After coming out last time, the mouse and others built the spring with stones and filled it with cement.

For a long time, the mouse thought that he should live in a cave where there was no light all the year round, just like the small creature he represented.

The feeling that only he exists in the world makes him feel infatuated.

But since he has been to this natural sound channel, he doesn't yearn for that kind of day anymore: if you hide in the dark, you can overhear the hiss of poisonous snake vomit, which is right in your ear, but you can't see it. Will you be afraid?

If you are afraid, then the mouse is also afraid. After all, he is a person, not a real mouse.

Moreover, this is only the danger brought by the vocal tract. If you see it again this time, the dark shadow that can't see anything last time flashes by - if you can't shorten the time as much as possible, Yan Ying may be tied in that area. Even if someone holds a pistol against the mouse's head, he won't go in.

Boom!

It was like the sound of thunder. After the old cow pried open the spring with a steel pipe, it came from the inside. It was the sound of a broken stone rolling down a slope with a full 45 degree angle.

According to the calculation that the sound propagation speed in the air is more than 300 meters per second, when the rumbling thunder stops, the square has roughly calculated the length of the slope from which the rubble rolls down: less than 500 meters.

After the thunder like sound stopped, the strange chicken cry also stopped.

Mice and others began to plug their ears with cotton.

The last time they went down, they didn't expect to go down the slope and go in. Soon, they entered the terrible sound channel. They had to tear off their skirts to block their ears.

The sound insulation effect of the skirt is not as good as that of cotton, because the fiber has the shockproof function without cotton.

It may have been guessed that one day it would go to this ghost place, and the mouse specially prepared cotton.

After receiving the cotton handed over by the mouse, Fang Yuan also plugged his ears.

When the mouse turned back, everyone nodded to him before he raised his hand.

When the black snake first became one of them, it twisted and drilled into the humanoid hole, followed by the gray rabbit, and the third was the green dragon -- from the sequence of the twelve zodiac animals, we can see that the mouse ranked the most vicious and vicious people in the front.

This also means that once there is any trouble ahead, the three people will use their best Kung Fu to try to remove the danger at the first time.

After sister Ma squeezed into the hole the third to last, the mouse raised her hand and made a gesture of invitation.

The black snake takes the lead, and the mouse with the strongest Kung Fu in the Chinese zodiac is broken. This is a habit they have developed through tacit cooperation for 40 years.

When they suddenly start fighting, the twelve people will quickly form a whole, give full play to their best Kung Fu, echo each other and make up for each other's shortcomings -- just like the word long snake array under the ancient strategists: hit its head and echo its tail; Strike the tail and echo the first; Hit the middle, then the first echo.

The mouse let Fang Yuan go first and made it clear that he wanted to put him in the safest position (this position was originally owned by sister MA). It was not only a gesture, but also a responsibility.

Fang Yuan smiled and shook his head. He didn't speak. He raised his hand and replied with an invitation gesture.

No matter how "noble" his status is, in the following voice channel where unexpected dangers may occur at any time, he'd better not mess with the 40 year tacit cooperation of the Chinese Zodiac because of his own safety.

Besides, Fangyuan doesn't need anyone to protect it.

The mouse did not reluctantly, shrunk his shoulders and skillfully drilled into the humanoid hole.

Fang Yuan had better drill in, pull the rock outside with his left hand, stretch his neck and look down.

On the big slope under his feet, the twelve zodiac animals were lined up in a line, but except for the green dragon in the third place, the money monkey king in the seventh place and sister MA in the eleventh place, who lit a flashlight, others hid themselves in the dark as much as possible.

The green dragon, who ranks third, is the tallest of the twelve zodiac animals. His flashlight will only shine ahead, hiding the fastest and most vicious black snake and gray rabbit in the shadow of the lights.

This arrangement is to prevent the black snake and grey rabbit from quietly launching a sneak attack when they can take advantage of the danger to pay attention to the green dragon.

Similarly, this also proves that Qinglong's risk coefficient is the highest among the previous people, just like a live target.

But this is his role in the Chinese zodiac. His horizontal kung fu training and super bulletproof vest are the only way for him to become a live target and not die.

The money Monkey King, who ranked seventh, did not hold a flashlight himself, but the monkey on his shoulder.

When the team moves forward quietly, the monkey will only aim the flashlight at the green dragon and form a line with the flashlight in front as far as possible, so as to effectively hide the people in front under the shadow of the lamp.

Of course, sister Ma, who can count on her cooking and medical skills, is the weakest link of the Chinese zodiac. Therefore, she needs the thinnest and best Kung Fu mouse to follow behind her like a tail and hide in the shadow of the lamp to solve the big guy's worries.

Fang Yuan stood at the entrance of the cave. Just looking down, we can see from the line of the twelve zodiac signs that their seemingly random line-up actually contains secrets that others can't imagine. It is also the best formation with the strongest attack power and the fastest retreat speed.

