super comprehension memory

Iron Corpse was not in a hurry, since the treatment of Iron Corpse's corpse poison would not be completed immediately. At this time, it was the old locust tree that caught Zhang Heng's attention.

Ordinary old locust trees naturally don't have much use, but this old locust tree at this time is an old tree that has absorbed the yin energy for countless years, so its effect is naturally different.

"The heartwood should have been cultivated?" Zhang Heng muttered to himself, thinking of the uses of this kind of tree in his memory.

Because the core of this kind of tree has been maintained by the air and the air, it can be used as a material for magical instruments. Whether it is used for forging magical instruments or making talismans, etc., it is very useful. This can be regarded as an accident.

Harvested.

Unfortunately, this old tree is quite big. Zhang Heng still can't handle it for the time being, he can only stare at it.

He gave up the plan of dealing with the iron corpse and the old locust tree first, and without thinking any more, he came to the dry well, and Zhang Heng entered it again!

A few of them entered the dry well just now. Although they got the things, they did not inspect them carefully. When Zhang Heng entered for the first time, he already had a vague idea in his mind. The harvest this time will definitely not be small.

!

In the underground hall, Zhang Heng glanced around, skipping the two opened Yin coffins, and focused on the Yin coffin that had been opened by the iron corpse.

"I hope my guess is not wrong." After muttering, Zhang Heng stepped forward.

The Yin Coffin was empty, but Zhang Heng had already expected this. He turned over and entered the Yin Coffin, and then began to fumble around. Soon, his eyes suddenly lit up, and then he hurriedly searched the Yin Coffin.

Hit it with one end and make a thumping sound!

"Sure enough! It is impossible to cultivate an Iron Corpse-level Infernal Corpse in this era without some special methods!"

A dark box was opened, and one of the items appeared in Zhang Heng's eyes. It was a gray bead the size of a fist with a very strange smell!

There is no doubt that this is the special magical weapon that Zhang Heng guessed!

The Yin Devouring Bead is a magical weapon specially used by evil cultivators to cultivate Yin evil treasures. Its function is to collect the evil power scattered in the air, thereby emitting the aura that can nourish other things. However, it generally requires accumulation over many years.

Only then can it be truly used.

There is no doubt that this kind of thing is very precious, because it is really not easy to cultivate, and it is even rarer than a living iron corpse!

With the power of wish attached to his palm, he carefully took out the Yin Devouring Bead. Looking at this inconspicuous bead that exuded a chill, Zhang Heng was already thinking about how to use it.

First of all, this thing definitely cannot be used to raise corpses. Although he is not a good person, he is definitely not an evil cultivator. He is not interested in using other people's corpses as combat weapons at all. Of course, if there are free ready-made Inferi in the future,

He won't refuse either.

Secondly, although this kind of thing has many uses, it is also a very targeted special magic weapon. Its uses are mostly in the Yin attribute, so ordinary magic weapons or items obviously cannot be used.

Thinking of this, Zhang Heng already made a decision in his heart.

"Since it can only be used to refine magic weapons or items with Yin attributes, then the heartwood of the old locust tree should be the most suitable!"

Yes, the core wood of the old locust tree can be used to refine magic weapons and other things. If you add the Yin Devouring Pearl, you will get twice the result with half the effort. This is the most practical place for Zhang Heng!

Without bringing the bead with him, Zhang Heng turned around and put the bead into the secret box. This bead usually had no effect, and there was no benefit in carrying it with him.

After placing the Yin Devouring Beads, he turned over and got out of the Yin Coffin. Zhang Heng went to check the other two Yin Coffins again. When he was sure that nothing was found, he breathed a sigh of relief.

However, Zhang Heng did not leave immediately. He didn't think that such a strong Yin energy could be gathered in such a place. He didn't think it would be so simple. There might be some secrets!

Of course, it's not that there are any secrets like secret passages. The only secret he thought of at this time was the formation.

Since he has made up his mind to use this place as a place to practice in the future, he naturally wants to find this formation. He must know that he does not want to be surrounded by Yin Qi when he practices in the future, and it may even backfire in severe cases.

, then the gains outweigh the losses.

"It is indeed a formation, but this formation is quite strange. It should not be an ordinary formation."

Soon, Zhang Heng had understood the formations in the entire hall. However, Zhang Heng also began to be surprised, because he found that the formations here were really not simple.

At first glance, the shadow of the formation here is very blurry. It is really difficult to find it if you don't look carefully. But if you look carefully, you can find that this formation is actually very profound!

When this kind of formation is initially deployed, it may not be much better than the lowest-end formation, but it has about the same effect as the Yin Devouring Bead. As the Yin Qi gathers, this formation will become more and more effective.

It's so powerful, it's like a formation that complements the Yin Devouring Pearl!

After carefully studying the formation, Zhang Heng wrote down the formation routine, then came to one of the ever-bright lamps, and moved the ever-bright lamp directly. The next moment, the Yin Qi suddenly began to leak out, and at the same time, the ever-bright lamp also suddenly

Extinguish!

The reason why the ever-burning lantern stays on is precisely because of this formation...

After doing all this, Zhang Heng snapped his fingers, and a ray of light suddenly illuminated the underground hall. Then he looked at the atmosphere gradually returning to normal around him, couldn't help but smile with pride, turned around and left.

Returning to the ground, looking at the collapsed wall and the most damaged one, with a slight frown, Zhang Heng took out his cell phone and called Liu Yu.

"Hello! Who's there?" A vague voice came from the other end of the phone.

Hearing the vague words spoken by the other person, Zhang Heng smiled bitterly, having already thought of the result in his mind: "Still sleeping? You're not afraid of not being able to sleep! I have something to ask you for help here, come here quickly!"

"Eh? Xiao Hengzi? Let's just say who dares to call and harass us at this time, it turns out to be you!" Listening to the tone, Liu Yu finally regained some energy at this time.

"Are you awake? Come here as soon as you wake up. The address is... Remember, you have to bring a better steel knife with you. Don't forget!" Too lazy to chat with this guy, Zhang Heng said directly.

He showed his address and asked him to bring a knife. You must know that although he has the power of will, he can't kill the old locust tree without a knife in his hand!

"I know, I know! It's really hard to get a good night's sleep!" Liu Yu complained, but the voice of getting dressed could already be heard on the phone.

However, just when Zhang Heng was about to hang up the phone, Liu Yu suddenly subconsciously asked Zhang Heng a question: "By the way, aren't you supposed to go shopping with Sister Xiyao and the others today? Is it over so soon?"

"Well……"

Zhang Heng was dumbfounded, and then he remembered that it seemed that he had not said hello to Zhuo Xiyao and the others. For a moment, cold sweat broke out on his forehead, and his heart was twitching...