Welcome to Xiuzhen Academy

Not long after walking forward, I saw a familiar figure digging for something in the snow.

"Why are you here?" Sai Mi glanced at her and continued her movements.

Yu Qian saw several dug holes around him, as well as in places further away.

The snow is very soft, and you can dig a hole casually. But after reaching a certain depth, there is ice underneath. The ice is eight or nine meters thick and is as hard as iron. Yu Qian simply thinks that Sai Mi is a King Kong, on such a solid ice layer, used a sword to dig out a hole two meters deep under the ice.

Seeing Sai Mi's body disappear from the horizon, he went down and began to tinker with the ice layer underneath.

Yu Qian stood on the edge, looked down and asked, "What are you doing? Dig yourself a place to bury the coffin?"

"I dug it for you." Sai Mi didn't even raise his head, "I'll kill you and bury you inside later."

"I'm sick." Yu Qian kicked the snow, and suddenly the snow on the ground fell down, covering Sami's body, "I'll bury it for you now."

"Childish" Sammy shook the snow off her head and pried off the snow she was stepping on with a sword.

Yu Qian's feet were in the air, and before he could react, his whole body fell into the pit along with the collapsed snow.

She climbed out of the snowdrift and was about to curse.

Sai Mi waved: "Come and see."

She swallowed back the curse words and leaned over: "What are you looking at?"

"Here, do you see it?" Sai Mi dug out the ice layer thinly, and the dark mass underneath was vaguely visible.

Yu Qian couldn't tell what it was: "What is it?"

Sai Mi stopped moving: "The passage is sealed by molten iron."

"Is this the hidden passage in the base?" Yu Qian reacted, "If they are all blocked, how did the sea monkeys get in before? Is there any other way?"

"No more." Sai Mi said, "I've seen it all, and there's only this hidden passage, so I'm more inclined to believe that they were sealed in the base from the beginning, and didn't come in from the outside."

After saying that, she climbed out of the pit.

Yu Qian also climbed up: "Are the passages connected to each other? Does it lead to another base?"

"You got the point right." Sai Mi looked at her. "The answer is no, it doesn't lead to any base. That's the problem."

The secret passage built in the base does not lead to the base.

That's really interesting. What else can this passage be used for?
Yu Qian suddenly became interested and asked, "Do you have any clues after digging for so long? Do you know where it leads to?"

Sai Mi shook his head: "I don't know yet, I have to keep moving forward and follow it."

She stepped on the snow with one foot deep and the other shallow, and continued walking in the direction where the passage extended.

Yu Qian forgot about Bai's whereabouts and followed him.

After walking about another two hundred meters, Sami started digging a hole again.

Yu Qian squatted above: "You are like a gopher."

Sai Mi looked up: "You have time to talk nonsense but no time to help?"

"No." Yu Qian said, "Now is the time to squeeze the employees." Nearly half an hour later, with the help of spiritual power and physical strengthening, the ice layer was dug quickly, and a dark and fuzzy shadow was vaguely revealed below. .

"The direction is right." Sammy climbed up neatly.

The two of them continued forward.

Just like this from early morning to afternoon, when they got tired or exhausted their spiritual power, they would take a short rest in the dug ice pit.

When Sammy climbed up from below again.

Yu Qian looked in the direction he came from: "From this angle, why do I feel like this passage is spinning underground?"

Semi also discovered: "It is not a straight line. This arc is dug from the outermost layer. If the entire passage is dug at this angle, then it will be a circle that surrounds all military bases."

"Why did they dig such a passage?" Yu Qian could not think of a reasonable explanation. "If it is for evacuation, the underground fortress can be used. If it is for passage, this passage does not lead to any base."

Sami shook his head: "I don't know, have you ever heard of the requirement for emergency passages in war?"

"I haven't heard of it, but I know with my own feet that the emergency exits are already in place. Are you not asking for death if you go to such trouble?" Yu Qian said, "Tsk, let's just blow this place up."

Sai Mi looked at her like a madman: "Are you sick? The ice is so deep and the passage is sealed. How much explosives are needed?"

"With such a large amount of explosives, even if the bottom is blown open, how can we live better on top?" She said so many words at once for the first time, "Let's not talk about the avalanches in the surrounding snow mountains. Just the snow landslides and ice layers Fractures would be troublesome, not to mention that some of the ice beneath the snow is glacial lakes and glaciers."

Yu Qian thought for a while, and indeed, her habitual thinking made her subconsciously deal with obstacles by erasing them.

But in the North, it is obvious that this idea is unreliable.

Sami shook his head: "I rarely say this to other people, but you are too radical."

Yu Qian said helplessly: "But I really want to know what's down here. Think about it, a circular passage with all the gaps in the building filled with molten iron. It's not for walking, so what is the space inside it used for? Woolen cloth?"

"Maybe it's for weapons or..." Sammy thought for a moment.

"No!" An idea flashed in Yu Qian's mind, "No, no, no, there is another possibility."

"What?" Sammy looked up at her.

"You know fish tanks, right?" Yu Qian said, "Don't you think such a long passage is like a fish tank? Or a sheep pen? Do you know what I mean? It's like the glass around the fish tank or the fence around the sheep pen. , surrounded the Northland."

Her eyes lit up: "What is in the passage may not be important. What is important is what is under the ice in the entire Northland!"

Sai Mi opened his eyes wide: "You mean...the so-called passage is just a restricted circle, and there are other...creatures and so on in the restriction?"

"Yes!" Yu Qian nodded, "The length of this passage is beyond imagination. It is expected to surround the entire war zone in the North. Why do they want to build such a long passage? Passage? Impossible. It is simply unnecessary and used to store supplies. Even more inappropriate, they can be stored in storage rooms or underground fortresses."

"And we can only see its thickness from above, so we speculate that it is a channel. Perhaps its depth is beyond imagination. It is not a channel, but a wall!"

"The most likely possibility is that it's a wall! They built such a barrier underground just to enclose what's underneath."

"Do you remember the glacial lake we passed by on the way here? There are many mutated monsters in the lake."

Sammy also figured it out: "So the glacial lake is also part of it, and there are more such areas underground that are frozen by the ice below."

"That's right, including the underground glaciers you mentioned." Yu Qian said, "A circle along the Northland War Zone, all the underground areas are blocked by this wall. Don't you want to know what's inside? Now, change place, keep digging.”