"What? Snow demon?" Levi was slightly surprised.

Earl Yinshan nodded and took Levi to the prison inside the castle.

The prison in Silver Mountain Castle is not as deserted as the Black Snake Castle. Many criminals are imprisoned there.

The prison is divided into two floors. The first floor is where some criminals among the civilians are imprisoned, while the second floor, Levi discovered, is where knight-level warriors are imprisoned, and there are even peak knight-level warriors.

Levi couldn't help but sigh, fortunately he was careful enough when he was weak before, otherwise he would be locked up by Earl Yinshan, which would be terrible.

As expected of an old noble family, the Seven Knights of the North are indeed formidable.

Finally, Earl Yinshan brought Levi to the most remote corner of the second floor.

Unlike other prisons, this cell is built entirely with hard boulders and is covered with iron nets, making it very solid.

With the level of craftsman Levi has, he can tell at a glance that there are traces of mithril mixed in the iron net. Although it is very little, it is present.

Inside this cell was a humanoid monster dressed in tattered clothes, with pale blue skin, and much of its body already rotted away, even exposing its bones.

The humanoid monster was now clawing at the prison wall, occasionally bumping into the mithril iron railings, which would cause a puff of green smoke to come out, and then it would shrink back.

Levi looked carefully and saw the face of the monster.

It can no longer be called a face, it's like the rotting zombies in "Resident Evil" or "The Walking Dead", with light blue bones and teeth protruding from the facial muscles.

The eye sockets of this monster were also emitting blue fire similar to that of the two brothers of the Mo family.

This is the horrible undead monster that has gradually appeared in people's mouths in recent years, especially the nobles in the North, the Snow Demon!

At first glance, they look like zombies.

"Master, have you discovered anything?" said Earl Yinshan.

"Judging from what these monsters were wearing when they were alive, they were indeed living people. They were wearing clothes from the Kingdom of Eternal Night. The source of their power should be the Frost Heart in their bodies." Levi said.

"That's right, and after my experiments, I found that these monsters are indeed particularly afraid of mithril products. I just blended one or two mithril into these iron nets, and they dared not touch them. Once they touched them, it would burn their bodies." Earl Yinshan said.

"But if the mithril content is too low, they will ignore the fear brought by the mithril. The higher the mithril content, the greater the damage it causes to them."

"I once tried to tie a piece of pure mithril to it, and soon a big hole was burned out of it by the mithril."

"And if we use ordinary iron weapons to attack, then even if the monster's legs are cut off, it can rely on that mysterious power to slowly heal."

Earl Yinshan had a heavy expression on his face. This kind of monster was beyond common sense. Their great knights were fine, but ordinary mortals were no match for this kind of monster.

The other party neither eats nor drinks, is not afraid of death, and as long as the Frost Heart is still in his body, he is almost immortal.

Unless they are crushed into pieces, they will be basically fine if they have missing limbs. I heard from some people on the front line that some powerful snow monsters, whose skeletons are completely broken into pieces, can slowly heal, but their strength will drop greatly after healing.

This is totally irrational.

When Levi heard this, his heart moved.

"My Demon Shark and Demon Mountain use the same energy. Does this mean that they can also heal their broken limbs?"

He withdrew his thoughts and said, "What does the Earl plan to do next? It seems that the snow demon's southward march is a foregone conclusion."

Earl Silver Mountain sighed, and then said: "Yes, it is too difficult to get everyone to unite. What I can do now is to strengthen the defense of Icewind City so that I can protect my people when the snow demon comes in the future."

"Fortunately, I have the mithril equipment forged by the master. In the future, I will let those elite soldiers and knights use these equipment to fight against the snow monsters. It won't be a problem to fight ten people at once. The difficulty lies in the production of mithril."

Levi also sighed and said, "Icewind City is very lucky to have a leader like Lord Earl."

After leaving Yinshan Castle, Levi was thinking about the snow demon.

In general, the Snow Demon's strength is not very strong. Its strength lies in its immortality. However, for me who has a full set of mithril equipment, it is nothing.

After seeing the snow monster, Levi was less afraid of that unknown existence. This thing was much weaker than the evil spirit. It was equivalent to an enhanced version of a zombie, but it did not have the same contagiousness as a zombie.

These are monsters spawned by the devil's tide.

"If I have the chance, I can go to the Kingdom of Eternal Night to take a look at the situation there, and to get more Frost Hearts to improve my proficiency in the Seal of Hell."

"The materials for the other seals are hard to find, so I'll first level up the Flame Stream Seal and the Hell Seal to their maximum levels and see what the results are."

"With the Demon Shark and the Demon Mountain, plus my strength, if we are careful and cautious, there should be no objective danger in the Kingdom of Eternal Night."

Levi went to the Shining Tavern and first went to see the rewards of his commission.

In terms of breathing techniques, I also bought a book called "Flying Fish Breathing Method" and a book called "Mountain Monster Breathing Method".

The Flying Fish Breathing Method is a superficial level of blood breathing method, a speed type. Judging from the pattern of the little man, Levi can practice it to the limit of the fifth level.

Flying fish is a huge fish that can swim in the sea and enter the sky according to legend. It is said that this creature feeds on "clouds".

"Yes, after practicing to the limit, you can break the limit of the Siren Breathing Technique."

Currently, the progress of breaking the limit of Siren Breathing Technique is (1/5). A book of "Flying Fish Breathing Technique" can increase the progress of breaking the limit by 2 points.

