In the ancient demon hall with a radius of nearly 100 zhang, tens of thousands of spirit cards are neatly placed! On the front of each spirit card, the name of a deceased person is engraved, and on the reverse side there is a portrait of the demon body that can be seen everywhere in the ancient demon city. (・)

Tens of thousands of spirit tablets occupied almost all the space of the Ancient Demon Palace, and only in the innermost center was a tall and large heavy sarcophagus! At the top of the coffin lid of the sarcophagus, a bright red sealing array stone was pressed.

Seeing this situation, Lin Feng knew that this should be the cemetery holy land of the Ancient Great Sect, but its location was a little strange, and it actually regarded the most located building in the Ancient Demon City as a place to display spirit cards. Knowing that the identity of the deceased in the giant coffin would definitely not be simple, Lin Feng wanted to exit the Ancient Demon Hall as soon as possible so as not to cause unnecessary trouble.

But before he could turn around, the huge stone door of the Ancient Demon Hall had already closed automatically, and at the same time, the entire surroundings of the Ancient Demon Hall and the roof were all shrouded in an extremely powerful Confining Array, and Lin Feng could never think of going out again!

Secretly said "Oops", Lin Feng smashed towards the stone gate with all his might, but unfortunately the stone gate did not move, whether it was using the giant force technique or the magic weapon to hit, he could not shake the imprisoning magic array at all, and finally he had to stop, panting and looking at the large group of spirit cards in front of him, and began to beat the drum secretly in his heart.

After staying for half an hour, there was no sound in the Ancient Demon Palace, Lin Feng left the stone gate with a nervous expression, and tentatively walked towards the huge sarcophagus, the spirit cards were closely connected in rows, and the height was just below the knees, but the adjacent ones were only a few inches, barely enough for Lin Feng to walk in them. [~]

Lin Feng didn't notice at all that as soon as he entered the neat and orderly forest of spirit cards, the ground of the Ancient Demon Hall had quietly changed, and there was a black qi slowly spreading at the root of all the spirit cards, and the Ancient Demon Hall was also filled with an undisturbing evil aura, but Lin Feng's attention was all on the huge sarcophagus.

When Lin Feng walked to the center of the Ancient Demon Palace, there was a sudden violent tremor under his feet, and tens of thousands of spirit cards actually shone at the same time, and then, one after another Ancient Demon Souls emerged from the pale cyan glow!

These ferocious and brutal ancient demon souls had been living in those spirit cards, and they had been sealed by some powerful spell, Lin Feng entered the ancient demon hall and inadvertently touched these prohibitions, allowing these demon souls in the spirit cards to get out of trouble!

Tens of thousands of ancient demon souls, like bubbles that automatically float, flickered with a strange ghost light from the spirit card, but in each bubble, there was an extremely vicious face, they were like greedy demons, swept towards Lin Feng from all directions, scrambling to seize Lin Feng's body and devour his soul!

However, Lin Feng stood motionless, as soon as all the ancient demon souls approached his body, they were all captured by the immortal net without exception, this situation was like a long siphon absorbing water, colorful ghost lights rushed from all directions, but in the end, they were completely absorbed by Lin Feng.

In just a few moments, the Ancient Demon Hall regained its calm, and in Lin Feng's immortal net, there were tens of thousands of Ancient Demon Souls at this time! With the primordial soul power contained in these Demon Souls, Lin Feng could tell that their cultivation during their lifetime was generally very high, most of them were Foundation Building Stage and Dan Stage Cultivators, and some had even reached the Yuan Infant Stage realm!

The ancient demon soul was all captured by the immortal net, and the tens of thousands of spirit cards in the ancient demon hall were all shattered in an instant, after the thrilling moment just now, Lin Feng wiped the sweat on his forehead in shock, and at this time he noticed that on the ground of the demon soul hall,

There were traces of black demonic qi slowly rising, and after careful inspection, he realized that after those spirit cards were broken, they left pits and cracks on the ground one by one, and these demonic qi came out of the cracks and pits. [~]

Then Lin Feng discovered a fact that made him tremble, that is, he casually picked up more than a dozen fragments of spirit cards, and from the spiritual breath contained on them, he could distinguish that this was actually one of the six divine trees recorded in the Bailing Bamboo Slips: Requiem Wood!

