Chu Han did not lose his sense of proportion because of the urgency in his heart to find his father's whereabouts, he knew very well how tight the time was at the moment, it was difficult to find such a large area in an hour, and he didn't have time to look through everything one by one at this moment, as for what consequences the abduction of these materials would bring to this research institute and even the Nandu base, Chu Han didn't have time or mind to think about it at the moment.

Chu Han's speed was quite fast, coupled with Wangcai's reaction and immediately joined the action, a large number of rooms in the circular corridor were swept in just twenty minutes, and when Chu Han went around in a circle and a half to meet Wangcai, he suddenly noticed that something was wrong.

"Chu Han!" Wangcai didn't have any suspicions at all, but shouted at Chu Han excitedly: "There is no one here, and my speed is as fast as yours, half a circle has been bypassed!" Alas? Chu Han, what are you looking at? ”

The cold light in Chu Han's eyes flashed, and he looked at the wall opposite the door where he had just walked out of the room: "It's not that we are fast, don't you think the number of rooms here is too small?" ”

"That's less?" Wangcai rolled his eyes in surprise: "Our Nima has swept more than a hundred rooms, and Lao Tzu's private space is full of messy waste paper that I don't know what it is." ”

"But each room is small, and most of them are ordinary personal offices, most of which have obviously not been tended to for a long time, and there is a thick layer of dust on the desks." The corners of Chu Han's mouth twitched, and suddenly without warning, his footsteps were raised, and he walked quickly towards the other side of the corridor: "Did you see the door on this wall when you came over?" ”

"What?" Wangcai hurriedly followed Chu Han's footsteps, looking puzzled: "Which wall?" Aren't there doors everywhere? ”

"Wrong!" Chu Han's tone was cold and serious: "All the rooms are on the periphery, and here is a circular corridor, which encloses such a large area in the middle. ”

Speaking of Chu Han's footsteps, under Wangcai's suddenly awakened gaze, he suddenly pointed to the huge cylindrical wall in the middle: "What is hidden inside this wall?" ”

"Ghosts?" Wangcai almost blurted it out.

Chu Han shook his head speechlessly, expressing his acceptance of Wangcai's inability to get closer and closer to human thinking, and it seemed that he was the most emotionless one in comparison.

"But how do we get in?" Wangcai followed behind Chu Han all the way, and he didn't dare to leave a single step, this place seemed to be quiet and there was no one else, but the creepy smell of blood, not only Chu Han, but also Wangcai smelled it.

It's just that at the moment when Wangcai asked this sentence, Chu Han did something that made it even more creepy!

Rumble!

The huge black axe didn't discuss with anyone at all, and slashed directly at the wall with one fell swoop, and at the same time-

Whoa!

The wall shattered and collapsed almost instantly, collapsing into the ground and stirring up a thick puff of smoke, directly breaking a large hole.

Wangcai's whole person was instantly struck by lightning, and he looked at the dusty and broken wall in front of him in a daze, and broke in without finding the door?

"I relied on Chu Han to get into trouble with you! What now! Wangcai instantly screamed: "Didn't he say that you can't cut things indiscriminately, there will be an alarm, ah, ah, I just said that you forgot about it later, and now even the wall is smashed, you are crazy, you, as soon as the alarm sounds, all the people are coming, even if you are in the seventh order, you can't escape...... Huh? ”

Suddenly, Wangcai's chatter suddenly stopped, and he looked around a little dumbfounded, there was silence, and nothing happened.

Chu Han, on the other hand, took the Shura battle axe off a wall next to it with a soft click.

"Where's the alarm bell?" Wangcai asked sluggishly.

"Smashed." Chu Han's answer was light and light, and he looked straight ahead without giving Wangcai a single look.

Wangcai swallowed back before he could say anything more, because as the dust fell, the strange wall finally revealed its original appearance.

The world behind the wall was beyond all the imagination of Chu Han and Wangcai, this was a dark tunnel that went too deep underground, like a huge well going straight down, looking down from the top for a while, I couldn't see the bottom at all, and within the limited line of sight, the circular wall at this mouth was quite smooth, which was why Chu Han said at first glance that this was a tunnel and not a deep hole.

It's hard to imagine how much financial and material resources it took to create this place, and it's hard to believe that it was created by the end of the century.

And the reason why this wall is so strangely and completely wrapped is to cover up this tunnel that leads somewhere!

Wheel!

Wangcai swallowed nervously: "I don't think I believe this is something that can be established in the Nandu base!" ”

"So I just made a bet." Chu Han's voice was never more solemn: "It seems that I won the bet, Shangguan Rong really doesn't know that the base under his jurisdiction actually hides such a place." ”

"Do you bet on Guan Rong to know everything about the institute?" Wangcai was a little nervous and asked casually.

"Nope." Chu Han immediately denied it, and the next sentence almost made Wangcai collapse: "What I bet on is that the alarm is independent, not connected to the outside of the research institute." ”

Wangcai looked thoughtful and terrified: "So? ”

"The alarm has been vandalized for so long and nothing has happened, so this is just a cover to scare off a kid like me who doesn't know the height of the sky and the thickness of the wall and smashes the wall." Chu Han sneered: "Since such a secret place is not connected to the guards outside, it is easy to deduce that this place was built without Shangguan Rong's knowledge. ”

"Don't tell me you're going down." Wangcai gave up following the rhythm of Chu Han's anti-heaven thinking, and pointed to the pitch-black tunnel below with a face full of rejection.

Chu Han didn't answer at all, he directly threw Wangcai into his pocket, and then a rope with a hook was suddenly taken out of the dimensional space, and without saying a word, he began to climb down.

In such a secret tunnel, the smell of blood that I had smelled before came from below, so it can be seen that this place is definitely the biggest secret of the research department.

Maybe Daddy is down there!

It's just that Chu Han, who is climbing down all the way, is very puzzled, shouldn't the research institute of the Nandu base be under Shangguan Rong's command, how could there be an unexpected situation here?

Who is the person who manages the Nanto Base Research Institute? Where did he get the money to build such a massive underground tunnel? , Moreover, the construction will inevitably cause huge movements, and in what way did the other party hide that Shangguan Rong had completed the construction?

At the same time, in the monitoring room of the research institute on the first floor above ground, the three of them, who were originally quiet and silent, were waiting nervously, but the sudden trembling and the sound of something breaking under the ground made Heshang, who had been sweating for Chu Han, suddenly pale.

"Damn, boss, don't be so violent, okay?"