"This Plum Blossom Mother-in-law's maid doesn't look like a human being, and human beings can't have such a thing." At this time, Fan Tianken stepped forward and said in a deep voice.

"It's a pity that she escaped, otherwise she could have asked something." Lin Cheng looked at the burning wreckage on the ground, a little pity.

I almost knew the origin of the Six Yan Jue, and Lin Cheng was still more concerned about the monk in Tang Yang's mouth, and he always felt that it was not simple. However, it is better to investigate the situation under the green pond first.

"Could this Plum Blossom Mother-in-law's maid be possessed by something, that's why she has such strength?" Fan Tianken guessed.

"Moreover, according to what she just said about the slaves, could it be the three synthetic monsters of the Jigangmen, as well as Zang Lao and them?"

"It's useless to speculate now, the woman has fled." Lin Chengdao.

"Let's see what's under this green pool."

Lin Cheng jumped into the bottom of the pool.

Fan Tianken wanted to ask Lin Cheng about something, but found that Lin Cheng's focus was on the bottom of the pool, so he didn't ask any more and jumped into the bottom of the pool together.

As soon as Fan Tianken came to the bottom of the pool, he looked around, wanting to see what the abnormality Lin Cheng said.

Unfortunately, nothing suspicious was found.

Lin Cheng glanced at the bottom of the pool, and soon locked a place, and he strode out.

Stopped in one place, glanced around, and knocked on the floor under the pool.

"It should be here."

Fan Tianken stood aside, still unable to see the difference in the position that Lin Cheng was referring to.

I saw Lin Cheng suddenly raise his palm, exhale, and slam it to the ground.

Click.

He slapped a crack in the ground, and then cracked open, stretching three meters away.

Fan Tianken didn't know what Lin Cheng was doing.

"Brother Fan, come here and help." Lin Chengdao.

"What do you need me to do?" Fan Tianken asked.

"Spread all these stones." Lin Cheng said, picking up a cracked gravel and throwing it into the distance.

"Okay." Fan Tianken understood that it should be something hidden under the stone.

Then, seeing him move to Lin Cheng's side, he made a gesture with his palm against a broken stone.

The shattered stone actually flew into the air and sucked it in front of Fan Tianken. Later, Fan Tianken slapped his hand, and the gravel was slapped out.

The stone in the back, Fan Tianken, was also concocted in the same way.

One suck and one beat. The speed of moving stones is much faster than Lin Cheng.

"Huh? Brother Fan's trick is amazing. Lin Cheng saw Fan Tianken's technique and immediately became curious.

He found it handsome to move rocks with this trick.

"Oh. . . This is just a small trick used by True Qi, not a powerful means. If Brother Lin wants to learn, I can teach you. ”

When Fan Tianken learned of Lin Cheng's strength, he wanted to make friends more and more.

"You don't need to teach, I can learn it myself, Brother Fan continues." Lin Cheng made a gesture of please.

"Oh? All right. Fan Tianken couldn't help but wonder, although it was a small trick, it had to be studied for a few months, and if he didn't master the essentials, it would be difficult to learn.

He didn't think much about it, he just thought that Lin Cheng didn't want to accept favors.

It's a pity that this is a rare opportunity to win over Lin Cheng.

Fan Tianken continued to move stones with his true qi tricks, but he didn't guess Lin Cheng's thoughts.

He didn't know that Lin Cheng could learn as long as he wanted to learn something.

After Fan Tianken moved a few rounds, he found that Lin Cheng had actually learned his true qi tricks.

Suck the stones, then shoot them away.

"What! How did you learn it so quickly!? What kind of demon speed is this. Fan Tianken looked shocked and a little incredulous.

He kind of understood why Lin Cheng was a person from the mountain, and he could only be at the bottom of the mountain.

The learning speed of such demons is not comparable to that of ordinary people.

"Hehe, this trick is quite useful." Lin Cheng sucked the stone and patted it at the same time, and kept praising it in his mouth.

With a new way to move stones, these more than ten square meters of gravel were moved away by them.

Revealing the face below.

"This is!?" Fan Tianken looked at the bottom of the pool he was stepping on.

It turned out to be an iron gate.

The iron gate is more than three meters high and more than ten meters wide.

The door has a ghostly pattern, and it is very majestic.

In the middle of the two iron gates, there is a semicircular groove, and when the two grooves are combined, it is a circular groove. The cracks in the iron door were locked by several iron cables, and it was impossible to push them open.

They were stepping on the iron gates.

Fan Tianken couldn't figure out why this iron gate was installed under the pool.

He stomped on it and found that the iron door was not moving, as if it were an iron floor.

"This place is so deeply hidden, it can be discovered by Brother Lin, it's really amazing." Fan Tianken praised.

"Hehe, just a fluke. Now think about how to open it to be real. Lin Chengdao.

"If it is turned on violently, I am afraid it will destroy the contents inside."

Just now he used the perspective function to observe, there is a layer of protection on the iron door, and those protections are connected to the things inside, he thought, this protection should be to prevent someone from breaking the iron door from the outside to enter, a kind of self-destruction setting.

