For three days in a row, every day Chu Duan entered the Valley of the Earth's Core Desolate Fire for an hour, consuming a flawless quality Ice Spirit Pill, and did not find any of the Earth's Center Desolate Fire Qi, but he found an Earthfire Desolate Lotus.

The Earth Fire Desolate Lotus is one of the main medicinal materials for refining a certain human-level elixir, it is relatively small and quite expensive, and if you bring it back to the outer palace, you should be able to exchange a lot of contribution points, which is a good harvest.

As for the Desolate Flame in the Heart of the Earth, most of the dozens of Divine Condensation Realm swordsmen were killed and injured before, and they couldn't help the Desolate Flame in the Heart of the Earth, and the next day, a disciple of the True Palace came to the Desolate Fire Valley in the Heart of the Earth and attacked the Desolate Flame in the Heart of the Earth.

The disciple of the True Palace is a sword king-level kendo powerhouse, his strength is terrifying, and the color of the heavens and the earth changes as soon as he makes a move, while the desolate flame in the center of the earth has a geographical advantage, hiding under the magma pool, which can be attacked and defended.

In the end, the disciple of the True Palace severely injured the Desolate Flame of the Earth's Heart and was unharmed, and after the Desolate Flame of the Desolate Flame of the Earth was severely injured and disappeared into the magma pool, the disciple of the True Palace waited for a day, and gave up without any movement.

The injured Geocentric Desolate Flame didn't seem to be able to swallow out the Geocentric Desolate Fire Qi anymore, resulting in a significant decrease in the number of people entering the Geocentric Desolate Fire Valley in the recent past, making the Geocentric Desolate Fire Valley empty for a while.

In the past few days, Chu Duan did not return to the Heavenly Desolate Divine Mountain, but temporarily settled down in a city volcanic city quite close to the Valley of the Desolate Fire in the center of the earth.

Except for entering the Valley of the Desolate Fire in the center of the earth for one hour every day, he basically stays in the Volcano City for the rest of the time, and after cultivating, he will also take a walk around the streets of the Volcano City to have a look.

"Ancestral exercises, ice divine skills, the best exercises to enter the Valley of Desolate Fire in the center of the earth. ”

As he passed by, Chu Duan saw a signboard on a stall with such words.

Indeed, the ice-based exercises, as soon as they are running, can lower the temperature, and if they are combined with the ice-based elixir, they can enter a place like the Desolate Fire Valley in the center of the earth. The effect is significant.

But the problem is that each swordsman can only practice one type of exercise, otherwise it may create a conflict between the success and the law, resulting in the destruction of the meridians, and the consequences are very serious and tragic.

Chu Duan had already cultivated the Heavenly Desolate Sword Codex, and it was impossible to transfer to other exercises.

"Come and take a look, this is my ancestral ice magic skill, and I can practice with other exercises. The stall owner was a middle-aged man, and when he saw someone walking by, he exclaimed.

Chu Duan just walked by. Immediately stopped, took two steps back, and stood in front of the stall.

"Why can you practice this exercise with other exercises?" Chu Duan asked.

"My ancestral Ice Divine Skill is an auxiliary exercise, which can be attached to other cultivation techniques, so it can be practiced together. The middle-aged man enthusiastically introduced.

"Can you take a look? Chu Duan said.

"Of course you can, but only in the first few paragraphs. The middle-aged man was very proficient in this, took out a piece of paper and handed it to Chu Duan, on which was a small record of the first paragraph of the ice system exercises.

Chu Duan took it and looked at it carefully. Keep it in your head and simulate it.

It's only a short paragraph, but it can already be seen that this exercise is really good. After simulating it in his mind, Chu Duan found that the difficulty of cultivating this exercise seemed to be a bit high.

"How do you sell it?" Chu Duan asked casually as he returned the paper to the stall owner.

"You really have a vision. My ice magic skill is definitely worth the price, and it's not expensive. The stall owner bared a mouthful of yellow teeth and stretched out his palm. said to Chu Duan: "As long as there are 10,000 high-grade barren stones, the exercises are yours." ”

Hearing this, Chu Duan chuckled, shook his head, and was about to turn around and leave.

"Eh...... Wait, if you think it's expensive, you can discuss, otherwise how much do you think is appropriate?" The stall owner hurriedly called out to Chu Duan, he had been setting up a stall for several days, and he had no business.

"Have you ever practiced this exercise yourself?" Chu Duan didn't say the price, but asked, and immediately, without waiting for the other party to answer, he said again: "You should have practiced, and you found that this exercise can't be practiced at all, right?" ”

A trace of panic flashed in the eyes of the middle-aged man, indeed, this exercise is not an ancestral exercise, but he obtained it accidentally, after obtaining it, he tried to cultivate, and found that he could not practice it at all, the reason is very simple, theoretically this exercise can be attached to other cultivation exercises to coexist, but it is too difficult to really implement.

It was precisely because of this that he took out this exercise and sold it to see if he could fool around and make a lot of money, but unexpectedly, the person who asked before was taken aback by the high price and left without looking back, but Chu Duan broke the mystery without saying a word.

"An exercise that can't be practiced, but you have to sell 10,000 high-grade barren stones......" Chu Duan's eyes became fierce.

"No, it's not that it can't be practiced, it's just that the difficulty is relatively high, which also shows the profundity of this exercise. The stall owner argued.

"A hundred high-grade barren stones, I'll buy them. Chu Duan said directly.

"A hundred yuan is too little...... stall owner said, Chu Duan shook his head, intending to turn around again.

"Wait, a thousand high-grade barren stones. The stall owner hurriedly said.

