On the mountain cliff.

Learning that the nitrogen in the surrounding area had begun to change, the atmosphere of the entire project team immediately tightened.

Even Wang Qiang, who had been dealing with spiritual energy and evil energy in the Damo Realm for a long time, couldn't help but feel a sense of pressure.

After all, this was a major project concerning the local spiritual energy, potentially involving some ancient secrets!

And just as he heard Zhang Zhiming's report for the first time,

Lin Ziming quickly looked at Wei Fan, speaking hurriedly:

"Clan Leader Wei, take action."

Wei Fan nodded heavily and took a pill from his hand.

Then, disregarding the consumption of spiritual energy, he extended his divine sense to the maximum range.

He had swallowed a Spirit Recovery Pill, a top-tier second-level pill which can restore a large amount of spiritual energy in a short period.

If Wei Fan's divine sense "blue bar" value was 100, the effect of the Spirit Recovery Pill would be 500.

Though somewhat wasteful, this was not the moment to promote thrift.

As Wei Fan expanded his divine sense,

simultaneously, several sophisticated detection devices began operating at the east, south, west, and north sides of the cliff.

Zhao Zhiming's position was in the east, while the west side had a sensing net in control.

At present, the ground was covered by a fly-scale IZC sensing net, and the Y particles were only picometer-sized, which felt gigantic concerning the sensing net's openings. Once passed through, it would certainly leave a substantial feeling.

As long as the Y particles began surfacing from the underground, the sensing net would detect their presence at the first moment.

Additionally,

considering the 'delivery' outlet might appear in the air,

Li Bai'an and his team specially used drones to set up a circular network around, acting as a patch.

Besides the east and west directions, several devices in the north and south marked a large number of nitrogen molecules with ETEO— the diameter of nitrogen molecules being 0.304 nanometers, and ETEO's radius limit is 0.013 nanometers, making marking quite easy.

These days, basic isotope marking methods have developed to a very mature stage, let alone advanced tools like ETEO.

It's said that a few years ago, the Russians used the CCD system to build a highly sensitive marking module that could mark photons swiftly within 0.0002 seconds.

However, due to the lack of related papers and public reports, the international community is still somewhat skeptical about this technology.

Regardless, marking nitrogen with existing technology is quite a straightforward task.

This means,

Wei Fan primarily focuses on sensing the appearance position of the condensed Y particles, while the technological instruments are divided into two functional types:

The sensing net is responsible for detecting the emergent regions of Y particles, and ETEO focuses on tracking the disappearance points of nitrogen molecules.

This acts as a double insurance.

After everything was ready, everyone began to wait quietly for the results.

After more than forty seconds passed this way, Zhao Zhiming suddenly raised his hand:

"Report, the total amount of nitrogen in the surrounding air has reduced by half, but the portion of nitrogen we marked hasn't decreased at all!"

Li Bai'an's eyebrows furrowed instantly:

"The marked nitrogen hasn't disappeared? How can this be?

Could it be that the 'entry' absorbing nitrogen is exclusive to carboxyl marking?"

Wang Qiang shook her head, denying this hypothesis:

"It shouldn't be like this...

When we initially analyzed the Earth's vein flames, we marked carboxyl and 15N, and later, when we had more samples, even tried with sulfur isotopes.

The reaction chain can observe the generation of Y particles with nitrogen-bearing polymers; otherwise, we wouldn't manage to mass-produce the short-term version of Earth's vein flames."

Silently, Li Bai'an again looked at the main control of the sensing net.

However, to his disappointment, there was no significant change on the main control.

There were several slight fluctuations, but those were small peak gatherings of Y particles moving freely with the air.

Occasionally, one or two particles passed through the sensing net, holding no practical value.

Seeing this, Li Bai'an's frown deepened further:

"The total amount of nitrogen has disappeared by half. If it's due to some unknown uncontrollable factors, so be it, as the importance of 'entry' is far less than 'exit'.

But why aren't there any Y particles appearing now?

Is it because the reaction hasn't ended, or the outlet where Y particles dissipate isn't on the cliff but in some surrounding areas?"

Li Bai'an's tone was a bit grave, seeming to develop toward a not-so-good direction.

There must be an outlet for Y particles, that's beyond doubt.

If not on the cliff side, then it must be somewhere nearby.

However, the word "nearby" sounds simple, but in practice, it's extremely challenging.

Because this place is a mountain forest, not flat ground.

Even just monitoring a single Father-in-law Peak is of exceptionally high difficulty.

Speaking of such IZC sensing nets.

The cost of one square meter of such a sensing net requires over 60,000, even if the precision is lowered, it still needs at least more than 30,000.

And even for the cliff area near Father-in-law Peak, the area covers more than four or five square kilometers.

Although four or five square kilometers doesn't seem big, when converted to square meters, it's four or five million square meters!

Even considering the extreme importance of the detection task, and that the rabbits are willing to spend the money, gathering enough sensing nets in a short period is by no means easy. After all, this is not regular stock.

Under usual circumstances, a research institute having two to three hundred square meters of reserves is already quite numerous.

Watching the continuously decreasing nitrogen, Li Bai'an pressed his temples with his thumb joint, somewhat vexed:

"After all, it's because our equipment is not advanced enough... especially for such an unknown field like cultivation, existing experience is very hard to match."

Hearing this, Wang Qiang nodded with deep understanding.

Currently, the various researches in the Damo Realm have made rapid progress, but still, many critical nodes are stuck at bottlenecks.

This is a rather helpless situation.

Rather than a lack of knowledge, the specialization is somewhat mismatched.

After all, our present instruments are not designed specifically for cultivation, just like sending a tank into a naval battle; except for the modified 59, others can't show any strength.

Though the camp has started researching new instruments and continued for several months,

even if the progress was faster, it wouldn't be possible to use them on this occasion today.

Then Li Bai'an turned his gaze towards Wei Fan.

This 'Chief Instructor' of Ju Mang Base is now the only hope.

After another half a minute,

Wei Fan opened his eyes, a bit tired, and looked at Lin Ziming and the others, shaking his head apologetically:

"Sorry, Colonel Lin, I couldn't sense the flow of evil energy."

Upon hearing this, the atmosphere on site visibly dimmed.

For researchers, nothing is more frustrating than having a reaction occur right in front of them, yet being powerless.

This feeling is similar to being like the husband in those unspeakable films, powerless and furious.

Perhaps sensing this despondency, even the sky began to slowly rain.

The raindrops were small.

But a winter rain falling on one's face feels like being cut by knives.

Seeing this, Li Bai'an sighed lightly, just about to call everyone to take shelter from the rain,

when out of the corner of his eye, he glimpsed the main control screen.

As mentioned previously, once this screen came in contact with Y particles, it could sense and display them.

In the past few minutes, its line remained unmoved, like a corpse lying flat.

However, at this moment...

This screen frenetically displayed fluctuating bands, like turbulent waves crashing towards the shore!

Li Bai'an wasn't the only one who noticed the change on the screen; others also noticed it.

One second later,

Wang Qiang, Li Bai'an, Zhang Zhiming, Lin Ziming, and even Daoist Huang,

all looked up at the sky simultaneously.

Finally, it was Wang Qiang who voiced everyone's sentiment:

"Holy crap, is the Earth Palace in the sky???"

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