Lin Ze and his party had been crawling forward on their stomachs for about five minutes, and the tunnel became much wider, and at this time Lin Ze and his party were able to stand up and walk normally.

The trend of the tunnel is downward, and the middle one is not very difficult to walk because of the excavation of the Yin Wind and poisonous rat swarm.

Lin Ze and his party gradually went deep into the ground, and walked for a long time, afraid that it would take an hour or two, but even so, it still looked bottomless here.

(There are many lights in Lin Ze's storage warehouse, and for Lin Ze, they have long been able to achieve night vision in the night.) ）

"Counting the previous ones, we should have walked about three or four kilometers now, right?"

Lin Ze silently calculated in his heart, the depth of this tunnel was far beyond Lin Ze's imagination.

This reminded me of those tunnels in the tunnel war, in order to prevent being found by devils, those tunnels are also cultivated so hidden, and they are also so deep.

However, as Lin Ze and the others continued to go deeper, Lin Ze knew that the previous three or four kilometers were really nothing, and they walked several more three or four thousand miles, but the black-haired rat king who led the way in front of him continued to run forward at a fast speed, and there was no intention of stopping at all.

If Lin Ze hadn't been convinced that this Rat King wouldn't dare to deceive himself, Lin Ze would really think that this Rat King was playing tricks on himself by now.

"It's really deep enough!"

Qu Jingwen was like a roundworm in Lin Ze's stomach, as soon as Lin Ze thought about something, he could immediately sense the thoughts in Lin Ze's head, so he quickly replied with a smile: "Master, be patient, it will be here soon." ”

"Hmm!" Lin Ze replied indifferently, he still had this patience.

However, Lin Ze soon realized that he had said this too early.

Because, the next journey is really far, very far.

Anyway, Lin Ze and they have been under the leadership of the Rat King, and they have been walking, walking, and going......

Anyway, Lin Ze didn't know how far they had gone underground, he could only estimate it by time, according to their current speed, they had walked for nearly an hour this time, which meant that they had walked at least forty miles.

Finally, the Yin Wind Poisonous Rat King in front of him stopped, it turned its head and squeaked at Lin Ze.

Lin Ze immediately understood that this Rat King had already reached the vicinity of its destination, but further along, it did not dare to continue deeper, because, there was a very powerful Earth Walking Dragon inside, and its strength was very strong, according to the Rat King's calculations, the strength of this Earth Walking Dragon was about the same as Qu Jingwen's strength.

Therefore, they did not dare to move on, otherwise, they would just go to their deaths.

For many years, this Earth Dragon has hunted and killed an unknown number of Yin Wind Poisonous Rats.

"Well, then you guys go back first, and we'll explore it ourselves. ”

It's just an innate fifth-layer strength earthly dragon, and Lin Ze doesn't care too much about it in his heart.

Even if the strength of this Earth Walking Dragon surpassed Qu Jingwen, as long as it did not reach the level of a demon beast, Lin Ze could also take it.

Don't forget, Lin Ze still has a killer weapon like the red-haired giant ape by his side.

Qu Jingwen could sense Lin Ze's thoughts, for the sake of safety, he reminded with a smile: "Master, let's be careful, think about it, we are extremely unfamiliar with the environment here, and this earth dragon doesn't know how long it has been living here, it has a clear understanding of the surrounding terrain, one is not good, we will really be ambushed by it, so, master, we should be careful for the second......"

"Hmm. Lin Ze nodded, he knew that this was Qu Jingwen's kindness.

Then Lin Ze directly turned on his sensing power and carefully checked the surrounding movements, so as not to be ambushed by the Earth Walking Dragon.

"I didn't expect that there was an Earth Walking Dragon who had always been innate with fifth-level strength in such a deep place, it was really unexpected!" Lin Ze let out a sigh of emotion from his mouth.

"This is the most interesting and mysterious place in this cave. Qu Jingwen replied with a smile: "There is a congenital fifth-level brute beast hidden here, and it has not gone outside to wreak havoc, so it can be seen that there is definitely some treasure below that attracts it, so it did not appear in the Yin Wind Canyon, and other martial artists also knew nothing about it." ”

"Hehe, it seems that this is it. Well, now that we're here, let's find out!"

For this kind of adventure that is quite mysterious and has the taste of cherishing treasures, Lin Ze likes it very much in his heart.

