Lin Feng looked at Baiwu's words.........

[Name: Stone Detection Array (Not Into the Flowing Array)]

[Effect: Detection Stone - From an environment within a radius of less than ten feet, sense the minerals contained in the first-order and specify their direction and position.]

[Note: The first-order lower-grade mineral ‘spiritual iron’ has been specified in the mineral trough.]

[Related array pattern knowledge can be unlocked:]

[1: The perception range diameter is expanded to thirty feet. (Filling the Five Spirit Stone fragments)]

[2: Add an additional mineral trough to sense two minerals at the same time. (Fill five spirit stone fragments)]

[3: The maximum level of perceived minerals is increased to the second level. (Spend 1 twelve-level medium-grade spirit stone)]

[4: Unknown function. (It will cost a piece of spirit stone fragment to find out)]

[Introduction: Although it is just a non-level formation, its perception range is no less than a more advanced formation.]

······

After thinking for a while, Lin Feng finally chose the first related array pattern.

Although the second related array pattern can add a mineral trough, allowing Lin Feng to discover spiritual iron ore while looking for pure iron ore, it is not very attractive to him, who is no longer short of spiritual iron.

After all, no matter how many Ling Tie is found, Deacon Wang will not reward Lin Feng too much. At most, how many months or years of work will be exempted based on the quantity. This is completely unnecessary for Lin Feng. He also thought of leaving this third level of Qi Refining. Who should stay longer?

There is no need to say much about the third option. It does not have a second-order mineral filling mineral tank at all, so it is useless even if it is unlocked.

The fourth related array pattern is quite attractive to Lin Feng, but he doesn't know what unknown functions represent. He rashly unlocks it. If he unlocks a garbage array pattern, he will lose money to his grandma's house.

Thinking of this, Lin Feng no longer hesitated and directly chose to unlock the first related array pattern.

The white light of spiritual energy in the spirit stone fragments disappeared rapidly, and the white fog text also changed rapidly.

At the same time, the knowledge of array patterns that expand the perception range and diameter was also instilled into Lin Feng's mind, making him close his eyes and concentrate on absorbing it.

After a while, Lin Feng opened his eyes and a strange color flashed in his eyes.

"This complex formation can no longer be considered as a form that is not as good as a stream, right?"

After savoring the mystery of the array pattern for a while, Lin Feng took out the array pen, dipped it in the array liquid, then took a deep breath, and his attention was all on the array pattern on the array plate.

Meditation,

Focus on the mind,

Draw the array pattern!

As the array strokes are drawn, new array patterns that are crooked but inexplicably artistic appear on the array plate, gradually blending with the original array patterns magically, as if they are born as a whole.

When Lin Feng's mana was consumed for half of the time, the new formation pattern had been drawn.

Lin Feng put down his pen, took down the spiritual iron from the mineral trough, put the pure iron fragments on it, and then looked at the newly formed white mist text.

······

[Name: Stone Detection Array (Pseudo-First Level Low-level Formation)]

[Effect: Detection Stone - From an environment within 30 meters, sense the minerals below the first-order quality contained in it, and indicate its direction and position.]

[Note: First-order top-grade mineral ‘pure iron’ has been specified in the mineral tank.]

[Related array pattern knowledge can be unlocked:]

[1: The perception range diameter is expanded to sixty feet. (It costs two first-level low-grade spirit stones)]

[2: Add an additional mineral trough to sense two minerals at the same time. (Fill five spirit stone fragments)]

[3: The maximum level of perceived minerals is increased to the second level. (Spend ten second-level medium-grade spirit stones)]

[4: Unknown function. (It will cost a piece of spirit stone fragment to find out)]

[Introduction: As a pseudo-first-level low-grade formation, its perception range and diameter are already quite excellent, but other qualities have dragged it down.]

······

"The maximum perceived value of thirty feet was drawn, and it seems that the array pattern is perfectly drawn!"

Lin Feng was very happy, but he couldn't help but raise his eyebrows when he looked at the introduction below.

"This means, can it be advanced only if I unlock all other array patterns?"

He looked at it for a while and then stopped caring.

Now he has no ability to unlock more things, and it is useless to see it.

He took the plate of the rock-detecting stone and put it into the package, Lin Feng took the mine hoe and other tools, and walked towards the Ling Iron Mine Cave.

As soon as he walked out the door, he saw someone he hadn't seen for a long time.

Zhao Yu.

Zhao Yu was wearing a dress similar to his, and was walking towards his stone house with worries.

"Zhao Yu!"

Zhao Yu was stunned, looked at Lin Feng, and a smile appeared on his face.

"Lin Feng."

Lin Feng walked over, looked at her face and said strangely:

"What's wrong with you? Your face looks so ugly. Are you sick?"

“······I’m fine, I’m just a little hungry.”

Lin Feng frowned slightly.

He always felt that Zhao Yu had something to hide from him, but she said that, so he didn't ask much.

"Tell me if you have something to do, I will definitely help you!" He said seriously, "We are people who have experienced life and death together!"

Zhao Yu looked at Lin Feng and nodded silently after a long time.

······

After parting with Zhao Yu, Lin Feng soon came to the entrance of the Lingshi Mine Cave.

Looking at the entrance of the cave that could accommodate more than 20 people side by side, Lin Feng fell into deep thought.

"Guate... unless you really can't find a little bit of pure iron, you still won't go."

"Now the perception range of the Stone Detection Array has reached thirty feet. Maybe I can check all the forks in the mines... except for the Guards."

He thought to himself.

Thirty zhang is already an exaggerated range. This level of range perception can save him a lot of walking time, and at the same time, he can also explore the depths of the ore wall. Maybe pure iron can be found there?

Three days later.

Lin Feng stood in the mine pit twelve meters below, looking at the red lights still flashing on the rock-detecting plate, and remained silent.

He looked up at the top. The hole he had dug before was a big hole, but now he looked like a bowl, which looked like a frog in the well.

"This is too deep..."

Lin Feng wailed.

He sat on the bumpy ground, grabbed his hair and said:

"When do you have to dig this? The radius is fifteen meters. That piece of pure iron will not be about 50 meters, right?"

"How should I go out? I was so digging so hard. I didn't expect that I had already dug so deep..."

"Do you have to wait for the mine seeker to pass by?"

"Hey, is anyone? Is anyone nearby? Someone..."

Bang!!!

A white thing suddenly fell in front of Lin Feng.

Lin Feng was startled.

"What's the matter... Well, it seems like a puppy. There are still people among the mine seekers who have the time to raise dogs? Why don't I know...?"

"Well, why is the claws of this dog so big and sharp? How come it looks like the claws of an Iron-Eating Beast..."

Lin Feng's pupils shrank, and his body froze instantly.

At this moment, the white "puppy" also stood up in a daze. After seeing Lin Feng, it spitted out its long lizard-like tongue, revealing two rows of hideous sharp teeth...

The forest wind is like falling in the cold winter.
Chapter completed!