After recognizing the eternal sword energy, corresponding records from ancient books emerged from Han Li's soul.

It is said that although the eternal sword energy is the easiest to refine among the three most powerful sword energy, even those sword sects with extremely long history dare not refine it at will.

Just because refining this sword energy will inevitably bring great cause and effect to the sect. At the very least, the sword pool will collapse, and at the worst, the whole sect will be destroyed!

Therefore, those powerful sword sects would rather pursue the other two powerful sword energy than try to refine the eternal sword energy.

And those swordsman sects that do not believe in evil naturally disappeared into the long river of time.

"Senior Brother Luo, how can you get this sword energy?!"

Han Li asked without any concealing his desire.

"Junior Brother Han has been practicing in Zhulongdao for many years. I think he must have heard of the legend about Wusheng Sword Sect?"

Luo Hong asked back.

"According to legend, Wusheng Sword Sect recruits disciples very strictly. It never opens the mountain gate and recruits a large number of disciples. Instead, the disciples on the mountain go down the mountain to travel, search for the best sword cultivators in the world, and take them back to the mountain to cultivate them since childhood. Everything depends on opportunities and never force them.

If a disciple of this sect wants to walk down the mountain as a master, he must cultivate to the level of Golden Immortal, otherwise he will have to die of old age in the mountain gate for the rest of his life.

At its peak, there was a beautiful story about "a family of seven golden immortals, traveling down the mountain together" that spread throughout the world.

Senior Brother Luo, you mentioned this ancient sword sect at this time, but this eternal sword energy was found from the remains of Wusheng Sword Sect?"

Han Li recalled a little and asked excitedly.

"Yes, in fact, that ruin is in this Minghan Immortal Palace."

As he said that, Luo Hong roughly explained what he and Lu Yuqing had experienced in Wusheng Sword Sea.

Of course, he did not mention the section about Xiongshan.

"It turns out that the Immortal King Minghan is the Taoist Wusheng, and Fairy Lu is her reincarnation body! What a pity."

After learning the whole story, Han Li couldn't help but sighed with disappointment.

However, he did not blame Luo Hong for not helping him retain this opportunity. After all, he understood that it was the backup hand left by Taoist Wusheng, so naturally it could not be easily snatched.

"Young Brother Han doesn't have to sigh. This eternal sword energy is indeed related to Wusheng's sword sea, but it's not something that I got directly from it for my brother."

Luo Hong immediately chuckled.

When others heard this, they must have been confused, but Han Li was just a little stunned and then understood.

"Senior Brother Luo, did you use the magical power of creation to refine this sword energy? Can that be?"

"Junior Brother Han has helped me cultivate spiritual medicines for you many times before, so I am naturally willing to take action to refine some eternal sword energy for you.

But this will consume a lot of law and spiritual materials. Junior brother, your natal flying sword has 72 more, and I'm afraid you can't afford this expense."

Although Luo Hong is willing to help, it is hard for a good cook to cook without rice.

"The whole set is naturally not good, but I can still withstand the eternal sword energy that is sufficient for the six Green Bamboo Bee Cloud Swords first, and I can still grit my teeth and bear it!"

Han Li said without hesitation when he heard this, looking at Luo Hong with hope.

"As long as there is materials, there will be no problem for you."

Luo Hong immediately promised.

"Okay! Thank you, senior brother!"

Han Li was immediately overjoyed and excitedly bowed to Luo Hong to thank him.

After he finished speaking, he realized that he had gone out of the question. It was Luo Hong who asked him for help, but now he is backwards?

After a embarrassed smile, Han Li said:

"Sorry, Brother, what did you want me to do for you before?"

"It's very simple. I want to take advantage of the last ten thousand years to understand the magical power of creation for me, and the focus is on sword energy, so I need your cooperation and provide various sword energy."

The sword energy is an energy flow purely composed of various spiritual souls. It has a relatively simple structure and consumes less of the Taichu energy every time it creates, which is very suitable for research.

However, Luo Hong had not spent too much effort on kendo before, so Old Demon Han needed to provide enough samples.

"It turns out that it's just such a small thing. In the next ten thousand years, I will practice in this black tower, so that my senior brother can be at any time!"

Compared to obtaining the eternal sword energy, this little busy seems to be worth mentioning in Han Li's opinion, so he immediately agreed.

"Very good, then I'll have a junior brother!

It’s better to choose a date than to meet the day, let’s start now!”

Luo Hong was also full of expectations for this research. He was unwilling to delay any time at this moment, so he started the work he had planned.

