But it's not easy to make a hole, what if the hole goes down and misses?

The most important thing is that he has no manpower to waste, and when the house is built, Su Yang is ready to train his troops and hurry up to fight the Xiyi people. At the same time, from now on, it is time to prepare for the winter, which is inseparable from labor.

Also, he wanted to open the bazaar as soon as possible, how could he do it without salt, so the salt mine must be mined, but the mining time must be shortened.

He used tree branches to form a triangle, the longest representing the oblique cave, this one has to be straight, it is better not to turn, the structure of the cave will be more stable, and it will be less difficult to mine.

The problem is that the height cannot be determined now, so it is impossible to determine the location and slope of the hole. He also had to memorize some mathematical formulas and review them before he could use scientific calculations.

It was early in the morning, and he chose the well with the least amount of water, and prepared to use the method of tomb robbers to identify the location of the rock layer, and when he thought of tomb robbing, he thought of the Luoyang shovel, which is an upright shovel with an arc, but not a semicircle.

When the Luoyang shovel is driven into the ground, it will keep adding knots and continue to hit down, and when it can't be hit, it proves that it has hit the stone slab, so as to determine the depth of the tomb. At the same time, through the soil in the shovel, you can identify the following situation and prepare in advance.

He is not robbing the tomb, he wants to lengthen the bamboo or wooden stick that is driven into the bottom of the well, which is equivalent to adding knots, and when he can't move, it is the location of the rock layer, if he can chisel through it at one time to get the brine, it is naturally better, the big deal is that he surrounds the well, widens the top, and turns the bottom of the well into the ground, so that the brine only comes out through small holes.

The idea is good, it is more difficult to implement, first of all, the principle of Luoyang shovel is used, it is estimated that it can be about fifteen meters underground, this depth is probably not enough, so this well has to be dug down, choose less water, but also to facilitate construction.

After this process, he reinforced the well with a square grid made of wooden sticks to prevent the well from collapsing, but at most it was more than ten meters deep.

The depth of the well, plus the depth of the wooden sticks driven into the ground, can add up to about 30 meters, and if it still does not work, he will tentatively set the depth of the salt mine at 50 meters and calculate the location of the inclined hole.

It took another two days, and the well was no deeper, estimated to be seventeen or eighteen meters, and his sticks were ready, a more resilient wood, finer than bamboo, but not a short year of growth, very tough, and had already been tried, and could be drilled into the ground.

It is equivalent to piling, especially to operate in the well, and it is also thanks to the primitive people who bear hardships and stand hard work, and they are not afraid of death, plus they have great strength, and Su Yang dares to do this when these are combined.

Of course, the safety measures still have to be done, and he has considered all aspects, so he can take the risk and give it a try. Five or six people went down into the well, so they first stuck a wooden stick at the bottom of the well and asked people to straighten the wooden stick with both hands.

Above this man, there were five other men, with their feet stretched out diagonally on the wall of the well, and the two below holding the sticks to be nailed into. And the top three are holding on to the big log that fell from above. When he shouted, Su Yang on the ground instructed the soldiers to pull up a section of the log; When it screams and falls, the log has to fall down at once.

At this time, it is necessary to rely on the cooperation of the six people in the well, not only to straighten the small wooden stick below, but also to straighten the big log that falls above.

And Su Yang controls the distance between the big logs on the ground, if the people below accidentally miss, so that the logs are crooked when they fall, and they don't tighten, at most they are bruised, and the logs can't fall to the bottom, because they are pulled from above.

Even so, the whole process was quite complicated, and it was really difficult to mine salt in the primitive period, and even with him in charge, it was extremely difficult.

"Up, down!"

After trying a few times, I gradually found the feeling, the big log rose and fell, and quickly nailed a wooden stick of more than three meters below into the bottom of the well, and then used the principle of grafting to tie the two wooden sticks together with bamboo chips, which means to lengthen.

When a stick was added, the log continued to repeat the process, up and down, and drove the second stick into the bottom of the well. Thanks to the fact that there is always water at the bottom of the well, after the wooden stick is nailed down, the water also flows down, making the soil loose, which can be successful.

There was no break in the middle, everyone in the team was here to help, and over time the third stick went into the bottom of the well, and then the fourth, and it even went in, I dare not say that it was unimpeded, but it definitely did not hit the rock layer, because the stick could not penetrate the rock.

Even if it is a salt mine, it will not work, unless that layer of salt ore is very thin, of course, it is possible to chisel through, whether it is chiseled through or not, as long as the depth of the rock layer is determined, it will be a victory for Su Yang.

"It's the fifth, let's work harder."

But this one has also been punched in, it's incredible, how deep is this special code?

In the relationship of time, only the last wooden stick of this material remains, and if it is still finished, it can only be stopped temporarily.

"Ups and downs, ups and downs!"

Everyone worked together to pull up the wooden stick and put it down, but they couldn't put it all down, only a few tens of centimeters at a time.

"Click!" Suddenly, the stick broke.

Su Yang looked down the well, and he couldn't see it clearly, it was too deep. He shouted, "Don't panic, everyone, use the log to the interrupted position and continue to fight." ”

However, I couldn't fight anymore, and finally the wooden stick broke again, Su Yang laughed, it wasn't easy, and finally hit the end with a special code, no, it should be said that it hit the rock layer.

He hurriedly calculated, about thirty-five meters underground, and then chiseled into a hard object suspected of being a rock layer, of course, it may also hit a salt layer.

But the problem appeared again, there was stagnant water underneath, and if this hole went down, it would definitely collapse.

In the end, it took another day to find a location with less water, about ten meters away from the hole just now, almost there, and that is where the hole leads.

"Elders, how did you penetrate the rock formation?" It took him five minutes to get the other party to understand this sentence.

As a result, he got an answer that made him speechless, there was a hole in the salt mine that was directly hit by the Yan clan, and there was no rock layer blocking it, of course, there were rocks under the mountain of the Yan clan, but they happened not to hit it at that time. If you do hit the rocks, there will be no salt.

Envy, jealousy, hatred, dozens of meters underground, how could he tell where the rock layer was and where the salt mine was?

No matter what, after calculating again, the location of the hole was finally determined, because the depth of the rock layer was known, so the distance to go down the hole would not be very long, and their manpower was enough to get it.

As for the warriors in the tribe, let's continue to build houses without delay. But in this case, what should the lotus flower do? (To be continued.) )