The Requiem Wood is a near-extinct existence in the cultivation realm, even in the ancient period, it is also a rare treasure that can be called a masterpiece, but in this ancient demon hall, there are tens of thousands of requiem trees with many feet long are used as spirit cards! No wonder these ancient demon souls can survive for 10,000 years without collapsing, the fundamental reason is that they live in the Requiem Wood to keep their spirit!

Being able to collect so many requiem trees for his own use, the identity of the owner of the Ancient Demon City is indeed incredible! It's a pity that these tens of thousands of requiem trees have been broken, and they have already been imprisoned before, so they can no longer be recycled, and Lin Feng's attention was fixed on the huge sarcophagus that only existed in the Ancient Demon Hall at this time!

Despite the confinement of the Sealing Array Stone, the sarcophagus still emitted a terrifying evil aura, and with Lin Feng's divine sense, he couldn't even penetrate the isolation of the Confining Array to see the situation inside the sarcophagus.

After turning around the sarcophagus a few times, Lin Feng found sixty-four array stones on the walls and corners of the sarcophagus, the largest of which was in the center of the coffin lid, and the color was also the most vivid, but it was not the eye of the imprisoning array, but the "heart of the array"!

With Lin Feng's strength, it was simply wishful thinking to break this magic circle, needless to say that it was him, even if he was a great cultivator in the Yuan Infant Stage, he was powerless in front of this imprisoned magic array!

According to the "Xuanji Treasure Book", any magic circle that appears with a "formation heart" is a kind of reverse magic circle, that is to say, the owner of this magic circle is not outside the sarcophagus, but inside the sarcophagus! The owner of the sarcophagus used the magic circle to imprison himself, and the array eye was also left in the sarcophagus, even the most clever formation master could not open this sarcophagus!

Lin Feng frowned and pondered for a moment, and finally took out the "Xuanji Treasure Book", found the relevant statement of the reverse confinement circle from it, and then tried to find out where the eye of this kind of formation was!

In anyone's eyes, Lin Feng's move was undoubtedly in vain, because even if he determined the true location of the formation eye, it would be useless at all. No matter where the Formation Eye was, it was always inside the sarcophagus, and due to the obstruction of the Imprisonment Circle, he couldn't break the Formation Eye from the outside.

According to the "Xuanji Treasure Book", if you want to break this array, unless the sarcophagus owner himself breaks the array from the inside, or a powerful monk uses great mana to forcibly break it from the outside.

But any type of imprisoned magic circle, if you want to break it outside, you must have a condition, that is, the mana used to attack must be higher than the imprisoned power of this array, otherwise no matter how many people there are, the attack power cannot be higher than the imprisoned power of the magic circle, and it still can't shake it in the slightest!

However, judging from the heaviness and material of the sarcophagus, as well as the sixty-four powerful array stones arranged on it, I am afraid that it is the great monk of the Yuan Infant Stage, and it also requires several people to cast spells together to compete with the imprisoning power of this array, and it also takes a long time of stalemate to gradually wear away the powerful spiritual power contained in the circle.

Lin Feng immersed his divine consciousness in the Xuanji Treasure Book for half an hour, during which he did a detailed study of the types of magic circles made of sixty-four array stones, but none of them were similar to the confinement magic circle in front of him, and the Xuanji Treasure Book only gave a few of the most common examples, and more types of mysteries needed Lin Feng to explore on his own.

Withdrawing his divine consciousness from the jade slip, Lin Feng walked to the giant coffin and looked at the sixty-four array stones intently, at first he only felt that they were disorganized, as if they were placed on the giant coffin at random, but soon he saw some clues, and felt more and more the complexity and profundity of this magic circle.

The exposition of the Xuanji Treasure Book told Lin Feng that all the formation paths must take the array eye as the core, and all kinds of changes depend on the subtle combination between the array eye and other array stones, and when refining the array stones and the array eye, they are all supported by established laws and laws, according to this theory, Lin Feng can do the opposite, and determine the general direction of the possible existence of the array eye through the connection between the various array stones.