The melodious sound of bells rang in the sky above the stretch of the bell tower of St. Paradise High School, and students in groups and threes continued to gather into the interior of the school, and every road was paved with crowds of people, only the road approaching the north playground, which was covered by dozens of metal plates, and the road was cut off and impassable.

**Strong, Chen Fei and the two walked in front of the metal plate, pushed open a door and walked in, there were already several armed policemen surrounding them, the two showed their documents, walked through the metal plates, looked down from the mound above the metal plate, the raised building rising on the ground has been blocked by several curtains, and several people in work clothes are burying their heads on the ground.

Gan Yi, who was standing on another high ground, beckoned to ** Qiang and Chen Fei, and the two of them walked down the stairs, passed through the tomb that bulged out of the ground, came to Gan Yi, and followed into the tent behind him.

"Oh, Mr. Gan, you still hold on so tightly this time!" Strong grin.

"You do toss a lot of demon moths, and you have made such a strange ancient tomb for me." Gan Yi nodded his head.

"What's so strange about this ancient tomb, isn't it the tomb of some king?" Chen Fei asked puzzled.

"It's not that simple." Gan Yi shook his head slightly.

"If we look at this structure, there should be some other building hidden under the ancient tomb!" Gan Yi pointed to the floor plan on the wall.

As indicated, the underside of the protruding tomb is oval in the shape of a large cavitation on the floor plan.

"We are now concentrating our manpower and material resources to find out what the space beneath this ancient tomb is!" Gan Yi's gaze was resolute.

"This tofu has become the price of meat." ** Forced out his tongue.

Occasionally, I saw a few foreigners walking around with a bunch of instruments.

**Strong, Chen Fei and the others looked at it for a while, and they didn't know the essentials. Just as I was about to leave.

The surrounding staff exclaimed. All of a sudden, there was a lot of disturbance.

The two followed Gan Yi out of the tent, only to see dazzling light on several excavation surfaces in the bare part of the ground at the bottom of the construction.

Bright red and shining.

Gan Yi ordered everyone to speed up the excavation progress through the walkie-talkie, and after a while, the ground of the comprehensive excavation layer was cleared.

Pebbles.

The dense pebbles are bright red and dazzling, densely connected together, in a north-south direction, staggered in a spiral on the flat ground, elongated into a number of rays, in the shape of solar radiation.

"This whole thing comes out and says the sun to the sun!" Strong voice.

Gan Yi didn't answer, bowed his head and was silent.

The staff under his hands are busy with their feet not touching the ground.

The photograph of the photo, the mapping of the mapping.

Crowded with people, lively and extraordinary.

After Gan Yi ordered to finish everything, he continued to level the land and clear the next exploration layer.

This is the mouth.

**Qiang and Chen Fei pressed a strong reluctance, and quickly rushed to the examination room, and after a casual scribble, they handed in the papers, and ran to the excavation site to continue to watch the excitement.

The crowd paddled and drove the boat.

Under the busy white coats stuffed on the exploration floor, the sun composed of pebbles has been decomposed, and the bright red and translucent pebbles are densely pressed into dozens of huge plastic cabinets.

The busy white coat could only see the one-third of an acre in front of him, and he couldn't judge the situation from the perspective of the overall situation.

So Gan Yi, who was standing on a high place, ordered the field to be cleared.

After the crowd has subsided.

The exploration below the sun map is unobstructed.

A whole minute.

There was not a trace of sound at the scene.

Until ** forcibly opened his mouth, "Crooked day, this...... This...... This! ”

The surface of the brush is flowing with a strange white, which is the color of the ice that is compacted after the water condenses into ice in winter.

The entire ice surface reflected the golden yellow of the faint sunlight, but it was mixed with an indiscernible purple and red, so that the whole scene was entangled in the afterglow, and the beams of light of ten colors were entwined.

According to common sense, the scene at this moment is more like the earth's aurora produced by the high-energy charged particle flow from the earth's magnetosphere and the sun, which is excited by molecules or atoms in the upper atmosphere, which is in the form of bands, arcs, curtains, and radials, with irregular and continuous changes.

Everyone looked at the unknown beneath the surface of the ice, as if the initiator of these rays of light was hidden below.

But it is deep and dark, and chaos is not noticed.

For a moment, there was silence, and I forgot about things.

