Cheng Lingyu was extremely curious, holding the scroll with both hands slowly and exerted force, trying to pull the scroll open and see what was on it.

Previously, Cheng Lingyu tried it outside the hall and he should be able to open the scroll, but it would take a lot of effort.

In view of this, Cheng Lingyu was mentally prepared, but who thought the result suddenly changed, and the scroll unfolded with a slight pull.

"Strange, why did the heaviness disappear all of a sudden?"

The scroll unfolds, and the golden light is dazzling. A woman in colorful clothes appears on the paper, so beautiful that it makes people feel heart-wrenching.

Cheng Lingyu looked at the person on the painting blankly, and he was completely confused.

The woman in this painting is as elegant as a fairy, elegant as a worldly person. She does not look like a painting, but more like a branding of her appearance.

The scroll with golden edges and white background is shining with a flash of spiritual light. The woman in the painting looks very beautiful at a high level. If you look closely, you will find that it is made up of Taoist patterns and spiritual marks intertwined, integrated from top to bottom, full of Taoist rhyme, and flowing with the breath of Taoism.

"This...this...is too amazing. This painting is her manifestation of a spiritual shadow. Is she the owner of this castle?"

Cheng Lingyu was shocked and thought about the origin of the woman in the painting.

There is only one woman on the scroll, and there are no other scenery or handwriting, so it is difficult to judge.

Looking away, Cheng Lingyu looked around, and everything he saw surprised him.

It turned out that just as he opened the scroll, the two palace gates were closed at the same time, and spiritual patterns appeared on the walls inside the palace and on the stigmas, which evolved into mysterious characters in the void and flew away.

This situation was something Cheng Lingyu had never expected before, so he looked so surprised when he looked up. After careful observation, Cheng Lingyu slowly returned to his calmness. He rolled up the scroll and found that the spiritual patterns were fading away quickly, and the palace gate opened again.

"Isn't this the best place to practice when you open the scroll? "

Cheng Lingyu tried several times, confirmed the news, and began to think about the matter of cultivation.

This castle is very conspicuous. He actually has no idea how defensive the palace is. If he is disturbed at the critical moment of cultivation, wouldn’t he give up halfway, and it would be more than worth the loss?

The big bluestone in the hall is very mysterious, as if it contains infinite energy, which is of great help to Cheng Lingyu to open up the tenth cave. It is probably not easy to find another good place like this.

After hesitating for a long time, Cheng Lingyu opened the scroll again, then took out the Feihua Xueyue Sword and slashed towards the palace gate with a sword.

This is a perfect top-grade spiritual weapon with extremely strong attack power.

Cheng Lingyu showed no mercy and launched the strongest attack.

The sword light flashed, and ripples appeared on the palace gate, and spiritual patterns appeared automatically, turning into waves, and resolving this domineering sword completely.

"It seems that the defense effect is stronger than I thought. It is probably not easy for others to attack from outside."

Cheng Lingyu felt relieved now. He let go of the scroll in his hand and it flew into the air automatically, swaying slightly, releasing a special fluctuation.

In the hall, various spiritual patterns and Taoist marks rushed towards the scroll, like a key, opening up a mysterious world.

Cheng Lingyu walked around the hall, and sixteen cultivators in the blood martial arts realm died here, leaving behind many broken limbs and broken arms, as well as storage rings, which were collected by him one by one.

There are also three fragments of spiritual weapons, which Cheng Lingyu also put away, preparing to untie the second seal of the Underworld Magic Sword in the future.

After walking around, Cheng Lingyu returned to the big bluestone and began to use the art of origin to deduce the process of opening up the ten caves.

This is a simulation and deduction, which requires extremely accurate control and analysis capabilities, and there is no difference.

Cheng Lingyu deduced it dozens of times in a row, and each time he could find some shortcomings and deficiencies, so as to modify and improve them.

This is a meticulous link and must be very cautious, because there are very few people who have been able to open up ten caves throughout the ages, but countless monks have died on this road.

Cheng Lingyu collected a lot of resources, and he also calculated these resources during the deduction process. How to successfully open the Ten Cave Heavens as fast as possible and most effectively is his most concerned issue.

Cheng Lingyu was not in a hurry at all. He spent half a day deducing hundreds of times, and understood the methods and processes extremely thoroughly. He also took out all the resources he had and selected some things he needed to use.

This includes one hundred and eight emeralds and twelve rubies, which are all good things found in ancient ruins.

Hundreds of demon cores, dozens of spiritual medicines, and countless pills almost cost him two-thirds of his savings.

This is still in this palace, with Daqingshi helping him. If there is no such special environment, Cheng Lingyu would probably have to spend all his resources to have the chance to complete it.

After everything was ready, Cheng Lingyu removed all his clothes and put them back into the storage ring.

Then he swallowed various pills, spiritual medicines, and demon cores in one breath, sat on the big bluestone, and placed rubies and emeralds around his body, officially starting the process of opening up the ten caves.

This is a difficult and long process that requires many conditions to be met.

