Dongchen has no choice at this time, since he has entered the thief's den, it is impossible to return empty-handed, Tianling Villa, Dongchen has already explained.

If he didn't go back, no one would come over there, but he couldn't stay here all the time, and it would take five days for Dongchen to maximize the power of Frost's sorrow.

So Dong Chen gave these demon kings five days to think about it, and at the same time he was buying time for himself, others didn't know what he was doing, they just thought that he was suppressing the seal of the Netherworld with his strength, but he really didn't know that Dong Chen was eager to break the seal quickly.

He is trying to devour the dead air, and the sorrow of the frost is like a cow's drink, and he is also trying to devour...

A day passed, and Dongchen had no concept of time in the dark, but he could feel the sorrow of the frost growing stronger...

Two days have passed, and it is still in the dark, Dongchen has not changed places, as if growing in the same place, but if someone comes here, he will definitely feel the fierce killing intent and the coldness of Sen Han.

Three days later, someone finally came, but Dongchen ignored it, it should be the demon king who came to see the situation, although the situation here has been completely suppressed, and there is not even a little leakage, but the killing intent is getting stronger and stronger.

Fortunately, the killing intent was not aimed at anyone, it was just an artistic conception, but the person who came should have discovered the source of the killing intent, the long sword beside Dong Chen.

That seemingly ordinary long sword, the killing intent revealed now is almost impossible for ordinary demon beasts to connect with...

In the same three days, Dong Chen felt that the soul power in the frost sorrow was close to saturation, but Dong Chen did not get up, he still kept his promise and continued to guard here.

In the blink of an eye, on the fourth day, the Frost Sorrow, which was originally full of killing intent, suddenly did not have the same fierceness as before, but became more and more stable, and then it seemed to be a little strange, so that Dongchen had to wake up from his meditation and look at the Frost Sorrow strangely.

Holding it in his hand, Dong Chen felt that something seemed to be wrong, and after accepting the inheritance of water spiritual power, Dong Chen had a feeling that he was compatible with the blood of frost sorrow.

Now that feeling is suddenly gone, as if in an instant, this frost sorrow has turned into a handful of mortal iron, and I don't feel any threat, this is something that Dongchen uses to save his life, how can he not be in a hurry.

But when Dong Chen probed carefully, he found that in the core of Frost Sorrow, the gem at the hilt of the sword, there seemed to be something slowly awakening.

In particular, the feeling that that thing gave Dong Chen was more intimate than the feeling of frost sorrow before, as if that thing existed because of himself.

At the same time, Dong Chen could still feel a longing, a thirst for blood, a desire for killing, coming from the things that were gradually waking up, as the owner of the sword, Dong Chen could not get out at this time.

But that kind of strong call made Dong Chen frown, and he held his hand on the blade of the sword, and then unloaded his own defense and grasped his hand tightly, which made the blood flow out of his hand.

But the blood did not flow down the blade, but flowed upwards along the blade, all of which were attributed to the gems inlaid in the hilt, the source of that desire, the desire for blood, especially the blood of Dong Chen, almost made Dong Chen feel the light tremor of the blade, that was because of joy and excitement.

Dong Chen was not stingy, anyway, with Dong Chen's own recovery ability, bleeding would not be uncomfortable, but he greatly underestimated the need for blood in Frost Grief.

Dong Chen's sword continued to convey blood, so that there was no blood on the blade, and the gem had changed from the original blue to blood red.

The fourth day was spent in such continuous consumption, and it was not until Dongchen couldn't feel that kind of absorption that he took his hand away.

"This guy..."Dong Chen looked at his palm, and then looked at the situation of Frost Grief, which was almost the amount of blood that had almost sucked ten normal people dry.

If it weren't for Dongchen's super recovery ability, I'm afraid he wouldn't have been able to withstand such a consumption of Frost Sorrow...

But just after Dongchen took it back, he heard a very immature voice, it should be the sound of hiccups, Dongchen was sure that he heard it correctly, but he looked around and looked around, and he didn't find anyone.

"Strange... I can't have auditory hallucinations, right?" Dong Chen asked himself, such a thing would definitely not happen to him.

But the source of the previous voice was illusory and ethereal, so that Dongchen couldn't find it at all...

On the fifth day, this day was already Dong Chen's last day for the demon kings, but Dong Chen found that his frost grief seemed to have changed a lot.

The most obvious thing is that when he holds the frost grief in his hand, the sword disappears directly, but when Dong Chen has a little fighting spirit, it will appear on its own.

Dongchen felt that he had hit a ghost, but what made him even more ghostly was that kind but unfamiliar voice came from the frost sorrow in his hand...

"Thank you, master...", the voice was very crisp, it was Dongchen who just heard the hiccup yesterday.

This voice made Dong Chen look at the frost sorrow in his hand in disbelief, this sword has been in his hand for a long, long time, not to mention more than 10,000 years.

It was the first time Dong Chen had heard that the frost sorrow in his hand could speak...

"The hosts... I'm a sword soul..."The voice came out again, and the next moment, a soul the size of a palm appeared in front of Dong Chen's eyes, and that feeling was very familiar to Dong Chen, it was the sorrow of frost.

But Dong Chen never thought that the Frost Sorrow would still have a sword soul...

"You only appeared after devouring the death air, right?" After Dongchen thought about it, the only possibility was this.

"Hmm... Thanks to the abundant spiritual power in the blood provided to me by my master, I can finally wake up..."Sword Soul said excitedly.

Dong Chen was also very excited, you must know that a sword can give birth to a sword soul, it is definitely beyond the level of an artifact, if you look at the situation in this world, the frost sorrow that can now be included in the body is more appropriate to call it a spiritual weapon.

Dong Chen was excited, but he still hurriedly asked the sword soul, how is the change of this attribute, after all, the frost grief has increased, he is naturally very happy, but if he can't even put the ultimate, then the problem will be serious.

Fortunately, all of Frostmourn's skills are still there, and a new skill has been added, the unity of human and sword, whose attack power is equal to the sum of Frostsorrow at the level of Dongchen and the spirit weapon.

At the same time, after Frost Sorrow advanced to the spirit weapon, not only did he have a sword soul, but also became a spiritual treasure that could grow, as long as Dong Chen provided sufficient soul power, Frost Sorrow's advancement was even easier than himself.