** Strong but it can be seen clearly and abnormally, and the familiar fierce gaze continues to be fixed on himself.

In this world, only oneself is the convergence point of all attention.

The next trivial matters continue to be staged like a marquee.

Take pictures, map, record.

In the night battle, the frozen layer must be quickly cleared.

**Qiang and Chen Fei will never keep up with this stupid overnight, and the two decided to go home and go to bed early.

When leaving, ** Qiang saw that fierce and frozen gaze and kept looking at him until the end of his sight.

The next morning's exam, as usual, I handed in my papers early.

**Qiang Chen Fei and the two jumped to the excavation site.

Look at the world in front of you, still busy and turning.

Several foreigners carried different instruments and equipment on their shoulders, climbed up and down, and at several commanding heights at the scene, two people in a row, three people in a row tinkering with something.

"Mr. Gan, why did these international friends come to my Great Sage Heaven?" Strong continues to giggle.

Gan Yi pushed his glasses and opened his mouth, "Under my command, nuclear magnetic resonance bathymetry is being carried out on the underground space!" ”

"NMR sounding? Isn't an MRI used to check for rheumatoid arthritis? "** strong puzzled.

Gan Yi smiled disdainfully, and opened his mouth with the expression of I gave you popular science:

"The NMR bathymetry method is currently the only new geophysical method for direct exploration of groundwater, which is novel, economical and fast.

It provides a new means for the quantification of hydrogeology and engineering geology, and can directly determine whether there is groundwater activity at the target area. ”

"This method was used for the first time in the non-destructive detection study of the Mausoleum of Qin Shi Huang.

To this end, geophysical detection methods such as high-precision magnetic method, high-precision gravity, high-density electrical method, shallow seismic exploration, high-resolution transient electromagnetic method, ground penetrating radar and ground nuclear magnetic resonance bathymetry have been invested.

NMR bathymetry

The nuclear magnetic resonance bathymetry (MRS) method is currently the only new method for direct exploration of groundwater.

Magnetic resonance bathymetry is currently the only geophysical method that directly probes groundwater.

The depth, thickness, water cut, and average porosity of the aquifer can be determined without drilling.

Moreover, the cost of completing a NMR bathymetry point is only 1/10 of the cost of a hydrogeological exploration borehole, so this method has been widely used in groundwater detection and water resources survey.

However, due to the high receiving sensitivity of the magnetic resonance water detector, the received MRS signal (nanovolt level) is very weak, because it is very easy to be interfered by electromagnetic noise, mainly including random natural noise in the natural environment, and the power line noise (50HZ and its harmonics) is more serious.

The existence of these interferences directly affects the extraction of effective signals from MRS, which in turn affects the accuracy of subsequent inversion interpretation.

Therefore, the purpose of NMR research is to study the characteristics of random natural noise, power line noise autocorrelation and interconnection shutdown function. The filter design is carried out based on the means of correlation detection, and the advantages of LabVIEW and MATLAB programming software are combined to realize the separation of MRS signal and noise. ”

"I just know that HOT, a Korean group, is indeed a combination of brain-dead and noise!" Chen Fei interjected.

Gan Yi obviously didn't know about this combination, paused slightly, and continued to speak:

"The rationale of the MRS approach.

The MRS method uses MUMIS to measure the occurrence state of the aquifer from shallow to deep by changing the excitation pulse distance q (q-JT, where J and T are the amplitude and duration of the excitation current pulse) from small to large, and then obtain information about whether there is groundwater activity in the detected target.

The MRS method takes advantage of the difference in the relaxation characteristics of protons (protons) in water, and uses MRS observations on the ground to study the change law of the NMR signal generated by the water quality protons in the target body, and then detect the groundwater.

Nuclear magnetic resonance (NMR) is a physical phenomenon based on the characteristics of atomic nuclei, which refers to the selective absorption of electromagnetic energy by substances with paramagnetism of nucleons.

Under the action of a stable geomagnetic field, the hydrogen nucleus spirals around the geomagnetic direction like a gyroscope, and its rotation frequency (Lamolar circle frequency) is related to the strength of the geomagnetic field and the magnetic spin ratio of the hydrogen nucleus.

Excitation of magnetic fields

Under the action of geomagnetism, the hydrogen nucleus is at a certain energy level, and if the protons in the groundwater are excited by the alternating magnetic field B with Lamolar frequency, the transition between the nuclear energy of the atoms will occur, that is, nuclear magnetic resonance will be generated.