As a group, the twelve zodiac animals can make progress and retreat for 40 years without damaging one person. It's not a fluke, but they give full play to the advantages of team combat as much as possible. They highly value group cooperation. They can't help but praise the mouse who looked back at him and nodded gently.

Sister Ma's flashlight immediately shook and shone on the money monkey king who ranked seventh.

The little monkey on the monkey king's shoulder locked the green dragon's hand by means of light. After the electric light, the twelve zodiac animals really turned into a long snake with 24 feet and swam forward quickly and silently.

Even if the road is flat, the third ranked green dragon's hand lightning will swim back and forth, giving people a flickering sense of reality, just like the head of a long snake swinging left and right.

Fang Yuan followed the mouse silently, about four meters away from him, completely hiding himself in the dark.

This distance will not affect the instinctive action of mice when encountering unexpected danger, but also avoid letting enemies who may lurk in the dark. I don't know that there is a mouse and a thirteenth person behind sister ma.

There is no danger. Only the rustling footsteps that cotton can't stop, and occasionally someone kicks a small stone, will make a thumping sound, just like a heart beating.

If there is no accident, according to the big guy's marching speed, he can run these 20 kilometers in 40 minutes -- the road under his feet is extremely flat, and Fang Yuan once bent down to wipe it.

As the mouse reported to him, there was an unexplainable path under the spring.

What is Chi Dao?

Chidao is the earliest "national highway" in the history of the Han nationality. It began in the Qin Dynasty. In the second year (222) after Qin Shihuang unified the country, he ordered the construction of chidao centered on Xianyang and leading to all parts of the country, with a width of nearly 70 meters.

Of course, the width of the lane under the spring is not 70 meters, which can be passed by a truck at most. The reason why the mouse said it was a lane is because he once dug the road with a knife and found that it was built with the ingredients of the paved lane.

The mouse suspected that this galloping road was probably built by the small vassal state recorded in the county chronicles of the king of Tang. He didn't know how it was hidden at the foot of the mountain. He could only guess that it was used to escape for his life.

Fang Yuan thinks it's not: let alone a small vassal state during the spring and autumn and Warring States periods, even if Qin Shihuang wanted to build such a galloping Road underground, even if the formation of this underground tunnel was made of granite caused by the earthquake, future generations only need to carefully process it on the basis, and it also needs at least tens of thousands of people, Years of hard work.

But there are no records left in all the history books of the Qin Dynasty.

What makes the most sense is that on the left side of Chi Road, there are many ditches and grabens in troubled times. On the right side, there are many murals with rough lines carved on the granite mountain.

Mice and others do not have any research on archaeology. When talking about these with Fangyuan, they only say that the murals are like three-year-old children's graffiti, and do not say any characteristics of the murals.

Under the influence of goats and the relationship between occupations, it can be seen at a glance that these murals, which have been washed away by springs all year round and have been blurred, have the characteristics of ancient western regions.

Since ancient times, the king of Tang has been subordinate to the mainland. Whether it is the small vassal state in the spring and Autumn period and the Warring States period or modern times, how can there be murals with the characteristics of the ancient western regions on one side of the underpass here?

"Hehe, hehe."

At the foot of Fangyuan, I kept walking forward against the rock wall, and suddenly there was a strange laughter in my ear.

The laughter was like a man, a woman and an owl.

It sounded half a meter around the left ear.

It's clear and harsh.

It was completely subconscious. The left shoulder sank and the bright silver army stab in his right hand stabbed him silently, like a poisonous dragon jumping out of the abyss.

The action was just half done. The light in the corner of the eye did not stop at all, but still ran forward quickly close to the right side.

I'm ashamed that I'm not as calm as the zodiac.

Fang Yuan's right hand shook, and the army thorn retracted and hid under his rib again.

The mouse has made it clear to him that when a person is deep in the vocal tract, the sound will be expanded dozens or even hundreds of times. Then even if he has cotton in his ears, he can still clearly hear the strange smile. He can only say that the actual distance of the laughter is at least tens of meters or more.

And because of the uncertainty of the direction of the sound channel, he can't capture the definite source of the sound.

Obviously, before there are no obvious dangerous targets, the twelve zodiac animals that have completely formed inertia and tacit cooperation will never stop because of a strange laugh.

It will not disturb the queue they still maintain in their gallop, just like they can't hear it.

Even when the rats are fully absorbed, they may have forgotten what is behind them.

"Woo, woo, woo."

After Fang Yuan was ashamed, he just restrained his mind and quickly followed, and a cry came from his ear.

Still in the left ear, still so clear, that distance.

It's still that voice. It sounds strange and creepy.

Fang Yuan ignored.

He never liked to be ashamed for the second time.

Soon, the cry disappeared like laughter, only the rustle of more than a dozen people running along the road.

"Alas..."

The third time, a sound other than footsteps sounded from Fangyuan's ear, but this time it was a sigh.

Incomparable clarity.

According to this sigh, Fang Yuan can instinctively judge that its owner is a young woman.