In front of the human beings of the seventh-level technological civilization, the galaxy has long had no secrets to speak of.

There is only one mystery, and there is only one place, the planet of human origin: the mother planet of the earth.

Banbu had only heard a few words, and there was no way to find out more about it, not where it was, or what it looked like.

One thing is certain, humanity will concentrate its strongest forces to protect the mother planet of the earth, and it is impossible to be snatched away.

There are so many creatures on the planet beneath our feet that they are in contact with when Zebrabu was a human. In this regard, Banbu has long been suspicious.

The discovery of traces of human supernatural powers deep underground made Banbu sure of one thing: the Zerg gods snatched a living planet from humans while evading the pursuit of hostile civilizations, and transformed it into the one under their feet.

At that time, the transport ship that Banbu was riding encountered space turbulence, and it was probably the Zerg gods who were using space means to move the planet.

Then, I found that the spaceship was full of all kinds of valuable goods, and I grabbed it again.

……

On both sides of the canyon, Rat King and Bai Zhu are still busy, digging ditches, transforming the terrain, diverting water into the canyon, and filling the depths of the ground through deep wells.

Banbu is in a hurry.

Descend directly to the wellhead and look down.

The water poured in, and the black mist swelled, and at this time it had spread to the bottom of the well, and it was pitch black.

"This is the fusion of the two supernatural powers of the Eclipse and the Dementor. Zebrabu, let me go down. ”

Barbar is more eager than Banbu.

Zebra releases its claws.

Baba flashed into the depths of the black mist.

Sensing the movement, Dongzhu arrived first and asked curiously, "Banbu, what's down there?" Neither the Rat King nor Bai Zhu would tell me. ”

"That's because they don't know what it is." Madara preached, "I don't know. Dongzhu, don't ask too much, go up and take care of the life plant of the wedge wattle. ”

"Oh......" Dongzhu refused to leave, and continued to lie at the mouth of the well, looking down.

The Rat King and Bai Zhu rushed over.

"Banbu, you're back so soon?"

"Zebu, is there enough water?"

Banbu unloaded the four electrical boxes and some superconducting wires on his back armor and said, "Bai Zhu, you pack up your things first." ”

"Baba goes down, and it will have an answer right away."

"Baba is here!" Bai Zhu ran forward, lay down at the well, looked down twice, saw no trace of Barba, and acted quickly to carry the electric box.

The Rat King also lay at the mouth of the well to check.

Waited left and right, most of the day passed, and Baba was never seen returning.

"Banbu, Baba has gone down? Will it be ......" The Rat King asked uncertainly, "There won't be any accidents, right?" ”

Bai Zhu asked, "Baba won't run out of power, right?" Or ...... by that erosive force"

"Baba has plenty of electricity." Banbu was also a little worried, and a little inexplicably anxious, waved his wings, and said, "You guys continue to be busy, the rainy season is coming, right?" Fill with more water. ”

With that, Banbu crawled down the wall of the well.

Tentatively touching the black mist, there is still a strong erosion, and the strength of the carapace cannot be resisted.

"Barba's shell is made of special material and will not be affected by supernatural powers."

"I'm afraid that its detection system will be shielded and suppressed, and it will be lost in it......"

Banbu couldn't think of any other way but to go back and lie down at the mouth of the well and continue to wait.

A whole day has passed, and Baba has not returned.

There must have been some kind of accident.

Wait another three days, and there will be no news.

Banbu was completely panicked and began to use his metal ability to transform the lifting winch equipment into a set of air pump equipment.

……

The canyon is located in the subtropical southern-region of the Southern Hemisphere continent and has a rainy climate.

Heavy rains occur in late spring.

Rainwater drains and swells into deep wells.

At the bottom of the well, the black mist churned.

Spring goes to the summer solstice, and torrential rain pours.

In autumn, it is often a rainy day for several days.

"Blabu, it's full! It's out! ”

From under the cliff, there was the cry of Dongzhu.

"Dongzhu, get out of the way!" Bai Zhu emerged from the cave where he lived, beckoning and reminding.

Lying on the ground under the god-given seed of the wedge tree, Madara stood up and galloped towards the mouth of the well.

The Rat King also came out of the cave that had opened up the cliff wall, and without the command of Banbu, ran to the water-holding levee on the south side and dug a gap in the embankment.

The black mist overflows from the wellhead, is irrigated by rainwater, rapidly expands, and is a gaseous substance with a high density, flowing slowly along the diversion ditch.

At the end of the canyon is a steep slope with a natural river underneath.

The black mist meets the river water, and suddenly explodes to form a large mass of pitch black, and then, the color begins to lighten, and the fine rain washes down, rapidly expanding, and at the same time, turning gray, and then turning white.

White is ordinary water vapor.

……

Next to the wellhead, there was also a gray mist.

