Chapter 340: 2070 Meters Underground

The genius remembers the address of this site in one second: [] The fastest update! No ads! After getting the answer of 80 centimeters in diameter, Zhang Yanhang started to reverse the diameter again, and found that when the length of the red iron original stone pillar reaches two meters, the volume is exactly equal to one cubic meter.

The reason why Zhang Yanhang calculated the volume of the red iron original stone pillar is mainly to avoid wasting grid space. After all, the upper limit of the volume of each grid is one cubic meter, so for higher efficiency, it is necessary to fill up the volume of this cubic meter. .

"Since this is the case, let's set the length of each original red iron stone pillar at forty meters. In this way, the volume of each original red iron stone pillar is exactly twenty cubic meters. My storage box + total There are 800 grids, which are enough to hold forty stone pillars in a row, which means that a distance of 1,600 meters can be excavated at one time.

1,600 meters... It still feels a little short... Maybe I can simply tidy up the grid of the waist bag, and it should be able to free up some space. "

While talking, Zhang Yanhang began to count his pockets. He now has four pockets+, one pocket+, one pocket+, one pocket+ and two ordinary pockets.

"Huh? It seems that a new waist bag+ can be synthesized just right?"

Zhang Yanhang remembered that the two separate ordinary pockets seemed to be obtained from the zombie police in the third prize pool of the slot machine when the Raccoon City was completely emptied last time, but at that time he was in a hurry to sort out the items in the treasure chest of ashes and didn't take care of it fusion.

Zhang Yanhang activated the alchemy technique immediately after recalling briefly and started the fusion of the waist bag +. With the activation of the alchemy circle, the five waist bags with different fusion times inside it quickly began to melt, and they were fused in sequence.

After wasting a little time, there was a brand new pocket+ in front of Zhang Yanhang, "Counting this pocket+ that was just fused together, I now have five pockets+ in total, calculated according to each pocket + thirty-two grids , a total of one hundred and sixty grids...

If you sort out the things in each pocket grid, you can take out at least a hundred more grids to hold the original red iron stone pillars. "

"After I finish sorting out the grid of the pocket, the preparatory work will be completely completed, and the only thing that needs to be done afterwards is to persevere in digging the red iron original stone pillar." Zhang Yanhang sighed silently, and then began to remain expressionless. The collation grid field.

After sorting out all the grids and columns, Zhang Yanhang found that the situation was better than he expected. All the things were added together and only forty grids were installed. There are one hundred and twenty available grids, and there are now a total of nine hundred and twenty grids.

"Nine hundred and twenty grids can hold forty-six red iron original stone pillars with a length of 40 meters,

Therefore, every time I dig a distance of meters, I have to go back and forth to clear the grid and then continue to dig the channel. Calculated based on the depth of 77 kilometers, I need to go back and forth a total of 42 times.

Forget it, let’s stop thinking about these things and start digging directly. The specific data still needs to be practiced to get the answer. "

Zhang Yanhang sighed silently again, feeling sad for the upcoming boring work.

…………

On the 1st of the month, the eleventh day after the Mid-Autumn Festival and National Day holidays, and also the fifth day since Zhang Yanhang left the main world, at ten o'clock in the evening, hematite veins, vertical tunnels, and a depth of 72 kilometers underground.

At this time, Zhang Yanhang was climbing a red iron chain with no expression on his face. Perhaps because he had been relying on this thing for dozens of times, Zhang Yanhang's movements seemed exceptionally flexible and skilled.

That's right, because a vertical tunnel with a diameter of only 80 centimeters is really not a convenient scene to move, so Zhang Yanhang refined the red iron chain to go to and from the bottom of the tunnel and the inner area of ​​the small red iron ant nest Dalagu.

With the increase in depth, although Zhang Yanhang has become extremely proficient in climbing the chain, it still takes him nearly an hour to climb up the 70-odd kilometers. Of course, it will be faster when he comes down. Just fall naturally.

According to relevant physical formulas, when an object falls naturally, it will experience a fixed acceleration according to time. In simple terms, the higher the height of the fall, the faster the final falling speed will be. There is no upper limit to the overall acceleration.

Theoretically speaking, as long as the distance is long enough, the continuously superimposed falling speed can even exceed the speed of light, but the premise is that the accelerated object can withstand this speed without disintegrating, so it is only a theory after all.

Taking the more than 70 kilometers of vertical tunnel dug by Zhang Yanhang as an example, his falling speed is more than ten times faster than that of climbing.

Of course, due to air resistance, Zhang Yanhang's speed was only ten meters per second when he first fell. Therefore, he usually uses a burst of spiritual energy to accelerate at the initial stage to achieve a faster superposition of speed.

But what I have to admit is that although Zhang Yanhang's physical attributes have reached the second-order limit of 50 points, and he also has an indestructible golden body, but if he is allowed to fall straight to the bottom of the passage, it will also be the same. Was directly fell to death, after all, the length of more than 70 kilometers is really terrifying.

Therefore, although the acceleration of the fall is indeed a good thing, it can help Zhang Yanhang reach the bottom quickly, but he will actually slow down from time to time to prevent him from falling to his death.

In terms of the specific method, Zhang Yanhang instantly expanded the energy shield, stuck himself directly in the center of the passage to counteract the acceleration, and then restarted the free fall. This step usually only needs to be repeated several times before he can reach the bottom of the passage smoothly. , the whole process only takes a few minutes at most.

By the way, because of this acceleration, Zhang Yanhang experienced the speed of sonic speed in advance during the falling process. How should I put it, it is indeed quite good.

It's just that Zhang Yanhang hopes that he can actively move at the speed of sound compared to this passive movement at the speed of sound where he can't change his posture at all.

According to Zhang Yanhang's estimate, he should be able to move at the speed of sound as long as he is promoted to the third level at least. At that time, he can passively learn the skill of Sonic Fist without a teacher, although the Sonic Fist in Pokémon It should be different from his definition of Sonic Fist, but it's not a big problem.