The "Mountain Monster Breathing Technique" surprised Levi a little. There were thirty kinds of little man patterns. Mountain monsters were monsters in the folk legends of some regions, with the power to move mountains and the might to cover the earth.

Similar to the Human-Faced Spider Breathing Method, the Mountain Monster Breathing Method should be the best among the superficial level blood breathing methods, and can be practiced to the limit of the sixth level.

This is a power-type breathing method, with a sixth-order limit, which can be converted into 3 points of limit-breaking progress.

And his progress in breaking the limit of the Giant Rhino Breathing Method was exactly 3 points away.

"Perfect, the Giant Rhino Breathing Technique will soon break the limit."

Levi was secretly delighted. With his current training speed, it should only take him three months at most to master this mountain monster breathing method to its limit.

Levi was very satisfied with his gains in breathing techniques.

Finally, there is a clue about the ice ape blood needed to practice the giant breathing method.

The person who provided the clue was a wandering knight from the Kingdom of Eternal Night. As a mercenary of the kingdom, he went to the Kingdom of Eternal Night to fight against the snow monster.

He heard that in the Kingdom of Eternal Night, the indigenous people in a certain area believed in a totem called the "Great Ice Ape King."

Levi readily paid the bounty to the wandering knight and asked about the area where the indigenous tribe was located.

"The Kingdom of Eternal Night, Icicle Islands." Levi memorized this place name deeply in his mind.

"Now there's one more reason to go to the Kingdom of Eternal Night."

"Both the Undead Core and the Ice Ape Blood can only be obtained in the Kingdom of Eternal Night."

In the end, only the dust of the dead and the worm eggs were left, and still no news.

Especially the planarian eggs, this thing is really hard to find. Levi has been looking for it for so many years but has found nothing.

"If it doesn't work, just prepare to have a hard time." Levi said helplessly.

As for clues about the four major families, there was no gain.

These days, Levi found a place to live in Icewind City.

In two days, I had mastered the "Flying Fish Breathing Method" and the "Mountain Monster Breathing Method".

Levi——

Flying Fish Breathing Method: Level 1 (1/1000)

Mountain Monster Breathing Technique: Level 1 (1/1000)

…

The secret medicine needed for the Flying Fish Breathing Method is the "Rain Swallow's Nest", a specialty of the seaside.

It is said that these rain swifts like to prey on bigfin fish in the sea, which is a small fish that can ride the wind and waves and glide hundreds of meters on the sea. After swallowing it, these rain swifts will digest it in their stomachs and then spit it out, using the digested food to make a "rain swift's nest".

This is a delicious food that costs a lot, but for Levi, it is not a problem. Some herbal medicine shops in Icewind City sell dried Rain Swallow's Nest.

So it is easy to practice.

The secret medicine needed for the mountain monster breathing method is the powder ground from the "stone turtle shell", which is also a common material.

In general, as long as the breathing method is not of excellent quality or above.

These low-level secret medicines are relatively easy to find.

With the secret medicine, once you get started, your future journey of gaining experience will be quick.

There was nothing to do in the territory for the time being, so Levi was not in a hurry to return to the territory, but lived in Icewind City.

Every afternoon and evening, Levi would take some time to go to the Shining Tavern and eavesdrop on the conversations of the drinkers.

I hope to hear useful information from these conversations, such as information about the four major families.

Of course, most of the time, they are useless things.

The topics that were talked about were nothing more than the same old things, such as the war in the South, rumors of evil spirits in certain areas, and where the Wilderness Brotherhood was causing trouble.

This went on for many days.

Levi never stopped doing his daily homework.

Flame Stream, Hell, Black Snake, Blood Whale, Flying Fish, Mountain Monster, Cross Slash...

If you have some spare time, you can play around with planarians and giants.

A month later, Levi's flying fish and mountain monster all reached level four.

After completing the transaction with Yinshan today, he went to the tavern to eavesdrop as usual.

With his advanced vibrational perception, he can hear a lot of useful things.

He has been doing this for some time.

He accidentally "picked up" a little money in the wilderness, accidentally punished several robbers and "confiscated" their illegal gains, and accidentally found out how many mistresses a certain noble had, even including some scandals of Earl Silver Mountain.

"Yinshan is actually a homosexual. I knew it. Such a handsome guy..." Levi looked gossipy.

"Fortunately, I always wore a mask." Levi was thankful again.

He came to eavesdrop again today.

"We can't stay in Icewind City any longer."

"What's wrong?"

"I heard... I heard, don't tell anyone else, I heard that an evil spirit broke into Icewind City and attacked a priest of Icewind Church. That priest... his death was horrible, as if he was strangled to death, and his eyeballs were popped out."

"How do you know it's an evil spirit? Could it be that some thugs committed crimes and deliberately created the illusion that it was an evil spirit? This has happened many times recently."

"Impossible. Which thug could enter a heavily guarded church? Moreover, the Archbishop of the Ice Wind Church is said to have personally taken action. The evil spirit actually tried to possess the Archbishop and was severely injured by him. Now the evil spirit has escaped. I don't know who it possessed. Damn it, this is the most terrifying thing, because after the evil spirit successfully possesses, if it doesn't attack, you can't tell the difference at all."

"Is there such a thing? Then I really have to leave for a while."

Levi, who was drinking alone in the other box, suddenly frowned.

"Evil spirit?"

"It actually appeared in Icewind City."

Thinking of this, Levi immediately returned to the hotel, packed up his luggage and prepared to leave.