We walked slowly along the cave path, and after walking a short distance, we found a fork in the hole.

Without saying a word, Long Yi immediately took out an instrument with a display screen from his backpack, and he told us that this is a trip recorder, which can record all our trips, and this trip recorder also has the function of drawing a topographic map, with this instrument, it can not only effectively prevent us from getting lost in the intricate cave, but also draw the topographic map of the cave through our in-depth exploration.

We chose a wider tunnel to continue on, and as we went deeper, we found more and more forks in the cave, although we had a trip recorder in our hands, but it was not a matter of time to completely explore the entire cave system.

Wen Qingshan frowned and said, "It seems that this underground cave system is not only huge, but also very complicated, if you want to find Professor Dong and them, I'm afraid it will not be easy. ”

Long Yi pondered for a moment, raised his head and said, "I happen to have two trip recorders here, and the two trip recorders can be interconnected, otherwise we will search in two ways, so that we can achieve twice the result with half the effort." ”

Long Yi's proposal was approved by everyone, so we divided into two groups, Wen Qingshan and Li Guo and three more special combat team members as a group, Long Yi and Chen Biao led the other five special combat team members as a group, and the two groups began to search separately.

On the one hand, we checked as we walked to see if we could find any clues they had left behind, and on the other hand, we also brought equipment specially designed to detect the signals emitted by the GPS locator, so if Professor Dong and others really entered the underground cave, then it was possible to detect the signal emitted by the GPS locator they carried.

A few of us walked along the cave road, and after walking a short distance, suddenly there was a rustling sound in front of us, and we thought that there was a monitor lizard infested, so we hurriedly stopped, and looked carefully forward with the help of searchlights, but we saw nothing.

Just as I was wondering, suddenly a huge black shadow came out of a stone cave with a diameter of about twenty or thirty centimeters, and with the help of the light, everyone was taken aback, it turned out to be a mouse bigger than a cat!

Due to the bright light, the giant rat, which had lived in the dark for a long time, seemed to be a little uncomfortable and remained motionless. Its eyes were blood-red, and its ears were long and wide, which felt a little out of proportion to its pointed head, and if it weren't for the long rat tail, it would look a bit like a rabbit at first glance, but its appearance was much fiercer than that of a rabbit, and it was not a good stubble at first glance.

"Holy! Why is this rat so big!? Li Guo couldn't help but exclaim.

I have seen this kind of giant rat before, in the cave where I encountered a snow monster and a giant otter in Tibet, I encountered a group of such giant rats, and I first saw a few giant rats eating the carcass of a horse, and then we were chased by a large group of giant rats, and we were very impressed.

Wen Qingshan has naturally seen this kind of giant rat, he said: "This giant rat is a kind of social cave rat, which generally lives in a cave that does not see the light of day, and is very fierce. ”

Hearing Wen Qingshan's words, a special combat team member immediately raised his gun and aimed at the giant rat, and asked in a low voice, "Team Li, do you want to kill it?" ”

Li Guo stopped unhurriedly and said, "No! It's a big thing, but it's not a threat to us, and it's not a waste of bullets. ”

As soon as he finished speaking, the giant rat suddenly raised its head and let out a shrill squeak, and a moment later, there was a rustling sound everywhere around.

I couldn't help but be shocked, hurriedly looked around, and said, "Damn! Isn't this thing summoning companions!? ”

Wen Qingshan immediately said: "Let's get out of here quickly, if it's really a giant rat swarm, I'm afraid it won't be easy to deal with!" ”

As soon as we heard this, we immediately walked forward quickly, and Li Guo yelled at the giant rat that was blocking us, trying to scare it away, but what people didn't expect was that instead of being scared away, it let out a sharp and piercing squeak at us.

Wen Qingshan stepped forward quickly, pulled out the long knife, raised and fell in his hand, and chopped off the giant rat's head with a single sword.

After solving the giant rat, we quickened our pace and walked forward, but before we had gone far, we heard a rustling sound behind me, I hurriedly turned my head to look, and couldn't help but be surprised, only to see a large group of black and crushed giant rats swarming towards us. The amount is staggering.

With so many giant rats, I'm afraid that even if the speed of fire of the guns is, it will be difficult to eliminate them for a while, and the speed of the giant rat swarm is very fast, and it seems that it won't take a while to catch up with us.

At this critical juncture, my mind was stirred, and I suddenly thought of the way to deal with the hungry rats in the Evil Stone Tomb, and that was to use tear gas! Hurriedly shouted: "Throw a tear gas canister and try it!" ”

Li Guo was stunned for a moment before he reacted, and immediately grabbed a tear gas canister and threw it at the swarming giant rat swarm.

