Gold detectors, digging equipment, bags of lime powder and an electronic scale were carried into the backyard from the car.

After that, Jiang Bo was not in a hurry to find gold immediately, because the gurgling stomach was urging him to hurry up and replenish his body's energy.

I went out for a meal and then packed some home with me so that I could eat it again at night when I was hungry.

Close the front door and lock it to make sure no one suddenly breaks in.

Jiang Bo took off his shirt, revealing his vigorous and powerful muscles, and went to the backyard to start tinkering with the gold detector.

It's called the Bounty Hunter Vanguard Probe, and it was bought by Jiang Bo at a company in Yangcheng that specializes in metal detection.

Among the civilian detectors, this detector has a large power, which belongs to the top batch, and it cost Jiang Bo more than 100,000 yuan.

This gold detector uses sound alarm and instrument display, and the detection depth has a great relationship with the area, shape and quality of the gold to be detected.

Generally speaking, if the area is larger and the quantity is larger, the corresponding depth will be deeper, and conversely, the smaller the area and the smaller the quantity, the shallower the corresponding depth.

Of course, in addition to this, it is also related to the power of the detector.

In terms of principle, it is not unusual, using a coil with alternating current passing through it to generate a rapidly changing magnetic field.

According to Maxwell's equations, this magnetic field can induce eddy currents inside metal objects, which in turn will produce a magnetic field, which in turn affects the original magnetic field and causes the detector to make a sound.

In the general direction, there are some similarities with the current wireless charging technology, as long as the detected metal is also made into a coil, wireless charging can theoretically be realized.

When Jiang Bo was in college, he played this kind of experiment, which was very simple in principle, but when he wanted to turn technology into a scientific and technological item, there was a big mountain in front of him.

After assembling the gold detector and powering it on to detect that it was running normally, Jiang Bo tore open the bag of lime powder, took a small basin and scooped half of the basin, and began to mark the soil in the backyard.

A few minutes later, the 120-square-meter backyard was divided into 60 2-square-meter areas by Jiangbo, and the areas were divided by white lime powder.

After throwing away the basin and washing his hands, Jiang Bo began to operate the gold detector, probing each area in turn.

The first time I went through the inspection, there was no result.

But Jiang Bo showed patience, and the second time he made the probe, he slowed down and carefully probed each area.

The hard work paid off, and finally at half past eight in the evening, the gold detector emitted a tiny alarm sound.

The gauge shows that the depth of the metal is 8.2 meters.

"Did you find it?" Jiang Bo was overjoyed, and hurriedly moved away from the gold detector, took a shovel and shoveled a half-meter-deep hole in the place where the alarm sounded.

Then, put the gold detector in and probe it again.

This time, the alarm sound was even clearer and louder, and Jiang Bo clenched his fists excitedly, confirming that the gold was here.

Without hesitation, he measured the distance with a tape measure, re-established a point four meters away, marked the two straight lines with lime powder, and then began to excavate in a stone ladder shape according to this line.

Although the overall workload is larger, the difficulty is correspondingly lower.

In terms of manpower, Jiang Bo only has one person, and if he drills a well from the same place, he has no experience in drilling wells, so it is not easy to get it.

If a bad collapse occurs, he will be buried directly.

And the 8.2-meter-deep well is enough for him to work just by transporting soil up and down.

He didn't want to be like Zhang Songming who had been digging wells for a month or two, and he planned to leave within a week.

If you make a stone ladder-shaped excavation channel, you can quickly send the soil out along the trapezoidal channel, skipping the climbing step, which can greatly save physical strength and time.

However, the slope of the trapezoidal passage needs to be strictly calculated, of course, this is not a difficult task for Jiang Bo, who is from a science background.

Digging, like digging a well, is boring and tasteless.

Jiang Bo didn't know what Zhang Songming felt like at the beginning, anyway, he was full of energy now.

After all, a box of gold was close at his feet, and all he needed to do was dig them out step by step, and the sense of anticipation in his heart exploded, causing him to get more and more excited the more he dig.

According to Jiang Bo's calculations, he needed to dig a hole with a width of about 1 meter and a cross-section of about 16 square meters.

At first, the excavation went smoothly because it was all yellow dirt and not rammed earth.

So it's easy to dig them loose with a shovel and hoe, and then scoop them up with a shovel and throw them to the sides.

But when Jiang Bo dug to a depth of two meters, sand and gravel appeared, and the difficulty of excavation was greatly increased.

However, as long as he doesn't encounter a big rock that he can't move or break, it's fine.

……

Day 1.

Jiang Bo dug until 2 a.m., which took nearly six hours, except for drinking water and eating halfway, he was recklessly digging and carrying the soil with buckets.

It was dug to a depth of about 1 meter, although it was not deep, but because the pit to be dug was in the shape of an inverted straight triangle, the work at the top was the largest, and the further down, the smaller the workload.

Of course, the more difficult it is.

Thanks to the transformation of the two superbody gels, Jiang Bo's body has surpassed ordinary people in terms of basic qualities such as strength, staying power, and muscle strength.

But five or six hours of high-intensity work still made Jiang Bo feel tired.

If you were to change to an ordinary worker and work with his efficiency, he would be tired for two hours at most.

The next day.

At half past eight in the morning, Jiang Bo went out for breakfast, bought lunch, and continued to lock himself up and dig.

After Jiang Bo's simple calculations, the pit he was going to dig was about 16-20 cubic meters of soil and gravel.

This workload is large, but it is actually not large, that is, the volume of the cargo box of a double-axle car.

Of course, considering the density of soil and gravel, the quality of these sand and gravel is about 30-50 tons.

If he was working on flat ground, Jiang Bo felt that he would be able to shovel so much dirt and gravel in two days at most.

Unfortunately, this is an underground operation, which is different in nature and has a large difference in difficulty.

In the first three days, Jiang Bo's progress was very fast, and he recklessly dug more than four meters deep.

But on the fourth day, when he woke up early in the morning, he felt that his body was tired, and his muscle cells seemed to stop working, which made him feel uncomfortable and weak.

After checking on the Internet, he learned that this was not because his body was not strong enough, but because he did not supplement enough sugar and protein under high-intensity work, resulting in muscles not getting enough energy, and injuries and strikes.

No matter how much he likes gold, Jiang Bo doesn't dare to mess around regardless of his body.

On the fifth and sixth days, he reduced his workload and at the same time took in a lot of high-calorie food and protein.

……