I, the deposed prince, signed in the imperial mausoleum for a thousand years

"Huh? These stones..."

While walking, Qin Feng suddenly noticed the stone walls on both sides of the road. He was slightly taken aback, and then asked in surprise, "Is it all Heiwulongyan Mine?"

The ore he mentioned is a rare casting material, which can be used to forge spirit weapons of the Wuji Realm.

Especially for forging pill furnaces of the same grade, the effect is excellent, and the temperature of the pill furnace can be increased by more than two times.

"Young Master Qin, you can see it at a glance? The old man only noticed it when he entered the cave for the third time. It's really embarrassing!"

The Supreme Elder of the college couldn't help but sigh with emotion, then nodded and said: "The purity of these ores exceeds any black Wulong rock mine I have ever seen, and..."

After a pause, he continued: "According to my speculation, the entire mountain where this cave is located, except for the layer of rock on the surface, is filled with black Wulongyan ore inside."

"So, this place is simply a treasure!" Qin Feng said with a light smile.

If it was just a few pieces of ore, even if it was precious, it would not make him express such emotion.

But this is a whole mine, I am afraid that even if the ancient holy land family sees it, they will want to fight for it.

"It is indeed a treasure, and the dean and the others also attach great importance to it."

The Supreme Elder of the Holy Spirit Academy nodded, and then said: "Within half a month, Ji Mo will come with the holy artifact and sit here to prevent it from being snatched by other holy land families."

There are three sacred artifacts in the Holy Spirit Academy, and it is definitely very important to ask Vice President Ji Mo to bring one and guard it here for a long time.

"If necessary, you can cooperate with the Fox Clan. They have been operating in the Nine Profound Realm for many years and should be able to help you a lot," Qin Feng reminded.

Although the strength of the fox clan is not strong, even the strongest among them is far from being able to compare with a random elder of the Holy Spirit Academy, and there is a world of difference.

However, they are very familiar with the situation in the Nine Profound Domain and several nearby domains, and they can help the Holy Spirit Academy a lot.

"We have always wanted to find a cooperative force in the Nine Profound Realm, but we are not familiar with the Fox Clan, and we don't know if they are trustworthy." The Supreme Elder of the Holy Spirit Academy said helplessly.

Although he knew that sooner or later, news of this mine would be leaked.

But as long as it leaks one day later, they can mine one more day with peace of mind.

"Don't worry, I'll give you a letter later. When you hand it over to the head of the Fox Clan, they will definitely cooperate with you sincerely and won't leak the news." Qin Feng said.

"Mr. Qin is familiar with the Fox Clan?" asked the Supreme Elder of the Holy Spirit Academy.

"Very familiar."

Qin Feng said: "Before going to the ancient spirit domain, I have been living in the fox clan."

"In that case, I will send someone to the Fox Tribe later to discuss cooperation." The Supreme Elder of the Holy Spirit Academy immediately said happily after hearing the words.

Although it was only the first time he met Qin Feng, he had heard too many things about Qin Feng, and he had complete trust in Qin Feng in his heart.

But at this time, Qin Feng and the others had already reached the depths of the cave, and the scene in front of them suddenly became clear, which was a large open and flat ground.

The road to this cave was originally hundreds of feet high and tens of feet wide, and it was extremely wide along the way, but the scene in front of me was so vast that it could almost accommodate half a city.

And on this open ground, the most obvious thing is an altar, and around the altar, there are twelve pillars with a height of hundreds of feet.

Looking from a distance, Qin Feng found that these pillars exuded a faint light, and carved with various mysterious and complicated patterns, which were scenes of fierce battles between different monster races.

The Red Eagle Clan, Demon Wolf Clan, Golden Winged Eagle Clan... Some are still powerful monster clans, while others have completely declined.

But these monster races all have a common feature, that is, there is a collar similar to a golden hoop on the neck, which is full of mysterious and complicated inscriptions.

"A few months ago, when I passed by this cave, I heard the roar of thousands of beasts inside, as if it was the sound of thousands of troops galloping. It was earth-shattering. After I walked in, I saw the scene in front of me."

After a pause, the Supreme Elder of the Holy Spirit College continued: "It's just that that kind of movement has never happened since I first came in."

The vision he told Qin Feng earlier was what he just said.

"The monster clan on the twelve stone pillars, could it be the generals under the demon emperor's command in the past?"

Qin Feng guessed in his heart, and then wondered: "But why is there no fox clan..."

This made him a little confused, because the fox clan was definitely a powerful race a long time ago, even stronger than the twelve races above.

"There have always been rumors that the Demon Emperor Mountain Range is where the Demon Emperor is buried, but for so many years, no one has found any clues related to the Demon Emperor's tomb."

The Supreme Elder of the Holy Spirit Academy said in a deep voice: "I suspect that this altar is very likely to be related to the tomb of the Demon Emperor."

"Have you tried to make this altar work again?" Qin Feng asked.

"Tried more than once, but never succeeded."

The Supreme Elder of the Holy Spirit Academy said helplessly: "To activate the altar, it seems that twelve different forces need to be injected into the twelve pillars."

Hearing this, Qin Feng walked up to the towering pillar and cast his divine pupils to inspect it.

After a while, he realized that what the Supreme Elder of the Holy Spirit College was right in that each of the twelve stone pillars required different special powers to be awakened.

"Could it be that the law of heaven and earth in the bronze plate is needed?"

Qin Feng guessed, and murmured: "But the law of heaven and earth in those bronze fragments is exactly the same power, and it can't awaken twelve different stone pillars!"

But even though he thought so in his heart, he still took out a few bronze plates and wanted to try.

"Om..."

Qin Feng activated the bronze plate, a law of heaven and earth completely different from this piece of heaven and earth, and then spread, and under his control, entered the stone pillar.

It's just that the stone pillar didn't respond at all, it was as calm as usual.

Afterwards, Qin Feng tried to inject strange fire and spiritual energy into the stone pillar, but it also did not cause any reaction.