A nation's industrial development begins with junior engineers.

Chapter 785 Wow! Gold!

The convoy started moving, with Chief of Staff Cheng and Liu Shicai leading the way in a small jeep. Next came Jiang Xia in an armored vehicle.

The car rumbled on, and Engineer Chen was still clutching his stomach. However, as he held the 'Red Dragon's Eye' that Jiang Xia handed him, his gaze towards Jiang Xia became somewhat serious.

"Xiao Jiang? I know you can cause so much trouble, your calculation ability must be quite good, but... but even with the 'Red Dragon's Eye,' I'm afraid..."

Yes, this is where the rigor of the older generation of researchers is shown. Engineer Chen suspects that the kid is exaggerating!

Hey, he actually guessed half right. Let's take an example, and you'll understand why Engineer Chen thought that way.

First of all, don't forget the full name of Jiangxia's ground-penetrating radar. It's actually called "A Preliminary Study on a Fusion Detection Technology Based on Proton Precession Magnetism Measurement and Pulse Induction Radar".

Secondly, thanks to this kid's modifications, this radar actually emits radio frequency electromagnetic waves, with a frequency range typically between 8 and 300 MHz, corresponding to wavelengths only down to the decimeter level.

The wave speed in different media follows the formula v = c / √(e_r m_r), where c is the speed of light, e_r is the relative permittivity, and m_r is the relative permeability (usually ≈1).

When electromagnetic waves encounter objects with different dielectric constants, they produce reflected waves. Radar receives these reflected waves and measures their two-way travel time (t) and amplitude (A). Depth (d) can be estimated using the formula d = (v * t) / 2.

Jiang Xia needs to analyze these time-varying amplitude intensity sequences in real time, and combine them with the vehicle's movement position, rapidly performing calculations in his mind using algorithms such as Kirchhoff migration. He also needs to mentally piece together these one-dimensional "digital sequences" into two-dimensional or even three-dimensional cross-sectional diagrams of the underground structure, while simultaneously inferring the material composition based on dielectric constant anomalies, thereby distinguishing between natural strata and possible man-made cavities.

This requires not only extremely strong mental arithmetic skills, but also excellent spatial imagination.

Is this something the human brain can calculate?

While tidying up the cables coming out of the radar control panel, Jiang Xia turned around and grinned, "Don't believe me? Test me!"

"Okay! 't=0.32s', er=8.5, calculate the actual terrain depth!"

"16.4 meters!"

!

Engineer Chen buried himself in pressing the "Red Dragon's Eye" button.

“ h=(cxt)/(2x√er)。c 是光速（3x10^8m/s）。当 t=0.32s、er=8.5 时，h=(3e8x0.32)/(2x√8.5)≈1.68x10^6 米？不对，得换算单位，实际 t 是微秒级，应该换算成t=320ms（0.00032s），算出来 h≈(3e8x0.00032)/(2x2.92)≈16.4 米！”

"That's right! That's right! As expected of Engineer Jiang..."

Three minutes later, Engineer Chen, having completed the verification, looked up and began to admire Jiang Xia.

Jiang Xia chuckled to himself.

He's not a super brain like Teacher Yu or Jin Zhen, but he has a scanner! This kid built a one-to-one down-penetration radar in the scanning space, simulating numerical calculations with actual data—it's a piece of cake for him.

The system's malfunctioning, so watch me show off my scanner skills! Of course, there's a price to pay. Didn't you see this kid starting to take those power pills again?

Hey, if it works, what would happen if I built a Galaxy III and put it in my head? Before entering rationality, the ahoge had another suicidal thought.

"By the way, Engineer Chen, could you please have Dr. Meng Chao give him a thorough check-up? It's not good for him to keep clutching his stomach like that!" Jiang Xia said, looking at Engineer Chen, whose face had turned pale again.

"Hey! It's just a minor problem..."

Jiang Xia interrupted Chen Gong before he could finish speaking, saying, "If you let him check it out, I can upgrade your radar son again, right? Maybe it can do even more. But, you know I'm busy, so this upgrade can only be done by you personally. You can't do it without good health..."

