. Then, Lu Chengfeng heard a dull and continuous sound of the machine rolling. With an invisible force, the entire mountain shook slightly. I heard only the sound of rattling, and a large amount of earth and gravel rolled down from the top of the mountain under the tremor.

If you don't know the truth, most people will think it's an earthquake.

Under the action of the mountain body, the stone gate weighing 10,000 catties shook violently and began to slowly rise. But under Lu Chengfeng's happy gaze, the stone gate stopped moving after it was lifted up five centimeters with difficulty. The puppet on the stone gate immediately gave an indifferent explanation: "The mountain is deformed, the machine is seriously damaged, and the passage cannot be opened. ”

This sentence was like a bomb, and with a bang, it set off a monstrous wave in Lu Chengfeng's heart.

"The stone door can't be opened?"

The stone gate, which has been reinforced by the Holy Order Mage, has an unimaginable hardness. The mountains around the main gate have also been fully strengthened. Even if Lu Chengfeng had already passed the verification of the spell, and the forcible move would not detonate the passage, but without the strength above the eighth order, he would never be able to penetrate the mountain.

Lu Chengfeng looked at this gap that was only five centimeters open in anger, and fell into a sluggish state for a while.

What was behind the stone gate was too important to him. There are all kinds of exercise cheats and elixir artifacts, although they can't be compared with the treasury of the Tianfeng Empire, but after all, they can provide an opportunity to restore the country. Just think about it, how much help it would bring him if he got all these things. On the way here, he was still thinking about how to use all that resources. Fortunately for now, he is trapped outside the mountain gate, and he can't even get in!

Damn the movement of the earth's crust, damn the power of heaven and earth!

The secret vault built by the ancestors of the Lu family had almost everything taken into account, but they didn't expect the power of nature to be so great. The door of the vault is sure to be unopened, what should he do?

It was so painful to know that the treasure was behind and that I couldn't get it.

Do you want to find someone to work with?

This idea was vetoed by Lu Chengfeng at the first time, and the stake of the Imperial Vault was too great. Not to mention anything else, the two copies of the 108 Dou Zhi Gong Techniques hidden inside alone were enough to trigger a brutal war. It doesn't matter who it is, at this level of treasure, Lu Chengfeng can't be trusted.

However, do you have to wait for your strength to slowly improve to the eighth or even ninth order?

It will take too long, and Lu Chengfeng really can't afford to wait!

He has now stepped into the fifth order, and the Heavenly Wind Dou Qi he cultivates is quite special, so he has the opportunity to recultivate. But if you wait until the time when the ninth-order Dou Qi turns into wings, it is almost impossible to change the completely different exercises. What's more, now the front of the mountain gate has been exposed. Even if Lu Chengfeng covered it up, it was difficult to guarantee that no one could see the abnormality.

Isn't there any other way?

Lu Chengfeng paced back and forth outside the stone gate, racking his brains for a long time, but finally couldn't come up with another way. However, just when he sat down a little dejected and was about to eat something first, a flash of inspiration flashed, and Lu Chengfeng suddenly had confidence.

That's the ornamental iron block found at the Faroe Bay rally!

There is indeed only one entrance to the Imperial Vault. However, the geological movements that have taken place over the past thousand years must have opened other passages in the vault. Otherwise, the contents will never come out. Considering that it was discovered by someone else on the periphery of Tianque Mountain, this proves that there is any power that can spontaneously bring the things in the secret vault outside!

Excited, he circled around and finally fixed his eyes on the mountain stream and river.

The source of this river, from the depths of the mountain range with the secret vault, is an underground dark river. Lu Chengfeng easily thought that it was the geological movement that cracked the secret vault from the center and created a dark river at the same time. The dark river flowed through the vault and eventually flowed to the outside of Tianque Mountain, rolling out some of the things in the vault by the way.

This is the greatest possible, almost and only!

Realizing this, Lu Chengfeng immediately followed the river to the source. After a long day's effort, he found the entrance into the mountain's belly in a ten-meter-wide crack behind the mountain.