First of all, the Nine Cave Heaven is about to reach its extreme, and Cheng Lingyu has completed this point.

Secondly, the accumulation of resources requires a large amount of resources that ordinary people cannot afford.

Third, the physical ability to withstand, is the most critical, because many monks have died on this path throughout history, overestimating their abilities in this regard.

In the hall, bluestone shines, and in the misty light, runes of the great road are rolling.

The scroll hovered above Cheng Lingyu, slitting rays of golden light, containing some secret power, as if protecting the Dharma and calming his mind.

Cheng Lingyu's mind has no distractions, and his body changes from no light to luminous, and then to transparent, and the changes are amazing.

The big bluestone contains infinite energy and is quickly entering Cheng Lingyu's body at this moment, combining it with the various pills, spiritual medicines, and demon cores he took to produce a powerful diffusion effect.

A series of caves appeared outside Cheng Lingyu, like a circle entangled outside him, swallowing and spitting out the energy of heaven and earth, absorbing various energy in the palace, and increasing motivation for Cheng Lingyu.

This is a process of accumulating momentum and rising, which alone consumes Cheng Lingyu's day and night.

When the power in Cheng Lingyu's body climbed to the extreme and could no longer accommodate more energy, he took a critical step and forced the tenth cave with supreme perseverance.

When Cheng Lingyu opened the ninth cave heaven before, he felt that it was more laborious than the previous eight cave heavens.

Now this tenth cave heaven is a hundred times more laborious and more difficult than the ninth cave heaven.

It was like a mountain pressing on Cheng Lingyu's head. He wanted to raise his head, but it was obviously not easy.

Cheng Lingyu was very determined, and roars came from all over the world. It was the pyramid shaking, mobilizing all the strength in his body and forcibly attacking the tenth cave heaven.

Cheng Lingyu used various magic tricks, based on thousands of layers of snow, and combined various means such as the Burning Heaven Art, the Sky Split Art, the Origin Art, the Dream Demon Eye, and other methods to attack with all their strength.

Everything is difficult at the beginning, and the opening of the tenth cave heaven is far beyond Ling Yu's expectations. Although he deduced it hundreds of times, there is always a gap between the actual process and the deduction process.

Fortunately, Cheng Lingyu was determined and not discouraged. He continuously transformed the energy in his body and absorbed the spiritual energy from the big bluestone. It took him seven days and seven nights to finally open up a small piece of open space in the tenth cave heaven.

In the hall, various Taoist patterns and spiritual scars were attracted by Cheng Lingyu and rushed towards him.

The scroll in the air was swaying slightly, as if a fairy among flowers was looking down at Cheng Lingyu.

A spiritual map was automatically formed on the big bluestone, which was located under Cheng Lingyu, continuously providing him with power.

Outside the castle, many monks gathered, and the eight monks who escaped before brought some news.

Some latecomers were unwilling to give up and broke into the castle, crossed the first gate, but were blocked outside the gate, and let you attack, the palace was as stable as Mount Tai, unscathed.

From a distance, the ancient castle was shining brightly, and a huge figure appeared above the castle, looking down at the earth like a god.

The huge figure was a woman's figure. She couldn't see her face clearly, but she released an invisible shock.

How can such strange phenomena appear in ancient ruins not attract attention?

Unfortunately, those who entered the castle could not enter the palace, and they didn't know what was being sent inside, so they had no choice but to wait.

Cheng Lingyu didn't know this, he was fully expanding the space scope of the tenth cave heaven.

The Tenth Cave Heaven is obviously different from the other nine cave heavens. Every inch of space is opened, the difficulty is ten times greater than that of the Ninth Cave Heaven, which makes Cheng Lingyu particularly difficult.

Fortunately, the big bluestone provided a huge amount of energy and continuously provided power for him.

Compared with opening up a cave, it is difficult to expand space, but it is obviously easier.

In the next ten days, Cheng Lingyu worked day and night, expanding the scale of the tenth mouth cave heaven to more than five times that of the ninth mouth cave heaven. Who would have thought that he had not reached the extreme yet?

Cheng Lingyu was speechless. This tenth mouth cave heaven was indeed a monster. Although it was difficult to open up, its plasticity was too amazing.

Cheng Lingyu is a person who pursues perfection. He continues to practice without distractions and ignores the loss of time at all.

As the tenth cave sky became larger and larger, Cheng Lingyu's overall strength continued to improve, and the speed of expanding the space quickly increased.

Five more days passed in a flash, and the tenth cave sky finally took shape slowly and could not continue to expand, reaching its ultimate.

The space size of the tenth cave heaven is nine times that of the ninth cave heaven. In other words, the total capacity of the first nine cave heavens is equivalent to that of the tenth cave heaven.

When the tenth cave heaven was fully formed, the entire palace shook violently, and the big bluestone under Cheng Lingyu's seat had changed from blue to gray, which was caused by the devour of energy.

[Author’s off-topic]: I wish you all a happy Mid-Autumn Festival!
Chapter completed!