Just as Jiang Xia began to use his eloquence to comfort Engineer Chen, he was unaware that in the lead jeep, Chief Guard Cheng was also discussing him with Investigator Yan.

"That young engineer Jiang, isn't he from Beijing? How come he's never even seen a kang (heated brick bed) before..."

Detective Yan chuckled and pulled out a pack of cigarettes: "Ha, who told you to become the logistics minister? You missed out on so many things... Don't doubt it, we've investigated this kid's background countless times."

“It’s normal that they haven’t seen it before. The entire Jiangjia Village’s ancestral home is from elsewhere, and no one in the village has ever built a kang (a traditional heated brick bed).

"Eh! Really? That makes sense..."

"Sir! We're almost at the fork in the road I mentioned..." Liu Shicai's report interrupted their conversation.

"Okay! Stay alert!"

……

Soon, the convoy passed the fork in the road that Liu Shicai had pointed out. "Time to get to work!"

Relying on his almost cheat-like abilities and the precise geological interpretations of the geologist Li Siguang, Jiang Xia continuously guided the way:

"15 degrees to the left! A high water content signal appears 1.5 meters below the surface 40 meters ahead, possibly a swamp. Detour!"

"Right ahead! There is a continuous low e_r anomaly zone about 3 meters underground. It is relatively dry and may be a layer of hard soil or shallow bedrock. You can try to pass through!"

"Attention! A large-scale low-resistivity anomaly has been detected in the lateral scan! Wait... this signal... has strong metallic reflection characteristics! Professor Li! Look, there really seems to be something down there! The signal is very scattered, clustered here and there, like scattered rich ore veins!"

The armored vehicle slowly drove into a more remote and narrow ravine, following the safe route painstakingly drawn by Jiangxia using data.

The elderly geologist looked at the abnormal signal distribution pattern drawn on the "surveyor dragon" paper strip machine and became slightly excited: "That's right! It's the typical discrete distribution characteristic of placer gold deposits! The veins are discontinuous, distributed in a chicken coop-like pattern! There really is gold here!"

"Looks like we've arrived at our destination!"

Jiang Xia breathed a sigh of relief. Luckily, they had arrived. He had almost secretly gnawed away all the remaining white sugar in his bag. If this continued, Jiang Xia might have had to ask Old Wang to run into the woods and find some ginseng roots for him before he could continue.

The message was immediately relayed to Chief of the Guards, Cheng, in the lead vehicle. Chief of the Guards was just about to order the convoy to stop so he could lead an elite squad ahead to scout ahead…

suddenly!

"Screech! Crack! Boom!"

The right side of the wheeled armored vehicle driven by Lao Wang suddenly sank! The two tires on the front right and the middle right sank into the ground instantly, crushing the fragile surface covered by thick, rotting leaves. The whole vehicle emitted a tooth-grinding roar of twisting metal and spinning tires!

The car body tilted violently to the right!

"Holy crap! Bro! Didn't your radar 'see' that there's hollow space under the ground on the right?!" Old Wang broke out in a cold sweat in the driver's seat and shouted instinctively, but his hands didn't slow down at all!

Thanks to the armored vehicle's powerful engine, it managed to pull the right tire out of the mud pit, and the vehicle suddenly lurched to the left, crashing onto a slightly higher, solid embankment by the roadside! The vehicle temporarily regained its balance amidst violent bumps and swaying.

The people in the car, except for Lao Wang, did not make a sound, but instead looked at the signal recording strip in the old geologist's hand.

"Gold...gold!"

"No, no..."

Money and silk are tempting, and just as Old Wang was craning his neck to look at that inconspicuous little note.

Suddenly, a series of loud crashes and bangs were heard! The seemingly ordinary bushes and loose soil under the wheels of the armored vehicle collapsed instantly, tearing down a low shack cleverly disguised by branches and mud on the roadside!

Amidst the flying dust, four or five people, dressed in rags, covered in coal dust, and still in shock, tumbled and crawled out of the shack!

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