The group of five people walked towards the center of the hall, and the yin energy became deeper and deeper.

"How should I collect that demon sword?" Sun Deng asked.

Everyone looked at each other, obviously no one knew how to collect the demon sword.

Xu Yang said: "Now, this refining array is still operating, so there must be energy support. Let us take out the energy first, let the array stop, and then make plans."

The others agreed, and Shen Yufeng smiled and said, "As soon as the formation stops, the demon sword may be born automatically."

Under the large tripod that gave birth to the demon sword, there are nineteen mysterious trajectories crisscrossing. At the intersections, milky white crystals are embedded, and each crystal emits white light. Before getting close, the full mysterious energy rolls out.

"Oh my God, this should be the legendary 'mysterious crystal', right?" Shen Yufeng took a breath and said in surprise, "The mysterious crystal that is more precious than the superb mysterious stone, even the worst mysterious crystal can be compared with ten times or a hundred times the superb mysterious stone, which contains abundant and pure mysterious energy."

"These mysterious crystals should be the energy core of this formation, and they must be taken out." Sun Deng said.

Shen Yufeng said: "I'll try it."

He summoned the Feng Python and rushed to the bottom of the cauldron with a roar.

"Be careful!" As soon as Xu Yang said it, he saw a powerful white light suddenly burst out from the nineteen mysterious trajectories.

The wind python was shot by two white lights, passing through the body, and two transparent holes appeared. Shen Yufeng groaned, took two steps back, and blood was leaking from his nostrils.

"These nineteen mysterious trajectories are a mysterious formation that cannot be cracked by brute force." Xu Yang squatted down, focused on observing the formation patterns, and said.

Xu Yang has mostly seen the formations passed down from the Golden Age, the weapon refining formations. However, the complexity and mystery of this formation is beyond his knowledge.

"Overall, it seems to be the trend of the 'Celestial Fire Purity' array, but it has a slight illusion. Besides, the Tianhuo Purity Formation is the most yang and strong, and this array collects Yin evil, but it is evil and weird."

"Xu Yang, I have a book here, which should be helpful to you." Shen Yufeng took out a yellowed secret book, "Hehe, without this book, I wouldn't be able to open the gate of the underground palace."

Xu Yang took over the book. The cover of four ancient characters "Yinxuan Catalogue".

Xu Yang sat cross-legged and turned over one by one.

"It's actually a secret to teach the way of runes." Xu Yang was shocked and began to pay attention to the book.

The outline of [Sin Xuan Catalogue] describes the principles of runes, mysterious patterns and array patterns.

These three nouns have similarities, but they all have differences.

Runes are the foundation, and are the trajectory of the wonderful principles of heaven and earth. Runes are used on mysterious weapons and evolved to a certain extent. They are "mysterious patterns"; runes are used on formations and evolved. They are "former patterns".

The mysterious person can show runes through music, seals, etc., which conforms to the wonderful principles of heaven and earth, thereby inspiring the power of heaven and earth.

Xu Yang has read many secret books, and those who are not as thorough as this [Sinxuan Catalogue] about the Way of Runes.

After turning over the outline, there are three hundred formations and there are notes below. However, the notes are very simple and people who do not have a certain rune basis will not understand it.

Xu Yang had a good foundation. He read it with relish and turned it over one by one.

"Xu Yang is really patient. I will have a headache after watching that kind of ghost painting talisman." Shen Yufeng said. He wanted to take the book directly to the treasure house area for redemption, but he changed his mind later.

Xu Yang didn't waste much time. Before he could finish reading the three hundred formations, he turned to the back.

After the three hundred formations, there are introductions to various strange formations and residual formations. Xu Yang is most familiar with the formations in front, but he doesn't know much about the various strange formations behind.

"Hey, the formation is transformed into a formation? Yin and Yang are combined?" Xu Yang suddenly saw these words, and suddenly became enlightened in his doubts. He continued to read.

The other four people dared not disturb Xu Yang, for fear of affecting him to break the formation. Now the entire team is counting on Xu Yang Energy to break the formation.

After closing the Yin Xuan Catalogue, Xu Yang looked up at the cauldron. Below were nineteen mysterious trajectories, flashing white light.

"I see."

Xu Yang smiled slightly and said, "This is a formation that is used. The shell is the formation form of the 'Sky Fire Purity', but the intersection of the three key array patterns has been changed, and the yang turns into the yin! This formation is the 'Three Yins Killing God' formation!"

"What a domineering formation, it sounds like a killing formation." Shen Yufeng said.

Xu Yang smiled and said, "This Three Yin Divine Killing Formation can be used as a killing formation or refining weapons, with endless wonderful uses. In this Yin Evil Land, the Three Yin Evils are constantly collected and injected into the demon sword, and finally condensed into three demon eyes, each with magical powers and infinite mystery! The name of the demon sword should be called the "Three Yin Divine Killing Sword"! The power exceeds the heavenly level mysterious weapon."

"Surce the Heavenly Level?" The four of them took a breath, "Isn't that a holy level mysterious weapon?"

Xu Yang shook his head and said, "I don't know. I have now understood the trend of the 'Three Yins Killing God Formation'. I can break the formation at any time and take out the Xuan Crystal. There may be changes at that time, so be careful."

The others nodded and said they were ready.

Xu Yang took two steps forward, then took three steps to the right, and then walked straight to the front of the left, all the way to the side of the Three Yin Divine Killing Formation.

"So weird, do you have to go like this?" Shen Yufeng tried to walk straight, but after taking two steps, he saw white light radiating from the formation and shooting towards him.

Shen Yufeng was shocked and flew out in a mess, avoiding the white light of the formation.

Xu Yang said without looking back: "You should be glad that this is a weapon refining array, but it is also a killing array. If the Three Yin Divine Killing Sword had not been formed, the power of the formation was extremely weak. You just trespassed into the formation, and you would definitely be shot by white light and turned into pus and blood."

"Grandma, it's so evil." Shen Yufeng was still scared.

Xu Yang formed seals with both hands, and hazy lights shot into the formation. Suddenly, the cauldron was rumbling and trembling, and the iron chains shaking, making a shocking sound.

The light flowing in the Three Yin Divine Killing Array gradually dimmed. At the intersection of the array patterns, a mysterious crystal slowly floated up and fell into Xu Yang's hand.

"The first one." Xu Yang said with a smile.

Xu Yang did the same thing, and amid the shaking and trembling sound of the iron chains, Xuan Jing was forced out one after another and fell into Xu Yang's hands.

With the loss of Xuan Jing, the light of the entire Three Yin Divine Killing Array quickly dimmed, and the trembling of the iron chain became weaker and weaker.

"Not good! Xu Yang, flash!"

A loud shout sounded from behind, and a warning flashed through Xu Yang's heart. Without thinking, Dapeng used his trajectory of his body movement and moved eight feet in an instant.

Boom!
Chapter completed!