Kuroki shook his head and said, "I don't know the exact location, but according to the ancestor's dictation, I only know that the entrance is under the stone bridge, which is about two zhang deep under the water, and the passage is about more than one zhang deep, and in the middle of that passage, there is an iron fence blocking it. ”

Wen Qingshan suddenly realized: "No wonder the dragon's moan sounded so majestic, it turned out to be just separated by an iron fence. ”

Kuroki said: "Don't underestimate that iron fence, it is said to be made of fine iron, very strong, the reason why my ancestors failed to escape from that passage, in addition to the fear of the demon dragon in the water prison, in fact, the main reason is that they could not pry open the iron fence. ”

As soon as he finished speaking, Li Guo said on the side: "This is not a problem, we can use high explosives to blow up the iron fence." ”

"What is high explosives?" Kuroki asked suspiciously, he was born and raised here, and when his ancestors were taken here, there were no explosives in the world, so naturally he had never heard of explosives.

Li Guo didn't know how to explain to him for a while, so he had to say: "High explosives are a very powerful weapon, which can cut mountains and break stones. ”

"And such a powerful weapon?" Kuroki was surprised.

As soon as he heard Li Guo say that explosives should be used, Wen Qingshan immediately objected, saying: "Don't use explosives!" ”

"Why?" Li Guo asked rhetorically.

Wen Qingshan explained: "If explosives are used, it will inevitably make a lot of noise, thus alarming the evil demons. ”

As soon as he finished speaking, the old ghost on the side said, "Don't worry, even if there is a big movement, the demon will not take it seriously." ”

Wen Qingshan was slightly stunned: "How do you say this from the old ghost senior?" ”

The old ghost said meaningfully, "Because in this ghost place, earthquakes are common. The demons have long been surprised. ”

Hearing him say this, I immediately understood what he meant, there was an incomparably large three-headed dragon beast in this yin lake, and its activity could cause an earthquake. Wen Qingshan naturally understood, and said with a smile: "Hehe, it seems that the existence of that giant monster is not necessarily a bad thing, at least it can paralyze the evil demon." ”

"In that case, without further ado, let's go to the lake now!" Li Guo is already a little impatient.

Wen Qingshan nodded, walked slowly to the cliff, looked down, and I also stepped forward to take a look down, wearing a night vision device, in fact, I couldn't see the situation below at all, and I didn't even know how high it was, but I felt that the cliff was very steep, and if I wanted to go down from here, I had to use a rope.

Wen Qingshan took out a bundle of hiking ropes from his carry-on backpack, he fastened one end of the rope to a sharp stone, and threw the other end down the cliff, and then climbed down the rope, and the others followed.

The lakeside is close to the cliff, and there is no foothold, so after we go down, we can only go directly into the water, what I didn't expect is that at the moment I just started, I suddenly felt that my body was filled with lead, and I sank directly, I hurriedly reached out and grabbed a protruding stone on the cliff, which stabilized my body.

I was shocked at first, and then reacted, it was the protective clothing I was wearing was too heavy, this protective suit was built with an all-steel mechanical skeleton, weighing forty or fifty pounds, although I didn't feel it when I walked, but this falling into the water completely became a burden, although each of us still carried a big backpack, but the backpack was okay, it was made of waterproof material, there was air in it, so there was a certain amount of buoyancy, but the protective clothing on the body was not done. If you swim in such an outfit, even if you can hold on for a while, you probably won't be able to swim far.

Wen Qingshan and Li Guo were in the same situation as me, they were also wearing protective clothing, Wen Qingshan held the cliff with one hand, turned his head and asked Li Guo: "I said Captain Li, why is this outfit so heavy!" Isn't it called super soldier equipment? Didn't you think about this situation? ”

Li Guo said a little angrily: "These guys know that they are hiding in the research institute and talking on paper, I guess they haven't considered amphibious combat capabilities at all!" When I go back this time, I must reflect it to the above! ”

The old ghost on the side gloated and smiled: "Hehe, I said that you guys should hurry up and take off the eight king's shells on your bodies, dress like a king, don't feed yourself to the eight kings in this lake!" ”

Although the old ghost's words are harsh, but they are not unreasonable, although the protective performance of this set of equipment is very superior, and the mechanical skeleton is also very useful, but now it has indeed become a burden, there is no way, we have no choice, we have to take off the protective clothing, but the helmet continues to be worn, because the night vision device and the helmet are connected together.

