The demon lord's divine thoughts come and go quickly.

He didn't give a signal to stop Zhang Heng, obviously acquiescing to the matter.

Therefore, no matter how painful the old demons are, they can't make trouble for Zhang Heng because of this matter.

What's more, they are no longer in the mood at this time.

Zhang Heng's breakthrough made their shock more and more intense.

"It seems to be a bit too much...... Zhang Heng keenly captured the emotions of the demon lord.

Although the demon lord didn't say a word, the chill in his mind couldn't be hidden from Zhang Heng.

He is willing to use this to show his value and seek a safer environment.

But he didn't expect that the movement of this breakthrough was too big, and the resources consumed were even more than imagined, and even alarmed the demon lord and made him jealous.

"However, it's okay, before Dancheng, he won't touch me, but will be false with me, after Dancheng, it's hard to say......" Zhang Heng's mind was spinning, and he suddenly felt that this situation was not too bad.

Although the demon lord was jealous of him, it made him safer.

The reason is very simple, that is, the demon lord has already invested in him.

After spending a huge amount of elixir, the demon lord also had to be moved, then, of course, he wanted to repay.

Otherwise, wouldn't so many elixirs be wasted?

Before alchemy, he was absolutely safe.

After alchemy, it is the time of death.

This point, whether Zhang Heng breaks through or not, cannot be changed.

Because this is a doomed thing, although he doesn't know the specific purpose of the Heavenly Soul Blood Melting Pill, but he can make the demon lord pay so much attention and pay such a big price...... It can be seen that this pill is not trivial, Zhang Heng has mastered the pill, this is a capital crime!

The cunning rabbit is dead and the lackey is cooked, and the bird is good and the bow is hidden, Zhang Heng knows this truth.

"My only chance to get out is at the moment of Dancheng......" Zhang Heng had a faint premonition in his heart.

It's just that he doesn't have an eyebrow on how to do it.

Before that, he decided to take advantage of it first.

First of all, it is the elixir that makes up for the soul.

After he made a request, the old demons were silent, and one by one they stared at Zhang Heng as if they were thieves.

They are clearly unwilling.

"I will only take three ...... at most," Zhang Heng promised.

The old demons breathed a sigh of relief.

Under their strict knowledge, Zhang Heng found three elixirs, and after swallowing them, he also made up for the trauma of his soul.

His state has finally returned to his heyday.

The demon lord gave a period of one month, but the time he spent was less than a day.

"The demon lord said that I was allowed to choose any treasure as a deposit...... "Zhang Heng looked at the old demons.

"Yes, there is, but you can only choose one!" the old demon hesitated for a moment and said emphatically.

"Of course. Zhang Heng nodded.

But this group of old demons was very uneasy, and they had to follow him, which made Zhang Heng cry and laugh, could he still eat the treasure?

The Demon Lord's vault is very large, and many treasures have been handed down from ancient times.

"In the stone chambers No. 20 to No. 30, there are many spiritual weapons, talismans, exercises, etc., which you can choose. "The old demons gave a guide.

This is their habitual thinking, thinking that Zhang Heng is a Terran monk, so he naturally wants the treasures of the cultivators more.

Zhang Heng had nothing to do, anyway, there was still a lot of time, so he went to the No. 20 stone chamber to choose.

As they say, there are many relics of the monks here, and each one of them is an ancient treasure and a great power.

"Back then, the Terran monks invaded my demon domain and were killed by an unknown number of people, these are all their relics......," an old demon said through gritted teeth.

These things are all their trophies, but that war was a defeat in the Demon Domain.

Even these demon clans, if it weren't for the strong men of the human race, they would have been wiped out a long time ago.

Every time they thought of this, they were very ashamed, and the more unkind they looked at Zhang Heng.

Zhang Heng ignored their eyes, he was carefully selecting the treasures, but unfortunately, in the end, he didn't make any choice.

It's not that these relics of the Terran monks are not eye-catching, but there is nothing amazing, which is not what he expected.

He walked through the stone chamber, but in the end he still didn't make a choice.

"Boy, what the hell do you want?"

The old demons were impatient and urged Zhang Heng.

