After exploring the secret realm for so long, the spirit of the two has always been on alert, although because of the absorption of the Yin Emperor relics, the physical condition is much better, but the spirit is still a little tired.

Therefore, the two of them did not rush to find an exit from the secret realm, but stayed where they were and rested for a while.

Taking advantage of this time, Xiao Ning also learned about Gu Ling's current physical condition, and found that she did not leave hidden dangers because she spit out a few mouthfuls of blood in her heart before, so she also breathed a sigh of relief.

"By the way, Senior Sister, I got a nice thing behind that blood-colored giant door before, and I specially left it for you. ”

As he spoke, Xiao Ning took out a piece of jade slip from his pocket sword and handed it to Gu Ling, who was deceived from the spirit of the Hell Book Tower Guarding the Tower, the strongest technique that the Yin Emperor had ever cultivated, the Yi Marrow Sutra.

Xiao Ning also took a cursory look at this exercise before, the so-called Yi Marrow Sutra is not very prominent for the promotion of the true element, but it is an exercise that constantly washes the scriptures and cuts the marrow.

In this cultivation realm, there are not many exercises for washing the scriptures and cutting the marrow, and there are not many pills, although they are all very valuable things, and it is difficult for ordinary people to obtain them at all, but for the big forces of all parties, it is not particularly difficult.

And Gu Ling, as a disciple of Pei Haoqing's special care, it is naturally not too difficult to want such a thing, and from this point alone, the Yi Marrow Sutra does not have any advantages.

However, it can be called the strongest technique that the Yin Emperor has ever cultivated, and it naturally can't be so simple.

Generally speaking, no matter how much human physique improves, there is always a limit, and once the menstrual marrow is washed to a certain extent, it is impossible to continue.

In addition, the human physique has a strong adaptability in terms of immunity, and the body will easily remember that feeling when the number of times the menstrual marrow is washed, and the immunity will be greatly improved.

However, the Yi Marrow Sutra is different, it not only maximizes the development of the extreme potential of the human body, but even continuously improves the human physique by absorbing the Yuan Force of Heaven and Earth, so that its physique continues to improve.

To put it simply, it means that those who practice the Yi Marrow Sutra are able to continuously improve their potential.

A swordsman who could only cultivate to the bronze level with the maximum limit, after cultivating the Yi Marrow Sutra, his potential would slowly increase, and if there were no accidents along the way, it was even possible to rise all the way to the sword master level. If there is no limit to this world, it is likely that it will continue to improve.

Of course, the time required for people with different qualifications to practice this exercise is naturally different.

Similar to a swordsman whose limit can only reach the bronze level, even if he is really given a copy of the Yi Marrow Sutra to cultivate, his potential can be raised to the level of a sword master, but he may not be able to cultivate to that realm.

After all, the cultivation speed of a person with this kind of inferior qualification is extremely slow, and maybe the realm has not been improved yet, and the life limit has already arrived.

And an amazing qualification like Gu Ling, in fact, even if she didn't have the Yi Marrow Sutra, given time, she would have the ability to rise to the sword master level.

And after adding this Yi Marrow Sutra, before she reaches the limit of her potential, perhaps in this regard, the Yi Marrow Sutra will not bring her much convenience.

However, just the unbounded washing of the scriptures and the marrow is enough for the ancient spirits.

Gu Ling used to have deep demons in his heart and killed too much, although he didn't know why he was able to cleanse Yanhua later, but his nature was just suppressed, and he wasn't really so pure and innocent.

To put it mildly, whether it was because of the temptation of those silver-haired men in the heart demon space, the fact that the ancient spirit was deeply guilty could not escape.

The cultivation of the Blood Demon Sword Dao needs to be comprehended by constantly killing, and it can reach a level that even a sword master-level figure like a fat man is afraid of, which shows how many creatures Gu Ling has killed in order to cultivate this sword path.

In Xiao Ning's opinion, perhaps Gu Ling had comprehended the Blood Demon Sword Dao to the limit, and finally reached the point of not being able to achieve the slightest evil qi after it was released.

And this Yi Marrow Sutra is just able to cleanse such a sin, although it can't erase what Gu Ling has done, but the murderous and evil aura that has been accumulated in her body for a long time will be slowly cleaned.

One day, the ancient spirits will really reach that level of whiteness and flawlessness, and it will no longer be just a superficial appearance.

Xiao Ning originally just wanted to try to get greater benefits for Gu Ling, but she didn't expect that the exercise she was going to come would be so suitable for her, which was also an unexpected joy.

When Xiao Ning handed the jade slip over, Gu Ling was obviously stunned for a moment, and subconsciously took it to take a look, and also found the value in it.

Xiao Ning could clearly feel Gu Ling's delicate body shake, and then a trace of mist suddenly rose in those beautiful eyes.

Her emotions have never fluctuated much, and having such a reaction at this time shows how moved her heart has become.

If it weren't for his temperament, if he were someone else, I'm afraid he would have thrown himself into his arms and offered his own fragrant kiss.

Xiao Ning's approach is indeed worth moving, but in Xiao Ning's own opinion, this is actually just a small thing.

After all, he and Gu Ling supported him all the way to get here, to be able to enter the eighteenth floor of the Hell Book Tower, and get the Yin Emperor's relics from the spirit of the tower, which also has the credit of Gu Ling, which is all she deserves, but luck, this thing is exactly what Gu Ling needs most at the moment.