In the MRS method, an alternating current pulse with a frequency of Lamolar frequency is usually fed into the coil (transmit/receive coil) laid on the ground, and the envelope of the alternating current is rectangular.

Under the excitation of the alternating magnetic field formed by the alternating current in the ground, the hydrogen nucleus in the groundwater forms a macroscopic magnetic moment, which produces a precession motion in the geomagnetic field, and its precession frequency is unique to the hydrogen nucleus.

The strength or decay of the NMR signal is directly related to the number of protons in the water, that is, the amplitude of the NMR signal is proportional to the content of free water in the detected space, so it constitutes a direct water finding technology and forms a terrestrial NMR water finding method. ”

"No, what are you looking for water, you have become a water company again?" Chen Fei was puzzled

"It's not about looking for water, it's about understanding the condition of the underlying space to see if there is any groundwater overflow before further excavation, so as to decide how to excavate."

"So, why are foreigners operating these instruments?" Strong or don't understand.

"The University of Berlin in Germany is No. 1 in this field. Only they have fun.

In terms of the development of MRS instruments, the French company IRIS is the only commercial instrument manufacturer, and the instruments used in countries around the world are the company's products. ”

"Crooked day, a family's business?" Strong pouting.

"Of course, although there are still Russia using their own NMR chromatography water finder, it is HYDR0SC0PE3B."

"You continue!"

"However, you also know that Russian things are the same as domestic goods, compared with cutting-edge goods, the instruments are stupid and coarse, the exploration depth is only 100M, and the hydrogeological information is poor and backward."

"Therefore, it is inevitable that the users of the equipment will have to be operated by foreign professionals."

"I said such a awesome ancient tomb, with a bunch of crooked nuts tossing."

"Although in recent years, our industry has accumulated experience and talents for the localization of MSR instruments and water prospecting industry, and the technical reserve is ......."

"Just say but!"

"But, not yet!"

"It's a trivial matter, it's all right in our generation!" Strong confidence.

Gan Yi had an expression that was not wrong to your generation, but he would never finish it in your hands, and began to order the probe.

"Mr. Gan, how did you detect it?" Chen Fei asked.

Gan Yi comes with a commentary function.

"The instrument used in this work is NUMIS developed by the French company IRIS, and the total length of the loop is 330M.

In this MRS method detection work, a total of 5 MRS bathymetry points were arranged. They are numbered QH11 to QH15.

1-6 planing surfaces of the archaeological area of the excavation site were crossed, and four of the bathymetric points were located on the sealed mound, that is, the QH11 point coil was located in the center of the top of the sealed mound in the underground space (the altitude of the coil plane).

QH12 IS LOCATED 75M WEST OF THE CENTER OF THE MAUSOLEUM SEALING MOUND.

QH13 is located 75m south of the center of the top of the sealed mound.

QH14 is located 75m east of the center of the sealed mound roof. The coil types of the above 4 bathymetric points are all Dafang (75MX75M).

The qh15 is located 70M east of the underground space and is in the shape of a round shape.

The inclination angle of the geomagnetic field in this work area is 52, and the geomagnetic field strength is B-51978NT.

The excitation pulse frequency selected by the system is: factory (HZ)-0.04258B. (NT)2213HZ。

16 pulse moments were selected for measurement, the recording length was 240MS, the superposition times of each pulse moment measurement were 256 times, the frequency difference between the signal frequency received by each pulse moment and the excitation pulse frequency △ field was ≤ 1HZ, and the amplification factor of each bathymetry point was greater than 10000.

The above information indicates:

The technical parameters of the MRS method are reasonable, and the observation quality is reliable, which provides a reliable basis for the inversion and interpretation of the data. ”

"Yes, yes, the team led by Mr. Gan is invincible and dominates the world!" Chen Fei gave a thumbs up.

** Qiang watched these crooked nuts busy in the corners and corners, and its work process, at first glance, is very similar to planting mines, and then continue to operate, and it is a set of geological exploration processes.

The crooked nuts were writing and painting with solemn expressions, and their faces were shining because they were fulfilling a noble mission.

After tossing and turning like this until noon, the crooked nuts did not eat, and gathered in all directions.

gathered all the information icons in his hand in front of Gan Yi.