After a few moments, I heard a muffled "poof" sound, and a puff of blue-white smoke came out of the giant rat colony. The smoke spread quickly, but in the blink of an eye, the entire tunnel was filled with smoke.

It really worked, and the giant rat couldn't stand the pungent smell of the tear gas canisters, and soon fled in all directions.

Finally getting rid of the giant rat's pursuit, everyone was still a little frightened, and one of the special operators gasped and said, "What the hell is this place, lizards are bigger than crocodiles, and rats are bigger than cats!" ”

"I think there must be something more terrifying, so you better be careful." When Wen Qingshan said this, he looked at me, and I immediately understood what he meant, if this cave system really had a passage to the hell realm, it was indeed possible that there were even more terrifying monsters, such as the Black Water Snake, and then the giant ground otter with the size of an elephant. Thinking of this, I couldn't help but gasp.

We continued to move forward, and along the way, we were besieged by the giant rat herd many times, but fortunately we had enough ammunition, and each time we relied on tear gas to save the day. After contacting Long Yi and Chen Biao's group, they also encountered a group of giant rats, but fortunately, they also knew how to use tear gas to deal with giant rats, so there was no danger.

Unconsciously, we have been circling the cave for nearly two hours, but we still haven't found the slightest thing, and the hope of finding Professor Dong and the others seems to be getting slimmer and slimmer, and there are so many terrible man-eating trolls in this underground cave, if they really enter here, I am afraid that it will be more than lucky.

Just when I was about to despair, the special combat team member in charge of detecting the GPS locator signal suddenly shouted: "Wait, it seems that the signal has been found!" ”

When I heard this, a glimmer of hope suddenly ignited in my heart, and I hurriedly leaned over to take a look, and sure enough, I saw a red dot on the screen of the instrument in his hand flickering a few times from time to time.

"Where's the signal?" Li Guo asked.

The special operator replied: "To the northeast, the distance from where we are now is 3,230 meters. ”

"What did you say!? 3230 meters, isn't that 3.2 kilometers!? Wen Qingshan exclaimed.

The special operators nodded.

"You're right? So far!? Wen Qingshan seemed to be a little unconvinced, and he also leaned over to take a look, but it was a professional instrument, and he couldn't understand the number on it.

"I can't be mistaken!" The special combat team member said angrily, and he seemed a little unhappy with Wen Qingshan's distrustful tone.

Wen Qingshan was even more shocked: "How is this possible, the distance is 3.2 kilometers, so how big does it have to be down here!?" ”

Li Guo said: "Now that the signal has been detected, let's go over and take a look!" When he said this, he immediately called Long Yi and Chen Biao on the walkie-talkie.

When Long Yi and Chen Biao learned that we had detected the signal from the GPS locator, they immediately said that they would rush over to meet us and let us rest and wait in place.

Each of our groups is equipped with a formation recorder, and there is a signal connection between the two recorders, thus forming a closed network, that is, they can not only know the specific position we are in now, but also find the fastest route to get to where we are.

With the help of the trip recorder, they found us after only twenty minutes, and without saying a word, Long immediately stepped forward to check the signal detected by our detector.

He confirmed that it was the signal sent by the GPS locator carried by Professor Dong and his party, but perhaps because the distance was far away and the terrain was more complicated, the signal was relatively weak, and the frequency of signal fluctuations was also a little strange and irregular, and it felt as if it was on and off.

Everyone was about to set off to find the source of the signal, Li Guo, who had been staring at the detector screen, suddenly thought of something, slapped his head, and shouted: "I know!" This is Morse code! ”

Li Guo's words surprised everyone, and Long Yi hurriedly asked, "What Morse code?" ”

Li Guo pointed to the red dot flashing on the screen, and said with some excitement: "This signal is actually Morse code!" ”

"Are you sure?"

Li Guo nodded very affirmatively, and said: "Morse code is a kind of signal code that is on and off and off, which can be used in various occasions, whether it is light, sound or electronic signals, Morse code can be transmitted, and in the case of other means of communication, Morse code is often the most effective means of communication." It must be the sea that is dry! He knew how to use the electronic signal of the GPS locator to send Morse code to the outside world, and when he was in the army, he was proficient in this! The sea that Li Guo said refers to Hai Huzi, his real name is Hu Dahai, and he was a comrade-in-arms with Li Guo during his military service.