A large amount of array patterns in the third level of Qi Refining Period about light and shadow transformation came into Lin Feng's mind and was deeply imprinted in his memory.

After a while, he opened his eyes and couldn't help but sigh:

“It’s really amazing.”

He already knew the specific content and limitations of this array pattern.

As a formation pattern, light and shadow transformation cannot exist independently. It must be "linked" with another formation before its magical function can be revealed.

For example, Lin Feng's Stone Exploration Formation.

He wanted to start drawing the array pattern immediately, but he suppressed this thought and was not in a hurry.

He looked at the other two unlockable array patterns.

······

[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)]

······

Lin Feng hesitated a little when he saw the huge price that it would cost, but he quickly threw away the hesitation and said firmly:

“Unlock all!”

The next moment, Lin Feng felt that even more huge formation knowledge had entered his mind. This time, there was an extra amount of formation knowledge, and he couldn't help feeling dizzy.

After a while, Lin Feng slowly opened his eyes, and a hint of fatigue appeared in his eyes.

For the first time, he learned that absorbing these knowledge of the formation requires energy consumption.

He barely cheered up his last spirit, hid everything on the table, then climbed onto the stone bed, and began to meditate and practice to restore his mental state.

This practice ended the next morning.

Facing the morning light, Lin Feng opened his eyes, his face full of energy, and he had completely recovered.

Gululululu......

Lin Feng covered his stomach and couldn't help but smile bitterly.

He walked out of the bed, took out the bottle of the fasting pill from under the stone bed, and took out a white fasting pill from it.

"Zhao Dalong said that this kind of fasting pill can make a practitioner not have to eat and drink water for half a month. If this is true, then the person who created this kind of pill is simply Mr. Yuan from the Immortal World."

Lin Feng looked at him curiously for a few more times, then put it in his mouth and ate it.

It tastes a little dry, but it can still be eaten.

The fasting pill worked very quickly. Within a minute, a warm feeling of fullness came from his stomach.

This time, Lin Feng was neither tired nor hungry, so he took out the stone-detecting plate, the array pen and the drawing array liquid were placed on the table.

Then he began to prepare to transform this stone exploration array here.

"You have to wipe off all the original array patterns first, and then draw one again with a smaller scale, otherwise there will be no place to draw the newly added array patterns."

He took a clean linen cloth and then wiped the array pattern on the array plate hard. After the surface of the array plate was clean, he cooled the array plate for a while to make the surface dry.

Then he did not carve the array pattern, but instead used his magic power to dig out a groove of the same size as the mineral groove on the surface of the array plate with a sharp fragment of spirit iron.

In this way, this array disk will have two mineral tanks.

Only then did he start preparing to draw the formation.

While using the array pen to dip the array liquid, he thought about the formation drawing this time.

The formation drawing this time is different from before.

The stone exploration array he transformed in the past was transformed on the original formation, so at most it made the stone exploration array a little more complicated. Its essential foundation has not changed, but this time the light and shadow transformation array pattern is different.

Because it belongs to a semi-independent array pattern, if the Stone Detection Array is a game, then the light and shadow transformation array pattern is equivalent to a game enhancement mod or external enhancement pendant!

Abbreviated as plug-in!

"I didn't expect that I could create plug-ins one day?" Lin Feng thought with a strange expression.

Putting aside these strange ideas, Lin Feng began to carefully portray the array patterns.

A quarter of an hour later, he wiped the sweat from his head, then took a small pure iron and a piece of small spirit iron from the side, and placed them in the mineral trough.

Looking at the brand new formation in front of him, Lin Feng couldn't help but breathe a sigh of relief and a smile appeared on his face.

"It's done, the portrayal is pretty perfect, nothing wrong."

I saw a complex formation appearing on this dilapidated circular array plate.

This formation consists of two complex circles, one large and one small. The large circle not only carved with complex patterns, but also has eight directional array patterns and two mineral grooves connected to the array patterns.

The small array patterns are also quite complex, and are very different from the array patterns of large circles.

The Baiwu text gradually emerged, and Lin Feng looked over.

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[Name: Light and Shadow·Stone Detection Array (First-level Mid-grade Formation)]

[Effect: Detection stone - Perceive the specified minerals below the first-order quality contained in the environment within 60 meters, and display their directional position and specific shape through light and shadow.]

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

[Related array pattern knowledge can be unlocked:]

[1: The perception range diameter is expanded to one hundred feet. (Spend a piece of first-level medium-grade spirit stone)]

[2: Add an additional mineral trough to sense three minerals at the same time. (Spend two first-level medium-grade spirit stones)]

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

[4: Array pattern: Real light and shadow - In the form of real light and shadow, the specified information detected by the formation is three-dimensionally and accurately expressed. (Five first-level top-grade spirit stones)]

[5: Spell: Stone Detection (first-level low-grade spell): Use minerals within one level or more as the designated mineral medium, and use mana to sense the specified ore contained within a certain range within a certain range. (Spend a first-level low-grade spirit stone)]

[6: Unknown function. (It will cost one first-level low-grade spirit stone to find out)]

[Introduction: This is no longer a simple stone exploration array...]

······

Lin Feng couldn't help but sigh as he looked at the newly appeared Baiwu text.

Who could imagine that a few months ago this thing was still a broken and simple formation?

Let go of his emotions and Lin Feng inputs mana to the array plate.

The next moment, a scene that shocked Lin Feng happened.

I saw the complex circles on the array plate flashing rapidly.

First, the eight direction patterns representing the east, west, south, north, east, west, south, and north are flashing with dazzling red light.

Then the array pattern representing the transformation of light and shadow also began to flash black and white light, but nothing happened next.

Seeing this, Lin Feng inputted more mana.

Sure enough, I saw the next second that a black and white light ball phantom as big as a volleyball was gradually projected above the array pattern of light and shadow.

And in this black and white light ball phantom, clusters after cluster, little by little light dots and light piles dotted in it, just like a starry sky with black and white stars hidden in the light ball.

That represents the distribution of spiritual iron and pure iron within a diameter of sixty feet.

Lin Feng couldn't help but be stunned when he saw this.

He murmured:

"No wonder I thought it was weird from the beginning."

"This is not a formation of immortal cultivation......"
Chapter completed!