Gently wiping away the tears that were about to slip from the corners of Gu Ling's eyes, Xiao Ning didn't say anything, but asked instead, "Senior sister, can you tell me about you?"

Before entering the heart demon space, Xiao Ning had always thought that Gu Ling was really a woman who was so pure that there was no pollution in the slightest, it was a fairy that no one could bear to blaspheme, but after entering the heart demon space, he found out that Gu Ling also had an unknown past, and it was still such a painful experience.

He was very curious about Gu Ling's past, what Gu Ling had gone through to make her temperament so weird, and her heart was obviously deeply rooted in demons, but it looked so pure and unblemished on the surface.

And for Gu Ling himself, it was a past that he definitely didn't want to recall, otherwise he wouldn't have formed such a heavy demon.

But in the face of Xiao Ning's request, she couldn't refuse, hesitated a little, and finally said her own thing.

When Gu Ling began to remember, she had already become a disciple of the Netherworld Sect, and what she learned at that time was that she was an orphan who had been adopted by her master Situ Zhong since she was a child, and she was also the guest elder of the Netherworld Sect.

The Netherworld Sect is an evil cultivation sect that is hidden in the mountains, but they cultivate more by absorbing the blood of demon beasts, and do not kill innocents indiscriminately like other evil cultivators.

Gu Ling has been teaching her to practice the Blood Demon Sword Dao since she can remember, her talent is very strong, and her progress is several times faster than the most talented disciple in the Netherworld Sect, achieving the name of the first genius in the history of the Netherworld Sect, and becoming the most highly anticipated disciple of the entire Netherworld Sect.

It's a pity that Gu Ling is only a disciple of Elder Keqing, and he is not in the ranks of the official disciples of the Netherworld Sect, so the Netherworld Sect has lobbied Situ Zhong several times, but he has been refused.

Since the Netherworld Sect is an evil cultivation sect, even if it does not kill innocents indiscriminately on weekdays, it will definitely not act like a famous and decent family.

Seeing that an absolute genius was about to miss out on his own sect, how could they be willing? After lobbying Situ Zhong to no avail, they moved into evil thoughts, and several masters in the sect joined forces to force Situ Zhong to death.

After that, on the grounds that Situ Zhong was dead, they wanted to forcibly force Gu Ling to enter the sect, even if she was jealous, they would not hesitate to do so for the development of the sect.

And Gu Ling was already a teenage girl at that time, and after nearly ten years of cultivation, with her heavenly resources, her cultivation was already unfathomable, and the people of the Netherworld Sect couldn't suppress her at all.

The people of the Netherworld Sect killed the master Situ Zhong, who she regarded as her father, how could Gu Ling join the Netherworld Sect, and he went out on the spot.

Originally, Gu Ling's cultivation was extremely profound, coupled with no scruples, under the attack, the entire sect was almost wiped out by her overnight.

Cultivating the evil way, she will not suppress her emotions too much, and her style of acting is all her own way, not affected by the morality of the world, and the ancient spirit directly destroyed a sect of the Netherworld Sect in a fit of anger, but she could not extinguish the anger in her heart.

At that time, her Blood Demon Sword Dao achievements were already extraordinary, and after experiencing that battle to destroy the door, the Blood Demon Sword Dao was even pushed to the level of nearly Dacheng.

Once there is a beginning, the crazy killing heart in my heart can no longer be suppressed.

Maybe at first she was just trying to avenge Situ Zhong, but after killing the red eyes, she realized the benefits of killing, and Gu Ling almost fell into the devil's path.

As a result, a female demon appeared in the cultivation realm-the Blood Refining Witch!

Everywhere the Red Refining Witch passed, there would always be a burst of bloody rain, and a large number of civilians died tragically in her hands, which became the nourishment for her to improve her strength.

Gu Ling is also a smart person, she knows that although she has the ability to destroy a Netherworld Sect, the accumulation of the Netherworld Sect is not deep, and there are not many real masters, with her strength at that time, if she encounters an absolute powerhouse in the cultivation realm, she will definitely not be able to escape.

So her target has always been just civilians, or low-level swordsmen who are lonely in the wild.

How exactly that time was spent, Gu Ling didn't go into too much detail, but just a few words, it was enough to make it clear what kind of bloody experience it was.

Later, Gu Ling inadvertently got a piece of news, and learned from the mouth of the disciple who was lucky enough to survive in the Netherworld that in fact, Situ Zhong was not dead at all, and the Netherworld Sect really wanted to kill him at that time, but he escaped.

Following the clues, Gu Ling finally found Situ Zhong, but was told that all this was actually a scene directed and acted by Situ Zhong himself, the purpose of which was to stimulate the demonic nature in Gu Ling's body and achieve her evil sword body.

After learning the truth, Gu Ling didn't have much idea at that time, her life was given by Situ Zhong, and Situ Zhong was to give her more powerful power, plus she didn't take human life very seriously at that time, so she didn't care about being deceived by Situ Zhong.

However, when she proposed that she wanted to continue to follow Situ Zhong, Situ Zhong told her that she would not be qualified to follow him until at least her Blood Demon Sword Dao had reached the point of returning to the truth.

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