On the cliff.

Hearing Wang Qiang's exclamation.

Lin Ziming and Li Bai'an exchanged a glance, and quickly hurried to her side.

After arriving at the area where the instrument was placed.

Li Bai'an first directed his gaze to Wang Qiang's hand, immediately recognizing the origin of the instrument in her hand:

"Hm? Ion Beam Instrument? Little Wang, did you detect any special particles?"

Upon hearing this, Wang Qiang raised her head with a somewhat complex expression.

Her eyebrows were twitching at this moment, and she said word by word:

"Academician Li, Colonel Lin, I found...

a small amount of Y particles in the air."

Seeing Lin Ziming and Li Bai'an somewhat puzzled, she continued:

"Y particles are the condensation particles produced by the microorganisms in the Earth's Vein Flame, also known as...

Evil Energy!"

Upon hearing this, Li Bai'an quickly took the ion beam instrument from her hand.

The instrument looked somewhat like a household vacuum cleaner, and the screen displayed several codes at this moment:

CM2, BT5, GK13, ER6.

CM2 represents oxygen molecules, while the latter two are carbon dioxide and nitrogen gas molecules.

And the last ER6...

is the designation given to Y particles by the researchers.

The ion beam instrument or microparticle field is actually a very peculiar domain.

In this domain.

As long as you have captured such a particle once, you can basically fully analyze its general properties.

Even particles like neutrinos, which are extremely difficult to capture, follow this rule.

Long, long ago, around the end of August back then.

After Liu Xiangqian's team discovered Y particles from the Earth's Vein Flame, their energy level was thoroughly recorded on the energy level spectrum.

Y particles, as a special type, surpassed the scope of ordinary gas-phase spectrometry, yet could be fully captured by the ion beam instrument.

Thus, Wang Qiang quickly detected the presence of these particles with a mere sweep of the instrument.

At this moment.

Wang Qiang held the ion beam instrument in her hand, murmuring:

"So that's it, so that's it... With Y particles present, everything makes sense."

Li Bai'an and Lin Ziming were somewhat puzzled.

However, unlike Lin Ziming, who was still a student.

Li Bai'an had no shortage of professional knowledge; it's just that he had only recently come into contact with the secrets of the Damo Realm, and many studies from earlier stages hadn't been fully understood.

So, at this moment, he hadn't fully connected the situation with his knowledge reserve:

"Little Wang, can you explain the situation thoroughly, from beginning to end?"

Wang Qiang nodded, and said:

"Academician Li, you should have seen in the records, back when we were studying the Earth's Vein Flame, we found a kind of unknown microorganism in a free state at the heart of the flame.

This unknown microorganism could survive in super high temperatures but couldn't detach from the heart of the flame—this was the finding back then, but now we've managed to completely separate it.

Its characteristics are similar to nitrogen-fixing microorganisms, capable of directly converting free nitrogen in the air into nitrogen-containing compounds, recorded in Chapter Forty-seven."

Then Wang Qiang gestured towards the air, saying:

"Clearly, there's a special environment near the cliff that allows the survival of some condensation microorganisms.

Because of such microorganisms, the total amount of nitrogen near the cliff is not high—it's all absorbed by them, undergoing special reactions to generate condensation Y particles.

And for this reason..."

Li Bai'an realized and picked up the conversation:

"And for this reason, the back mountain of Qingcheng Mountain is so cold, even historically referred to as the Ghostly Realm."

Upon hearing this sentence, Lin Ziming suddenly thought of something, and clapped his hands in realization:

"No wonder, no wonder, I wondered why it was so cold here, even Clan Leader Wei shivered when he first arrived here. At that time, I thought it was because the protective spiritual energy wasn't circulating."

Just as Lin Ziming mentioned.

Wei Fan, as a cultivator of the Qi Cultivation Ninth Layer, even if not like a human-shaped Stark, had body quality several times stronger than ordinary people, easily.

Even while reserving spiritual energy locally without circulating inner sea, logically, he shouldn't be stimulated by cold winds.

But if it's the evil energy formed by Y particles, it's different. Even if in very small quantities, its instant temperature and penetration are considerable.

Indeed, after Wang Qiang discovered the air contained a small amount of evil energy, many previously abnormal situations could be resolved smoothly.

Then Lin Ziming abruptly thought of something else and asked:

"Wait, I still have a question I don't quite understand.

The coldness of Qingcheng Mountain can be felt near the entrance, meaning that area should also contain a small amount of Y particles, right?

But why is it that only near the cliff is there a small amount of spiritual energy, and only here does the total nitrogen amount get frighteningly low?"

Hearing this, Li Bai'an lifted his head to meet Wang Qiang's gaze.

Then, the faces of these two widely acknowledged individuals revealed a scholarly smile, with Li Bai'an explaining:

"The reason is very simple, these situations indicate one thing:

This is the site of nitrogen-fixing condensation reaction!

Perhaps infected by this scholarly smile, Lin Ziming seemed to receive a scientific mindset card, and once again keenly discovered a problem:

"That doesn't make sense, even if near the cliff is the reaction site, the total nitrogen amount should always remain constant, meaning the reaction should be replenished by outside...

Wait, are you saying... the reaction doesn't occur continuously?"

Li Bai'an nodded heavily, gesturing:

"There's a high probability that's the case.

This place is like a warehouse; at a fixed time every day, someone fetches the goods, and the remaining time is used for 'stock refilling'.

That means yesterday, when you first arrived at the site, the total nitrogen amount must be significantly lower than now.

As for the 'fetching' time, it's most likely in..."

Li Bai'an elongated the sound.

This time, all three spoke in unison:

"Dawn!"

After solving a crucial issue, everyone's mood involuntarily lightened.

Perhaps due to the relaxation of emotions, Wang Qiang suddenly thought of something:

"Wait, dawn, dawn, Qingcheng, Qingcheng.....

could Qingcheng Mountain originally be named Qingchen Mountain?"

Lin Ziming chuckled and said:

"You should ask Zhang Daoling and Emperor Xizong of Tang about that; perhaps that really is the case."

Then he straightened up and said:

"Both of you, the mystery of nitrogen content and Qingcheng Mountain's environment can be unraveled at any time, but the overall situation still has no room for complacency.

We still have many questions left unanswered.

For example, the source of spiritual energy and the area of condensation microorganisms, we still don't know where they are.

Furthermore, why are the Y particles and spiritual energy here in such limited quantities?

Are they naturally scarce, or blocked by something?

Also, earlier I heard Daoist Huang mention in the scripture room of the Taoist temple about a rumor, claiming there's an earth palace set by Zhang Daoling beneath Qingcheng Mountain suppressing the Netherworld.

As it turns out.

The Netherworld likely refers to Y particles, i.e. evil energy.

Then the existence possibility of this earth palace is personally considered very high.

Therefore, the crucial point right now is....

Dawn!

We don't know the exact time 'dawn' refers to, but overall, it's this period.

Estimate three to four hours, roughly.

So everyone hurry up and prepare.

If there's no accident, we might need to request further aid from the organization, prepare to...

excavate the cliff!"

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