Chen Fei, ** Qiang took a closer look and saw that all the information was incomprehensible text.

"It should be in French." Strong thinks so.

"You don't even recognize what English looks like, and you can also speak French!" Chen Fei disagreed.

Gan Yi didn't answer questions, and exchanged the detection results with the white coats under his hands with a solemn expression.

"The inversion results of MRS method data are comprehensively analyzed, and the following results are obtained:

"There are two weak aquifers and one waterless section under the sealed mound as some quantitative interpretation results provided by the inversion interpretation of the MRS method data, and the water content histogram of each bathymetric point shows that the first weak aquifer under the sealed mound is reflected at all three MRS measurement points.

The qh11 NMR bathymetry point is at a depth of 32-42M underground, the qh12 and qh14 bathymetry points are at a depth of 24-32M underground, both have a weak water layer, the thickness of the aquifer is about 10M, and the second weak water layer is at 051-55.5.

The comprehensive analysis of the characteristics of NMR signals shows that the water cut characteristics under the sealed mound are not very obvious, and the water content per unit volume of the weak aquifer is only 2~5

ABOUT 42-81M BELOW THE SURFACE OF THE SEALED MOUND IS A WATERLESS DISPLAY SECTION. ”

"It can basically be judged that there is no groundwater seepage in the underground space!" The white coat confirmed.

Gan Yi shook his head with a piece of information.

"The interpretation results of the qh15 measurement point are different from the interpretation results of the four MRS measurement points on the sealed mound, that is, in the same underground section, that is, between 42 and 81 m, the interpretation of the qh15 measurement point is a water-bearing area."

The white coats stared at each other wide-eyed. Cautiously asked, "Could it be that the high-density resistivity method is high and abnormal?" ”

"They have determined by the two-dimensional automatic inversion resistivity map of the high-density resistivity method on the profile, between the height of 42-81M in the ground depth, located under the sealing mound at the measurement point QH15 in the middle, there is a local closed high-resistance anomaly." Gan Yi made up his mind.

This was followed by an order: "Now determine what caused the anomaly." ”

Chen Fei and ** Qiang watched the white coats stand still and did not move, but they didn't know how to determine the cause of the abnormality.

At this moment, the black-clothed team members who had been staying in the van lifted down a big-eyed drilling robot that was no more than 20cm tall and no more than 30cm long from the car in groups of four.

He quickly turned on the camera on the robot, and finished adjusting it with the terminal in front of Gan Yi.

The camera is on the front socket of the large eye, and the image is unusually clear.

**Qiang and Chen Fei saw the robot for the first time, and for a while, they completely forgot the reality of being hungry, and happily wanted to see the excitement to the end.

Seeing that everything was ready, Gan Yi ordered the drilling robot to enter the closed high-resistance anomaly area.

The process of burrowing is a little boring, like a mole burrowing, wriggling in the dark.

No anomalies occurred.

Gan Yi was an agitated spirit, shouting to brake.

The team member who controls the robot stops the robot in a decisive way.

"It should have reached the edge of the underground space, and if you go any further, it will fall." Gan Yi paced anxiously.

He then ordered to "turn on the camera lights and shoot the underground space from a bird's-eye perspective." ”

The robot faithfully fulfilled its mission, sending back color images of the underground space in its original form.

An empty and dust-free semi-oval space, in the middle of which is an earthy kang-like protrusion, on which is stacked a set of old clothes of coarse linen clothes.

Under the earthen kang, a pair of straw sandal-like objects were silent.

The crowd shouted.

This is a mound of clothes!

The robot irradiated for a while, but there was nothing else,

Ordered to be recalled.

Everyone's eyes were fixed on the monitor, and no one noticed the slight tremor of the ground.

As a result, the picture of the robot returning to the sea turned white, and then lost contact.

Just as everyone looked around.

The smoke was vast and the explosion exploded.

The sky swept through the shock wave, enveloping everyone in the splattered dirt.

All of a sudden, the sun was shading, and the mud and sand were all over the body.

Figures mingled in the dim sand and mud.

The sound of coughing and panicked shouts converged at this moment and the heavens and the earth changed color.

The crowd rushed out of the mud and sand encirclement, looked around again, and soon found that the camp of Crooked Nuts was the center of the explosion.