Because it is not clear whether there are demonic beasts or poisons inside, Lu Cheng style is not careful. He held the Blue Shadow Thunder Lightsaber tightly, relying on the brightness of the inspired lightsaber to act as a torch, and the Heavenly Wind Fighting Qi was also transported to the extreme. But fortunately, there were no attacks along the way. After walking about a hundred meters into the crooked, narrower and narrower crevasse, the crack came to an end, replaced by cold river water gushing out of the ground.

Could it be?

Lu Chengfeng recalled the topography of the secret vault dungeon and its distribution in the belly of the mountain, and then compared it with the location of the dark river. After inference, Lu Chengfeng found that a few hundred meters away in front of him was likely to be the exit of the underground palace that was cracked. The fluctuation range of this distance may be relatively large, but with the strength of a fifth-order sword master, no matter how bad it is, it can swim back and forth.

After pondering for a while, Lu Chengfeng put away the Blue Shadow Thunder Light Sword, tidied up his clothes, and resolutely jumped into the dark river.

The water of the Dark River is fast, cold, and indescribably cold. Lu Chengfeng jumped in, and he couldn't help but shudder. Ordinary people may not be able to hold up for even a minute or two in such temperatures and flow rates. Lu Chengfeng has the support of the fifth-order fighting spirit, and he is safe for the time being. He just plunged headlong into the dark river, swimming desperately against the rushing current.

In such a dark passage, the vision is almost ineffective, and nothing can be seen. Lu Chengfeng could only rely on his own perception and reluctantly judge the situation around him.

A hundred meters away!

Lu Chengfeng tried to float up, but then he noticed the stones above his head that had been grinded incomparably smoother by the current.

He shook his head and continued to swim forward. After almost another 100 meters, Lu Chengfeng judged that there was a fork in the road ahead through the change and perception of water speed. Dark rivers from two different directions converge here before flowing outside Tianque Mountain. Which way is the way to the secret vault dungeon?

This one, Lu Chengfeng can't say for sure. He could only guess a potentially larger fork in the road based on the general position and direction, and then continued to swim with his head bored.

It's another two hundred meters of zigzags, and the stone wall of the passage is always overhead.

This made Lu Chengfeng couldn't help but become anxious, could it be that his calculation was wrong? Or did the other waterway pass through the crack in the underground palace?

Since there was no accurate map, Lu Chengfeng did not dare to guarantee it. But just as he was about to return the way he came, and then turn around again, the water flow in front of him suddenly became abnormal. Lu Chengfeng was stunned, sped up and swam over, and through perception, he found a suddenly open area in front of him.

"That's it!"

Overjoyed, Lu Chengfeng swam out of the last ten meters, and then floated up violently. What appeared in front of me was a whole new world: the sound of rushing water, the moist but dull air, the half-collapsed underground palace sky, the tilting twelve round pillars, the dim magic lamp, the huge stone gate with hideous demon patterns, and the four sculptures and stone statues holding giant halberds......

This is the connecting passage in the middle of the dungeon!

Lu Chengfeng crawled out of the dark river, looked around, and quickly determined where he was. Although the layout of the vault has collapsed and damaged a lot due to geological movements, most of them seem to be fine. At the very least, the four sculpted statues with giant halberds were still functioning - they were part of the Vault's defenses.

Next to the stone gate on the front, there were three corpses that had been cut to pieces. The corpse was badly damaged, but not completely decomposed. It can be seen that they should not have been dead for long.

Lu Chengfeng immediately realized that someone else had already found this place through the entrance of the Dark River. Unfortunately, they tried to open the stone door without their might, but as a result, they activated the defense system and were killed by the four giant halberd sculptures. Each of these giant halberd sculptures has a seventh-order combat power. After being blessed with special magic, they not only come and go like the wind, but also have infinite power and extremely terrifying destructive power. Even if Lu Chengfeng is now, he can only barely deal with one at most. If the four of them are together, the eighth-order powerhouse will also be hated if he can't do it. After casually kicking away their corpses, Lu Chengfeng shook his head. The secret vault of the Heavenly Wind Empire is also something that such a little person dares to peep into?