Zhang Ruochen held the inscription pen in his hand, continuously injecting his true qi into the pen, and his spiritual power was completely immersed in the world of the six-rank formation inscription.

"Boom!"

Outside, the sound of attacks was constantly heard, and the entire underground palace shook non-stop.

Han Yun stood aside nervously, not daring to make a sound, for fear of disturbing Zhang Ruochen.

About an hour passed, Zhang Ruochen finally took back the inscription, and it was not until this moment that he found that his whole body was soaked with sweat.

Zhang Ruochen let out a long breath, took out spirit crystals from the space ring, and kept hitting them into the pits of the stone wall.

Eight hundred and sixty-four spirit crystals were shot out in a row, completely filling the pits on the stone wall.

"It's a matter of success or failure. Zhang Ruochen pressed his palm on the stone wall and injected his true qi into the formation inscription.

True Qi flowed with the formation inscriptions, fully activating the eight hundred and sixty-four spirit crystals. Those spirit crystals flickered continuously, almost like hundreds of bright stars embedded in the stone wall.

"Wow-"

The stone walls of the underground palace are lit up with lines, dense like spider webs, forming a large defensive array.

"Success! Success!" Zhang Ruochen laughed.

Han Yun was also excited, and there was a little more admiration in his eyes when he looked at Zhang Ruochen, "Zhang Ruochen, you are too powerful! What the formation masters of the Yuntai Sect Mansion can't do, you have done it!"

"It's just that seven or eight percent of this six-rank formation has been repaired, which is not a skill. However, it should be enough to use this remnant array to block Huo Jingcheng! We can now recuperate from our injuries with peace of mind, and wait until our injuries heal, and then slowly discuss ways to deal with Huo Jingcheng. Zhang Ruochen said with a smile.

Han Yun's gaze glanced at the ring on Zhang Ruochen's finger.

"From one ring, hundreds of spirit crystals can actually be taken out, it must be a spatial treasure. Han Yun thought so in his heart.

After hesitating for a moment, Han Yun finally didn't ask, after all, it was Zhang Ruochen's secret. If she asked, she might be misunderstood by Zhang Ruochen, thinking that she was greedy for that space treasure.

Under the protection of the remnants of the six grades, Huo Jingcheng really failed to break in.

It took two days for Zhang Ruochen to finally recover from his injuries.

The wounds all over the body are completely healed, and only a few faint scars remain.

The true qi in the sea of qi has returned to its peak state, and it seems to have improved a lot compared to before.

After the recent series of battles, Zhang Ruochen found that the sacrificial power in his body had completely fused with his true qi, and his cultivation had reached the peak of the small pole of the Earth Extreme Realm.

"In the midst of battle, the power of sacrifice can be fused so quickly. The next time you absorb the power of the sacrifice, you will definitely use the method of battle to fuse the power. ”

Zhang Ruochen glanced at Han Yun and found that she was still recuperating from her injuries.

Her injuries were already worse than Zhang Ruochen's, and her recovery was naturally slower.

Another day passed, and Han Huan also recovered from his injuries, and his mental energy completely recovered. She opened her eyes, and two sharp rays of light shot out from her jet-black pupils, exuding a powerful martial arts momentum.

As she withdrew her true qi into her body, the light in her eyes also dissipated, returning to calm.

Han Huan's eyes looked at Zhang Ruochen and found that Zhang Ruochen was carving something on the ground?

So, she walked over, stood behind Zhang Ruochen, and looked down.

I saw that on the ground, there was a mysterious pattern of yin and yang gossip engraved, surrounded by small text marks.

In the pattern, there are two small figures holding war swords, comparing sword moves.

"It's ......"

Han Yu took a deep breath, mobilized his sword intent realm, condensed his spiritual power, and stared at the yin and yang gossip pattern on the ground again, and found that the two villains holding war swords seemed to have come to life, suspended on the ground, constantly swinging their swords, making moves, and stepping on them, showing a subtle swordsmanship.

The yin and yang gossip pattern seems to come alive and is constantly running.

"Sword Intent Martial Arts!"

Han Yu said in shock: "Your attainments in the way of the sword have reached such a realm, it is estimated that you are not far from the sword heart, right?"

The sword heart is clear, that is the realm of legends.

Since she was a child, Han Huan's attainments in kendo far surpassed those of her peers, and even her father said that she had the talent of a sage, and she was the most outstanding swordsmanship genius in the Yuntai Sect for a hundred years.

Even at the beginning, when Han Yun and Zhang Ruochen competed in a sword match, she lost to Zhang Ruochen, she felt that she was only slightly inferior to Zhang Ruochen. As long as she works hard, she will definitely be able to surpass Zhang Ruochen.

It wasn't until this moment that she realized that her realm in the way of the sword was so far behind Zhang Ruochen.

Zhang Ruochen didn't pay attention to Han Yun's surprise, pointed to the pattern on the ground with his finger, and said: "This is a Yin and Yang Sword Array, only two martial artists with extremely high attainments in the sword path can fully display the power of the sword array." Our sword realm is the pinnacle of the sword walking with one's heart, and if we cast a sword array, it is enough to kill Huo Jingcheng. ”

"You want to learn this sword formation now?"

Han Yu frowned and said: "This sword array is very profound, it is estimated that it will not take a year and a half, and it is impossible to reach the realm of integration. ”

With just one glance, Han Yu had already discovered the mystery of the Yin and Yang Liangyi Sword Formation.

Zhang Ruochen said: "You don't need to reach the realm of integration, as long as you can exert one-tenth of your power, it will not be difficult to defeat Huo Jingcheng." I'll give you three days, and with your swordsmanship, it should be enough!"