"I want to be able to create a material ...... that misses the arrow," Zhang Heng replied after thinking about it.

The Sunbow is powerful, but it is incomplete without a bow and no arrows.

He used the Killing Spear as an arrow loss, which was only an expedient measure, but it was actually not suitable, if it was used for a long time, the disadvantages would be too great, so he had to create his own arrow loss.

"Refining materials?"

The old demons nodded and took Zhang Heng to the other stone chambers.

For refining materials, they don't collect much.

There are few demon clans who know alchemy, and even fewer who know refining, elixir, they can still eat it in one bite, but the refining materials are not edible, and very few demon beasts will deliberately collect them.

There were only six stone chambers in total, and Zhang Heng quickly finished shopping.

To be honest, there are a lot of materials that can be refined into arrows, but they do not match Zhang Heng's expectations.

The arrow he wants is a real big killer, and when an arrow is shot, it will inevitably kill the opponent!

"What's in that stone chamber?"

Passing by a stone chamber, Zhang Heng pointed to it, and he saw many demon beast bones.

"What do you want to do?"

"Boy, I warn you, don't fight the idea here!"

The old demons were very vigilant and immediately stopped Zhang Heng, they were unwilling to let him enter it.

"I'm just a little curious. Zhang Heng said.

"This is the corpse of the demon clan...... an old demon explained.

Zhang Heng suddenly realized, no wonder they were reluctant to enter it by themselves.

The corpse of the demon beast, of course, is a treasure for the monk.

Such as scales, you can refine armor, fangs, flying swords, its eyeballs, heart, demon pills, can be used in medicine, even flesh and blood, it is also a great tonic......

But, if it's the monster itself, it must be a different feeling.

Therefore, the old demons were reluctant to let Zhang Heng worry about it.

"I have no intention of desecrating the corpse of the demon clan's predecessors, it's just that I want to find a suitable arrow, maybe there is something I want here. Zhang Heng said: "The demon lord asked me to come here to pick a treasure, but it didn't say that I couldn't choose what the demon beast was." ”

The old demons looked angry, and they wanted to slaughter Zhang Heng immediately.

But Zhang Heng was not afraid, before Dancheng, the demon lord would not let him be harmed, there was no doubt about it.

"You can only choose one!"

The old demons finally relented.

Maybe it was because they were extremely disgusted with Zhang Heng and wanted to get rid of him quickly.

In short, Zhang Heng entered the stone room.

In the stone room, there are many corpses of demon beasts, many of which are very intact, for example, Zhang Heng saw the corpse of a blue-eyed blue-maned beast as huge as a hill, although it has been dead for many years, it still exudes a faint coercion.

This is the corpse of a great demon!

Zhang Heng looked at it a little, his heart was hot, in his opinion, this stone room was the real treasure house.

If all the corpses of the demon beasts were handed over to him to deal with, then it would be enough to refine countless spiritual weapons!

"Hurry up, don't waste time!"

The old demons became more and more impatient, and led the Terran monks to choose the relics of the same clan, which made them feel very strange in their hearts.

"Hey, what is this?"

Zhang Heng's eyes suddenly lit up, and he looked at a stone platform placed in the middle of the stone room.

On top of the stone platform, there is a huge tooth!

This tooth was hideous and huge, seven or eight meters long, flashing with cold light, and the most important thing was that Zhang Heng actually felt a faint dragon power from it!

"Bold!"

"You can't choose this!"

"Get out of here!"

The old demons' expressions changed greatly, and they wanted to drive Zhang Heng away.

"This turned out to be the fangs of the dragon!" Zhang Heng recognized this thing, and his heart suddenly beat faster, the bowstring of the sun-shooting bow was the dragon tendon, if the arrow was refined with the dragon's fangs, it was extremely suitable.

"That's right, it's the dragon's fangs, but you can't choose it. ”

The old demons' faces were ugly, and some even began to push Zhang Heng.

"You can choose everything else, but this one can't. ”

Zhang Heng frowned, but he didn't move.

"I'm just obsessed with this!"

One of the old demons sneered and said.

"Do you know whose tooth this dragon tooth is?"