In the first step, Luo Hong spent a hundred years to analyze the spiritual model of hundreds of sword energy that Han Li could use with his divine eyes.

In the second step, Luo Hong used the exhaustive method without any tricks. Using the magical powers of Taichu creation, he refined one sword energy after another based on the model of understanding the Lingzi.

At this time, Han Li's role became a sword tester, and his feedback was important research data.

Obviously, this step will be quite time-consuming and is destined to lead to many failures.

But in Luo Hong's opinion, even the research data brought by failure is a very precious asset, so he did not show any impatience throughout the whole process.

In contrast, Han Li did not have such a good mood. He was very unaware of why Senior Brother Luo wasted the law and spiritual materials and made meaningless attempts.

However, although he was irritated, it was not difficult for him to continue to endure under the temptation of the eternal sword energy.

Just like that, time passed day by day.

One day in more than nine thousand years, Han Li was called to the seventh floor of the Black Tower by Luo Hong again.

After pushing open the stone door, he looked at Luo Hong with some numbness and said:

"Senior Brother Luo, are you still the same?"

"Yes, Junior Brother Han will be there quickly and stand there. Let's try the newly created sword energy for Brother."

Luo Hong's excitement did not diminish at all at first, and Han Li didn't look at him right now. A jade slip was placed on his forehead, and he didn't know what was recorded in it.

Han Li had long been accustomed to Luo Hong's appearance. After walking to the center of the test site, he skillfully opened the surrounding bans.

"Senior Brother Luo, the ten thousand years of the year are about to expire. When are you planning to take us out?"

Although Han Li admired Luo Hong's enthusiasm for comprehending magical powers, he was also afraid that the other party would forget time because of this.

"This is the last experiment. I'll take you out after it's completed."

Putting down the jade slip, Luo Hong looked at Han Li with a bright look.

When Han Li faced this kind of gaze, his heart tightened for no reason and felt a sense of inexplicable trouble.

But before he could frown, he saw that Luo Hong had already activated the magical power of Taichu creation, and condensed a mass of Taichu energy in his chest.

In an instant, a bright white filament condensed and formed on its chest.

Suddenly, an indescribable aura appeared in the stone chamber, causing the restrictions on the four walls to emerge one after another, and the runes in them flashed wildly!

As Han Li, who was facing this sword energy, his eyes were wide open at this moment, and his heart was thrilled, and his forehead was filled with cold sweat!

"What's wrong! This sword energy is wrong!"

A thought flashed in his mind, and Han Li wanted to stop this experiment, but he had only had time to spit out the word "Luo" in his mouth, and he saw that Luo Hong, who looked almost crazy, had already activated the white sword thread.

It was almost conditioned reflex, and Han Li didn't expect to sacrifice three Green Zhu Fengyun Swords that had shaped the eternal sword energy. Then, with a divine thought, the three immortal swords merged into one!

"cut!"

With a call, Han Li immediately injected his immortal energy into the green fairy sword in front of him, making his spirit light shine, and quickly cut out a blue sword energy several feet long!

However, before the green sword energy could be shot out, the white sword silk had already slashed closer.

When two sword energy fight each other, it seems like a white star dot is added on the green crescent moon, and the two are very different in power.

But what Han Li couldn't believe was that the blue crescent moon was being forced back at the moment, and she was trembling wildly, as if she would collapse the next moment.

"How is this possible!"

Han Li participated in Luo Hong's research almost throughout the whole process, and naturally knew that Luo Hong only refines one sword energy in order to save legal materials.

And he has now activated all the eternal sword energy in the three Green Bamboo Bee Cloud Swords, which are as many as three thousand ways!

Even if this new sword energy is extraordinary, he can suppress it with his absolute advantage of skill!

But now, let alone suppressing it, the blue crescent moon can obviously be resisted for a short time.

But Han Li has now used all his mind to activate the green sword energy. Once he distracts his mind and reminds Luo Hong, he is afraid that the terrifying sword thread will make him look different in the next moment.

But if you don't remind, this result will also occur after one or two breaths.

Just when Han Li felt that he was unable to get off the tiger, the green sword energy collapsed faster than he expected.

"It's over!"

A thought flashed in his mind, and Han Li felt that the time around him had slowed down countless times. The white sword thread was slowly slashing towards him, but he could not do anything.

However, the next moment, a sudden change occurred!

I saw a dark green light lit up in front of Han Li's chest, and a small dark green bottle flew out from its collar, blocking the white sword silk.

However, just as the two were about to come into contact, the white sword thread stopped by itself.
To be continued...