Han Yun stared at Zhang Ruochen with some confusion and said, "The Yuntai Sect Mansion also has some joint fencing formations, but at least three people are needed to form a sword formation. Moreover, it also needs the assistance of the array base jade to exert its full power. ”

"If you don't have the assistance of the formation base jade, you want to defeat Huo Jingcheng with just a sword formation that can only exert one-tenth of its power?"

Zhang Ruochen said: "The function of the formation base jade is to use the formation inscription to connect the true qi of the array warriors. However, the Yin and Yang Liangyi Sword Formation does not need to borrow the formation inscription, it borrows the sword intent between the two warriors, so that the sword intent connects the power of the two warriors together. ”

"I see. Han said.

Other martial artists don't understand the subtle artistic conception of "sword intent communication", but Han Huan, who has a profound kendo cultivation, can understand it. Therefore, Zhang Ruochen only mentioned it slightly, and she suddenly realized.

Zhang Ruochen continued to explain some of the mysteries of the Yin and Yang Liangyi Sword Formation to Han Huan, hoping to help Han Huan master this sword formation faster.

"The Yin and Yang Liangyi Sword Array is based on people, with the Heaven and Earth Liangyi as the compass, and the Yin and Yang Mystery as the driving force. Manpower is poor, and heaven and earth are endless. As long as it can attract the aura of heaven and earth, it is not surprising to create any miracles. ”

"When arranging the sword array, you and I belonged to the yin and yang eyes in the array, respectively. The yang eye moves, while the yin eye moves. The yang eye stops, while the yin eye stops. ”

"With the sword moves, there are only eighteen moves in total, which are called 'Yin Yi Nine Swords' and 'Yang Yi Nine Swords', as for other sword moves, it all depends on the situation at the time, and they are improvisable in the sword formation. I believe that with your attainments in swordsmanship, within three days, you should be able to cultivate the Yin Yi Nine Swords to the entry level. ”

Han Yun's hands were clasped in front of his chest, his eyebrows were slightly raised, and he said, "You look down on me too much! With my attainments in swordsmanship, I can cultivate the Yin Yi Nine Swords to the beginning in one day." Three days is enough time to cultivate the Yin Yi Nine Swords to Xiaocheng. ”

Zhang Ruochen stared at her and continued: "If the Yin and Yang Two Yi Sword Formation was so easy to cultivate, it would not be called the strongest two-person sword formation. I think back then, Chi Yao and I ......"

Speaking of this, Zhang Ruochen suddenly stopped, smiled slightly bitterly, and said: "The nine swordsmanship of the Yin Yi Nine Swords, I have already engraved it here, you should cultivate first! How much you can comprehend depends on your understanding." If there's anything you don't understand, just ask me as much as you can. ”

After saying this, Zhang Ruochen walked to the other end of the underground palace and began to cultivate the "Yangyi Nine Swords".

Han Yun stared at Zhang Ruochen deeply and said, "What a weirdo!"

Han Huan's comprehension was indeed very strong, exceeding Zhang Ruochen's expectations, and it only took two days and three nights to cultivate the Yin Yi Nine Swords to the beginning.

Of course, during this period, Zhang Ruochen also corrected her mistakes in swordsmanship many times, carefully guided her, and taught her some tips of the Yin Yi Nine Swords without reservation.

After cultivating the Yin Yi Nine Swords to the beginning, Han Yu truly understood the breadth and profundity of the Yin and Yang Two Yi Sword Formation.

Even if there is no Yin and Yang Liangyi Sword Formation, just this set of "Yin Yi Nine Swords" is even more sophisticated than those spiritual-level swordsmanship, and it is extremely powerful.

In the Yuntai Sect, there is only one kind of spiritual-level swordsmanship, and there are still some missing, which are not complete. That set of swordsmanship was regarded as the strongest swordsmanship of the Yuntai Sect, but compared to the Yinyi Nine Swords, it was 108,000 miles away.

Previously, Zhang Ruochen said that the Yin and Yang Liangyi Sword Formation was the strongest two-person sword formation, and Han Yu was still a little scolded, but now she completely agreed with Zhang Ruochen's point of view.

Those powerful sword formations in the Yuntai Sect Mansion, compared to the Yin and Yang Liangyi Sword Formations, were simply unpopular sword formations.

Han Yun said: "It took nearly three days just to cultivate the Yin Yi Nine Swords to the beginning. If you want to cultivate to Xiaocheng, it is estimated that it will take at least a month, or even longer. If you let other martial artists cultivate, it is estimated that it will take a year, and you will not be able to cultivate to the beginning. ”

Zhang Ruochen said: "You are just cultivating the Yin Yi Nine Swords to the beginning, whether we can tacitly cooperate and display the Yin and Yang Two Yi Sword Array is still unknown." ”

"Is it that difficult?" Han Yun asked.

"You'll know if you try it!"

Zhang Ruochen took out the Shen Yuan Ancient Sword, stood in the circle that had already been drawn, and pointed at the horizontal sword, and the temperament of the whole person immediately underwent earth-shaking changes.

The spine of his back became straight, and his eyes were sharp, like a young sword god.

Han Yun stood in another circle ten zhang away from Zhang Ruochen, holding a white jade ancient sword in his hand, pointing at Zhang Ruochen, and the temperament on his body was completely different from just now, with a beautiful face, like a beautiful sword immortal.

Before the two of them could draw their swords, a sword aura had already appeared around them.

"Move!"

Zhang Ruochen read out a word, stepped on the footwork, and rushed out seven steps to the right, each step was just one zhang away.

When Zhang Ruochen's feet began to move, Han Yun also immediately moved.

"Whew!"

Both of them are masters of swordsmanship, moving quickly in the sword formation, performing a move to move the sword.

In the entire sword array, there seemed to be eighteen figures, each of whom was practicing different sword moves.