The severed limbs were submerged in the mud and sand, like destroyed sand sculptures after the tide of the sea.

In the center, a hillock-like bulge with sparse soil suddenly appeared, seemingly trembling slightly.

**Qiang and Chen Fei took a long time to clean up the mud and sand all over their bodies.

found that in all directions, there were already crowds of people watching the excitement in the dark.

Presumably, the explosion just now has resounded through the heavens and the earth.

I don't know why, ** Qiang saw Xiao Tongjin, the owner of Yongdeng House, who was watching the excitement in the first row.

Don't think about it.

The hill suddenly erupted violently.

In the yellow sand in the sky, a figure like a fish slashed out of the air.

Wrapped in a whistling momentum, he appeared in front of everyone.

It's a dragon!

Everyone's first reaction when they saw this figure!

The dragon has a phoenix tail and a length of more than several feet.

Crocodile mouth with sharp teeth.

The two objects protruding from the head resemble two sharp bone spurs.

The scales of the whole body like a bone helmet were delicate and tight with the body of Long You Jiutian.

The crocodile eyes of the two car ** are cold and solemn.

Swam around the ground that had broken through the ground, and then burrowed back into the earth, leaving only the head out.

Coldly glancing at everything in front of him.

The onlookers were silent, and they didn't dare to speak.

Gan Yi picked up the radio walkie-talkie with a blank face and shouted loudly, "Hurry up and report to the seventh district, there is a third type of contact situation!" There is a third type of contact! ”

Although the alarms were silent, groups of black SWAT transport vehicles whizzed by, stirring up tense air in the streets.

On the periphery of the excavation site, the police and teachers are evacuating the crowded students, who are piling up on the road outside the north playground, stretching their necks to watch the movement inside.

I don't know that there are so many idlers from Lanzhou City, I heard that there is a lively look, and it seems that the entire North Playground is piled up in an instant as if they don't want money, and the water is impassable and boiling.

The whole scene was unprecedented, chaotic.

More than a dozen armed police vehicles arrived, and armed police soldiers with shields and sticks lined up to isolate the crowd from the main road, leaving a thoroughfare.

The onlookers were also evacuated from the campus one after another, but these adults who watched the excitement stretched their necks and refused to disperse, and squeezed fiercely with the line built by the armed police.

Several unmarked Coasters stopped at the school gate, and a team dressed in civilian clothes with a unique temperament drove into the north playground. At the head is a figure of short stature and a weak face, like a young teacher.

When Gan Yi saw the team coming, he greeted him with a disgraced face. Greeted the young man at the head, "Zhang Shouzao, don't come unharmed." ”

Zhang Shouzuo was kind and kind-eyed, "It's easy to say, it's easy to say, Mr. Gan has worked hard." Or call me by my name, so many people, pay attention to the impact! ”

"Comrade Zhang Jianheng, where is the third type of contact." In the direction of Gan Yi's finger, the head of a creature like a dragon and not a dragon was half-exposed in the soft mound, the whites of his eyes were the whites of his eyes, and the eyes were the cold gaze of his eyes.

"What kind of creature is this?" Zhang Jianheng asked.

"When it broke the ground, it caused an explosion, and I didn't see it clearly, it looked like a drought." Gan Yi took off his glasses and wiped them.

"There are so many onlookers here that we can't do our job." Zhang Jianheng said after looking around.

Gan Yi looked embarrassed, "You have also seen the current situation, our nation is really saving 12,000 words here for watching the excitement." ”

Zhang Jianheng smiled with a fairy wind and ordered his subordinates, "Prepare for psychic!" ”

The men in the line carried a few boxes and pounded them inside.

"Does this seem like the whole thing?" ** Forcefully pull the dirt on the head and say to Chen Fei.

Suddenly, the soil at the dragon's head began to tremble violently, and the onlookers shouted a tsunami, and everyone was stunned to watch the soil rise into the air like a river and a sea.

The blue-brown scales are stacked like tiles, and the abdomen is bright red for a glimpse.

"Look, he's got legs!" The crowd screamed hysterically.

I saw a pair of adult human thighs, which were placed on the tail of the dragon in a coordinated manner. The thighs are white and delicate, and through the soaking of the loess in fine yellow, you can see that the thighs are thick and strong.

"Look. And arms! ”

A pair of adult human arms are also placed at the node below the head. Delicate and slender hands are pressed against the dirt. It's hard to check.