And at the moment when the protective clothing was taken off, I suddenly felt a biting cold, this yin lake is located deep underground, has never been exposed to sunlight for thousands of years, the temperature in this cave is at the bottom, this lake is naturally extremely cold, it is estimated that at most a few degrees, I can't help but shiver, in order to prevent the danger of hypothermia, I hurriedly run the true qi in the body, in order to resist the invasion of the cold.

Wen Qingshan turned his head to Kuroki and asked, "Brother Kuroki, which direction should we swim in now?" ”

Kuroki waved his hand: "Come with me!" Try to move as lightly as possible, but don't alarm the demons above. With that, he swam in one direction, and the others hurried to follow.

The lake water is really cold, I feel as if my hands and feet are going to freeze, in this case, it is very easy to have leg cramps, in order to avoid accidents, everyone try to get close together, and take care of each other.

The group swam forward for about 100 meters, and finally touched the stone wall again.

Everyone was already tired, and they were all out of breath, but Kuroki slowed down for a while, and then raised his hand and pointed to the top of the steep stone wall, panting and said, "This ...... This is the gate of the Sirius Castle. ”

Hearing him say this, I looked up and looked, but because I was wearing night vision devices, I couldn't see it very clearly, and from this angle, I couldn't see what the legendary Sirius Castle looked like, but I could still feel its grandeur.

Wen Qingshan asked at Kuroki, "Is the entrance to the secret passage just below here?" ”

Kuroki nodded and said, "It's two feet below the surface of the water, but I don't know exactly where it is, you wait a while, I'll go down and explore." ”

After he finished speaking, he took a deep breath and wanted to dive underwater, I looked at his appearance, I was really afraid that he would never be able to come up again after diving, so I hurriedly reached out and pulled him down, and said, "Brother Kuroki, leave this job to me!" ”

But Kuroki said, "Let me come, it's even colder underwater, and I'm afraid it will be difficult for you to get used to it." ”

I smiled and said, "Don't worry, I can ask the dustless seniors to help." He is a yin and evil body, and no matter how cold it is underwater, it can't hurt him in the slightest. ”

With that, I summoned Dustless from the stone tablet again, and Dustless probed to determine the location of the entrance to the secret passage, which, as Kuroki had said, was about two feet deep below the surface of the lake, and in the middle of that passage, there was an iron fence that blocked it.

After listening to what Wuchenzi said, we decided to go into the water to have a look, but everyone is very tired now, and the iron fence has not been opened yet, if we all go into the water, we are afraid of danger, after some discussion, it was decided that Long Jiansheng and I will go down first to install the high explosives and blow up the iron fence.

In fact, when it comes to installing explosives, Long Jiansheng and I are both laymen, and Li Guo is an expert, and the reason why I gave such a professional task to us is because it takes a long time to install explosives underwater, and the time for ordinary people to hold their breath underwater is quite limited, even if Li Guo has been trained in this area, he can hold it for three or five minutes at most, and in the current situation of being so tired, it is estimated that it is very good to be able to hold it for a minute or two, if he is asked to install explosives, I am afraid that before the installation is completed, he will have to surface for ventilation. And Long Jiansheng and I have both practiced the art of fetal breath, and it doesn't matter if we don't breathe for a long time underwater, so this drudgery naturally fell on the two of us.

Li Guo took out the high explosives from his backpack, handed them to the two of us, and explained to us the specific installation methods of the explosives. We took the explosives and swam underwater.

What I didn't expect was that the night vision device was completely ineffective in the water, my eyes were pitch black, I couldn't see anything, I had to use my hands to grope the stone wall and slowly dive down.

After diving for a while, I finally found an arc-shaped entrance, I immediately got into it, and then groped inward for a while, and sure enough, I found a row of iron railings, this iron railing is not ordinary thick, it is enough to be the thickness of an adult's arm, such a thick iron railing, no wonder the ancestors of the Hei family could not pry it open.

Now that I have penetrated into the passage, I am not afraid of being discovered by the evil demons on the stone bridge, so I turned on the searchlight of my helmet, but just in case, I turned the brightness of the light to the darkest, and with the help of the dim light, I finally saw the situation in front of me, the diameter of this passage is about one meter, and in the center is an iron fence. The fence was covered with dark green moss, but it was still strong.

I took out the high explosives that Li Guo gave me, and installed them with Long Jiansheng, and we were busy for a while before we finally installed the explosives. But whether I can blow up this iron fence or not, I don't know the bottom in my heart.

We exited the passage and dived to the side for some distance, and after making sure we weren't accidentally injured by the explosives, I pressed the start button in my hand. With a muffled "bang", I felt the stone wall slam violently.