Fan Tianken knocked on the iron door and said in a deep voice: "This door is very strong, I'm afraid it will be difficult for us to break it with violence." ”

He had never seen a door of this material, and the technique did not look like modern craftsmanship.

He still knows a little about modern technology, and this is the first time he has seen this kind of technology.

"Indeed." Lin Cheng also discovered this.

"It seems that only the key can open this iron door." Fan Tianken said.

"This circular groove should be the key."

"We don't have it, though."

Fan Tianken stroked the circular groove in his hand and found that the groove structure on it was somewhat magical.

"Huh? This shape! Lin Cheng suddenly remembered.

"Isn't that a spherical structure made of a triangle?"

As he spoke, he took out the bronze orb.

"It's exactly the same!" Fan Tianken exclaimed.

"Is this the key?"

"Just try it." Lin Cheng was a little nervous, and slowly stuffed the bronze sphere into the groove.

Click.

The bronze sphere and the circular groove on the iron door fit together perfectly.

"It can be done!" The two were pleasantly surprised.

Lin Cheng felt that this bronze sphere was special from the beginning, and thought about putting it away to study it, but he didn't think it would be useful, but he didn't expect it to give him such a big surprise at this moment.

It turned out to be a key.

It's a mistake.

Immediately afterward, the sphere rotated in a circle in the groove, and shot out bursts of blue energy, burrowing into the iron gate.

It's like giving the iron door a kind of starting energy.

Then a mechanical voice sounded.

Suddenly, the ground on which they were standing began to move.

"Hurry back!" Lin Cheng seemed to have discovered something, and he jumped a few meters away.

"The door is open!" Fan Tianken found out.

At this time, the iron gate was cracking open in the middle and moving to both sides.

Reveal a storage space underneath.

A burst of sparkling light came from below, somewhat blinding.

Then a soft smell spread to the entire dark room, and the originally foul-smelling space instantly became fresh air.

It's like a garbage dump turned into a garden full of flowers in an instant.

It feels amazing.

"What are these?" Fan Tianken exclaimed.

As soon as you look at it, it's a pile of pink stones, the size of a baby's palm.

It's as tall as a hill bag.

In addition to the pink stone, there is a wooden box next to it.

"That's what I used to probe just now."

"But why didn't you see the wooden box?" Lin Cheng said secretly in his heart.

If a wooden box appears in the exploration space, he promises to remove it as soon as possible.

It is possible that the wooden box is hidden by pink stones, so it is not visible.

But it's not too late to get it.

"Let's go down and have a look." Lin Cheng jumped first.

Fan Tianken also jumped along.

As soon as Lin Cheng came, he picked up the pink stone and looked at it in his hand.

I didn't have time to check the spirit stone I had just explored, so I finally had time to observe the appearance of the stone at this time.

The stone was cold to the touch, and you could clearly feel the energy fluctuations inside.

"This stone looks like a source of energy? Also energy crystals are similar. Fan Tianken took a piece and weighed it in his hand.

"Brother Fan seems to know something, I don't know if I can say it." Lin Cheng asked.

"Hehe, of course you can, since Brother Lin wants to know, I'll talk about it carefully." Fan Tianken said with a smile.

"Energy crystal is a kind of artificial synthetic energy, which is a crystal that compresses chemical energy and various energy sources together, and its main role is small size and large energy."

"The main difficulty in the research and development of energy crystals is its stability."

"Because of its complex structure and its processing difficulty, each piece of energy crystal is worth a lot."

"How much does that cost?" Lin Cheng knows that often value represents its difficulty.

"The cost price of one is about 1 billion." Fan Tianken said.

"1 billion? Or is it the cost price? Lin Cheng was shocked.

It's hard to imagine that such a small thing costs so much money.

Although he is not short of money now, he is still a little surprised to make such a little thing for 1 billion.

"This pink stone is a lot like an energy crystal, and it looks like it's natural."

"If it is used properly, it may be better than energy crystals."

"I'm afraid I can sell it for 10 billion if I exile it." Fan Tianken said.

"Then there are so many here, I don't know how much it can be exchanged." Lin Cheng was a little shocked.

"Hehe, Brother Lin, warriors like us, no matter how much money there is, it's useless, after all, money is just secular currency, and it's enough to use it. I think it's more appealing to improve martial arts. Fan Tianken glanced at the wooden box next to him, intentionally or unintentionally.

"Yes." Lin Cheng very much agrees with this point of view, if there is a lot of money, it will not be of much use.

Lin Cheng also noticed the box, and he knew that Fan Tianken was embarrassed to take it.

After all, he discovered this place first.

However, if the other party hadn't brought him here, he wouldn't have had a chance to discover these secret treasures.

Lin Cheng is not an ungrateful person.

I saw him walk up and pick up the wooden box.

"I don't know what's in there?"

"Maybe this is the secret treasure of the immortals." Fan Tianken was also a little excited, wasn't he here for this?

Lin Cheng slowly opened the lid of the wooden box.

I saw a book and a cloth bag lying inside.

The name of the book is: Out of the Mortal and Into the Immortal.

"This... This is the cultivation method of immortals! Fan Tianken let out a loud cry of excitement.