"This is a dragon spirit, almost an adult." The crowd is defined.

The head of the big dragon raised high, looked at everyone condescendingly, and after shaking from side to side, his eyes were fixed on ** Qiang, his tail flicked, and the whole body was like an arrow off the string, swish, and it was taken from the soil layer overnight, and it was in front of ** Qiang in the blink of an eye. Eye-to-eye, nose-to-nose close to eye gaze.

The crowd of onlookers exclaimed again.

Zhang Jianheng's subordinates began to rummage through the cabinets, and everyone took out the ancient swords from them, and the soldiers were murderous.

Zhang Jianheng is as steady as Mount Tai, watching coldly.

The big dragon rotated 180 degrees, turned its head to Zhang Jianheng and the others, the dragon's mouth was wide open, but instead of spitting out the letter, it made a human voice.

"The landing point of the Lord is here, you can't wait to be presumptuous!"

The audience was silent, silent.

The sound of the rumbling motor came from far and near, and the earth shook the earth and the mountains.

Everyone regained their senses and looked up, only to see several military Mi-8 helicopters hovering in the sky.

The huge air flow driven by the propeller disturbed the entire North Playground with flying sand and rocks, and smoke and dust billowed out.

Several helicopters quickly landed on the ground. A group of men in civilian clothes got out of the helicopter.

At the head was a dignified old man, who took the lead and shouted, "Who is in charge here?" as he walked.

Gan Yi greeted him: "Here I and the comrades of the relevant departments are responsible." After speaking, he handed over a work card.

The old man took a look at it, and opened his mouth in a calm tone, "I am ********, and the central government has sent an urgent telegram, so let's implement it." With that, he handed over a document.

Gan Yi took a look, and the text below the red head read, "Immediately backfill, don't dig deep!" ”

Gan Yi was stunned on the spot.

"This is an order from the central government, execute it immediately!" The tone is resolute and unquestionable.

"Yes." Gan Yi took the document and showed it to Zhang Jianheng.

"What about this creature?" Gan Yi looked at the big dragon who was several feet long, and was worried.

Before Zhang Jianheng could speak.

The big dragon opened his mouth first, "I will leave, don't bother!" ”

Gan Yi looked back at Zhang Jianheng, who had a flat expression and did not say anything.

Xiao Tongjin, who was at the outermost end of the crowd, ran to the rostrum of the north playground in three steps and two steps, stood under the huge horn speaker, cut off the wires of the horn, threw it high, and threw it on the mast of the national flag.

Dalong took one last look at ** Qiang, and there was infinite meaning in his eyes. Shook the dragon's body, from beginning to end, brushing lalala, like a giant ship setting sail.

The dragon's head is high, and it sets sail.

There was a muffled roar of thunder in the sky, and the sky and the earth changed color, and it was like entering the eternal night.

The dragon was puzzled in the air and stopped flying. Look back.

"Crackle!"

I only heard a thunder explosion on the ground, and the fateful heavenly thunder harnessed the lightning, and slashed straight into the spire of the mast of the national flag, I don't know what the principle is, and the refraction phenomenon occurred.

With the spire of the national flag mast as the reflection point, the blue and black are alternate, and the five thunderbolts of the sky are as fast as a whirlwind, and they splash into the body of the dragon in the sky.

Like a flickering starlight in the darkness, dragging the tail of a long meteorite to the ground, the dragon was silent, intertwined with lifeless withering, and smashed to the ground without any stop.

After the roaring smoke and dust.

The charcoal burns the outside and the inside is tender, and the remnants of the dragon-like burning of charcoal appear in front of a community of human witnesses who are holding their breath.

In a few seconds, the charcoal that was fully burned burned for the second time, and under the beating flames, all life was gone.

**Strong only feel that there are fine, golden particles visible in front of the eyes flashed.

It's all like a floating object in the burning body of a dragon. Didn't care

But he suddenly felt a numb nose and wanted to sneeze, but he didn't succeed, and pressed this air flow down to the dantian.

Suddenly, my heart was hot, and my limbs were infinitely free.

His gaze wandered for a few seconds.

Pulled Chen Fei and left the North Playground.

——————————————————————————————————————————

End of Season 3

PS: There is a welfare article, but it hasn't been written yet! (To be continued.) )