"Your exercise, I'm afraid it's not ancestral, even if you continue to set up a stall, no one will buy it, if someone buys it and finds that they can't cultivate, it is tantamount to being deceived, most of them are also looking for trouble for you, if it's a disciple of the Heavenly Desolate Earth Palace, do you think it's a big trouble?" Chu Duan said quickly.

The stall owner thought about it, his face changed back and forth, and he found that what Chu Duan said made some sense.

"That's it, I'll suffer a little loss, two hundred high-grade barren stones, it's up to you whether to sell them or not, I just saw that this exercise is more special, and I want to study it." Chu Duan said.

"Three hundred high-grade barren stones. The stall owner said resolutely.

Three hundred high-grade barren stones are equal to 30,000 medium-grade barren stones, and Chu Duan still has them.

So, he used 30,000 medium-grade barren stones to buy this ice technique that seemed impossible to practice.

Return to the inn and take out the exercises and read them carefully.

This ice exercise, called the Ice Spirit Frost Technique, is an auxiliary exercise that does not indicate the grade.

Cultivating to this day, Chu Duan also knows the Dao, and the swordsman practices the exercises, which are divided into major exercises and auxiliary exercises, but the auxiliary exercises are often extremely rare, few people know, and the cultivation is very difficult.

Auxiliary exercises often have no grade, and their power is not very powerful, but if they are integrated with the main exercises, they often have miraculous effects.

After reading the whole article, Chu Duan also confirmed his guess, the reason why this auxiliary exercise could not be practiced was because of control.

In order to attach the auxiliary exercises to the major exercises, there must be a strong control, which comes from a strong spiritual mind.

The spiritual intent of the vast majority of swordsmen is not strong enough, and they cannot be achieved at all, so they naturally cannot be practiced.

There is no hierarchical division of the Ice Spirit Frost Skill, only the small success and the big achievement, after practice, it has all the effects of the Ice Spirit Frost Skill, so it is very difficult to cultivate.

After some enlightenment, he thoroughly understood the mysteries of the exercises one by one, and Chu Duan began to cultivate.

He has a superhuman spiritual mind, very pure, and amazingly active, all kinds of conditions, making the impossible possible.

To cultivate the Ice Spirit Frost Skill, you must first absorb a wisp of Ice Strength into the meridians, so that the Ice Power Strength will gradually become a part of the Sword Qi along with the sword qi, fuse into one, and be able to split it freely, which is equivalent to practicing the Ice Spirit Frost Skill.

Because of its proximity to the Valley of Desolate Fire in the center of the earth, the temperature of the volcanic city was also greatly affected, and it was generally hot, so it was impossible to feel the slightest cold breath at all.

With a move, Chu Duan took out an ordinary-quality Ice Spirit Pill and took it, and suddenly, the cold qi swept away in his body, and then, Chu Duan used the Heavenly Desolate Sword Qi, followed the method of the Ice Spirit Frost Gong, absorbed the cold qi, condensed, and attached.

It is a difficult process that requires a lot of patience and perseverance.

There is no fixed running route for the Ice Spirit Frost Gong, and what is the route of the exercises it attaches to, what is the Ice Spirit Frost Gong is like.

An hour passed, and Chu Duan carried out many condensations of the power of icy cold, failing again and again, until the medicinal effect of the ordinary Ice Spirit Pill had passed.

Although he failed again and again, Chu Duan also found some points from it.

After a short rest, he took the Ice Spirit Pill again and began to cultivate again.

As soon as his spiritual mind was exhausted, Chu Duan recovered, and after he recovered, he continued to take the Ice Spirit Pill to cultivate.

A day passed, but it still didn't work, and Chu Duan didn't know how many times he had tried, maybe thousands of times.

After resting, take the Ice Spirit Pill again and continue to condense the power of ice and cold.

Another day passed, and every time he was about to condense, but failed, Chu Duan was not discouraged, and on the third day, he continued to condense.

If it was someone else, he had failed tens of thousands of times in a row, he was exhausted, and he would have given up a long time ago, but Chu Duan still persevered, he had found the point, the real point.

On the third day of cultivation of the Ice Spirit Frost Skill, an hour, he still failed, but Chu Duan showed a smile.

This time, he rested for three hours, exhausted his fatigue, took out an ordinary-quality ice spirit pill, swallowed it, and the familiar cold aura swept through his body again, Chu Duan's spiritual mind moved, he was engrossed, captured a wisp of cold breath, and began to control the condensation.

Tens of thousands of failures, in exchange for incomparable familiarity, in an easy way, Chu Duan captured wisps of cold breath, fused them together, and condensed.

This time, Chu Duan was ten percent sure that his condensation was successful.

Within his efforts, a white aura in his body was constantly compressed and condensed, and finally it became a line, thinner than a hair.

Looking inwardly at this icy power, Chu Duan's face showed sincere joy.

Finally, the power of the ice spirit of the first Ice Spirit Frost Skill was condensed, of course, it did not mean that Chu Duan had already practiced the Ice Spirit Frost Skill, it was just a beginning, a good beginning.

If you have the first Ice Spirit Power, you will have the second and third Paths, until you practice the Ice Spirit Frost Skill.

With a bang, Chu Duan continued to condense the power of the Ice Spirit until the medicinal effect of the Ice Spirit Pill had passed, took out one pill again, and then continued to condense.

If it weren't for the assistance of the Ice Spirit Pill, I don't know when the Dao would be able to condense the power of the first Ice Spirit.

For the next period of time, Chu Duan wholeheartedly cultivated the Ice Spirit Frost Skill. (To be continued......)