The Rat King stretched out his claws, tried the black mist flowing down the ditch, and immediately retracted it, and said in fear: "It's too powerful, I still can't bear it." ”

Zebra's mind turned, the ground soil and stone metallized, condensed into a black alloy stick, carried, probed into the black mist at the wellhead, waited for a few minutes, took it out, and looked again, the alloy stick was eroded by the elemental power, covered with holes the size of a needle tip.

"No, I can't. The erosion force is still too strong! Madara said: "Keep waiting, it will take a few rainstorms." ”

……

Natural weather, mostly sunny.

The rain in autumn and winter is very weak and difficult to collect into a stream.

The only river in the vicinity is 5 kilometers away, still flowing down the low terrain, and there is no way to divert water from the river just by digging.

Can only wait.

Wait patiently.

The Rat King and the White Bamboo Rat King found an iron mine, excavated it hard, smelted the zebra and winter bamboo, and moved the finished metal back to make a section of alloy steel pipe for later use.

Winter has gone to spring, and Baba has disappeared for a year.

Hundreds of streams converge to form turbulence and fill the wellhead.

Correspondingly, the black mist expands and flows outward, down the ditch, all the way out of the canyon, into the river, and finally disappears under the rain curtain and returns to nature.

Spring rain after spring.

Late spring season.

The torrential rain fell intermittently for two days, and the black mist overflowing from the wellhead was noticeably dull.

The zebra was tested again with a metal rod.

This time, the rate of erosion and decay was much slower.

"Zebrabu, is it okay?" Bai Zhu asked.

"It's been a year, just wait." Banbu was not in such a hurry at this time, and said indifferently: "Wait for the next rainstorm." ”

……

Six days later, the first rainstorm of the early summer season arrived as scheduled.

Banbu took the Rat King and Bai Zhu and began to erect the ground pipes and assemble the motors.

When the rain stopped, the erosion force of the deep well fog had weakened and it was difficult to penetrate the alloy pipe wall.

When the power is turned on, the motor drives the whole set of air pump equipment to run "woo woo".

At the exit of the pipe, black mist gushes outward.

Deep wells, black mist descending rapidly.

The metal pipe is divided into a 5-meter section, and every 5-meter depth is extracted, the zebra immediately steps forward and connects the next section.

Four days later, it finally bottomed out.

Baba is not at the bottom of the well!

The spotted cloth is tied to a steel rope and enters the crack test.

Now the concentration of black mist, the carapace can resist erosion, but that kind of soul suppression is still there, and it is still difficult to run the "Soul Dementor Mystery" for more than 3 minutes.

The power of the motor is limited, and it can only extract the black mist at a depth of about 200 meters down from the crack, which is deeper and cannot be extracted.

After a year of waiting, Banbu was already in a hurry, and waited patiently.

This is a whole summer.

Every time it rains, the black mist rises a little, and the motor is immediately used to pump out the discharge and channel it into the river.

After repeating more than ten times, the fog concentration in the crack turned pale black, and finally, after an autumn rain, it completely transformed into a gray fog cover. It affects the vision a little, but the power of the supernatural power is almost none.

Banbu expands the space at the bottom of the well, transforms the metal used to make the air pump into a set of nooses, tied with steel wires, and personally enters the cracks to investigate deep underground.

Under the hazy gray mist, it is faintly distinguishable, and the space below is very open.

Drop a piece of gravel, and after more than ten seconds, there is an echo of falling to the ground, and there should be a hard stone ground underneath.

"Buba!" Banbu drummed up his spirit and shouted.

"Zebra! Be careful, don't come down! An echo of Baba could be heard below.

"Buba, what's going on?"

"My anti-gravity engine was also disturbed by gravitational waves, it couldn't start, I couldn't move. This is the Earth Piercing Star Dojo, and the specific location is the martial arts arena, which is a forbidden place for electronic life. ”

Banbu crawled along the crack, approaching the location where Barba's voice came from, and his mental power condensed into bundles, quickly locking on to Barba's location.

"Barba, do you feel my mental power?"

"My light-sensitive detector is still usable, I see you, don't come down!"

"In danger?"

"Yes." Baba said angrily, "I've been to this damn place, and there's a silent force field that shields my tachyon wave detector, and I've been to every martial arts arena in every dojo, and it's the place I hate the most. ”

"Damn the Zerg, they actually snatched the human Earth home planet."

Banbu asked, "What's the danger down there?" ”

"Stupid! In such an important place, electronic life is limited everywhere, and the defenses must be extremely strict. Baba said: "You are now a Zerg, and you will definitely trigger the defense system of the dojo, and if you come down, there will be no scum left to die immediately." ”

"Understood." Banbu asked, "Is there a solution?" ”

"Yes." Baba said, "Keep pouring water, throwing rocks or other garbage down, anything, just throw it down." ”