As a man, a powerful man, he will have a very high desire to explore in his heart, because exploring this kind of thing can often bring a lot of gains, and he can also show his strength.

Of course, in the eyes of ordinary people, this is treasure hunting, and in martial artists, this is called a person's 'good fortune'.

Next, the black-haired rat king of the Yin Wind Poisonous Rat chirped twice, and ran away along the same road;

They continued to carry out Lin Ze's order to collect spiritual materials, and as for the way back after that, Lin Ze had already remembered it.

Especially Qu Jingwen, he never forgets it, and with him, he doesn't need to think about getting lost at all.

"Let's go, let's go in and have a look!" With Lin Ze's words, the group continued to march towards the depths of the cave.

There is no light in the cave, and the human eye is completely invisible, but Lin Ze not only has modern lighting, but their eyes have long been able to see at night, plus now that Lin Ze has turned on the sensing power, it can be said that even Lin Ze can run all the way with his eyes closed.

The road on the road was still inclined all the way to the ground, the road was tortuous, and after walking for nearly fifteen minutes, Lin Ze suddenly stopped.

Because, a huge energy source appeared in Lin Ze's induction power, and it was obvious that their destination had arrived.

After continuing to move forward for less than a thousand meters, Lin Ze and the others directly turned off the lights in their hands, because now they could see with the naked eye that a small red dot appeared in front of the tunnel, and they obviously felt a stream of heat rushing towards them, and the temperature suddenly rose several times, as if a person had accidentally fallen into a boiling hot pool.

"It's still normal just now, how can it increase so much all of a sudden?"

Lin Ze was full of suspicion and took a dozen steps back.

"Master, this should be the light of magma!" Qu Jingwen on the side did have a lot of knowledge, and immediately thought that these red lights and hot temperatures were because there was magma here.

"Well, it's really possible!" Lin Ze quickly reacted.

They had gone dozens of miles deep into the ground, and it was not surprising that they had encountered magma.

"Hey, what's going on?" Lin Ze exclaimed, just now there was a sudden suddenness in front of him, the oncoming heat flow before disappeared, replaced by a burst of coolness, and the surrounding temperature also decreased a little.

What's going on?

Lin Ze and Qu Jingwen tried several times back and forth, and after some research, they were roughly determined that there was an invisible barrier in this position that humans could not see and touch, like a transparent diaphragm, blocking the heat flow in front of them, and only by stepping over this diaphragm could they feel the huge change in temperature.

"Is it an artificially set enchantment, or is it a naturally formed enchantment? How can such a strange thing exist under this underground?" Lin Ze silently guessed in his heart.

"It's amazing, and even I don't know why. Qu Jingwen also had no clue, he had never seen such a thing in the records of Confucianism.

However, the more spooky the place, the more dangerous it is, and of course, the greater the reward.

Therefore, Qu Jingwen reminded: "Master, this situation must be unusual, you go back now, let's go investigate first?"

For Qu Jingwen and them, such a dangerous thing must not be allowed to Lin Ze to go, but they should first go to investigate to see if there is danger, once there is danger, then Lin Ze will leave here as soon as possible, and Qu Jingwen and they will block the danger of some positions.

As for dying if you do this, hehe, for Qu Jingwen and them, dying for Lin Ze is their greatest honor.

"No!" Lin Ze's refusal this time was very crisp and decisive, and he said with a serious face: "Since I have embarked on the path of a martial artist, I must have the courage to explore the unknown, otherwise, I will lose the heart of a martial artist, and in this way, what future do I have." Besides, if we don't move forward, how can we be sure that what awaits us is a blessing or a curse?"

"Okay, I support any decision you make, host. Qu Jingwen then replied, he also knew the firmness of Lin Ze's decision, so he was not ready to explain it completely.

However, he then said: "Master, since you have decided to go, then let us go ahead, in case there is really danger, master, you must have a number in your heart." ”

"Well, I know it in my heart. Lin Ze nodded and agreed.

Qu Jingwen and they were originally puppets under Lin Ze, so they should help explore the way in front.

Besides, Lin Ze has the power of sensitivity, and if there is really danger ahead, he can also remind him in time.

"The little red dot in front of the tunnel is the reflection of the underground fire veins, right?" Lin Ze asked as he moved forward.

"I guess so. Liu Xuan in front replied: "It's just that it's still a little far away, and it's not clear for the time being." ”

The place where the earth fire is located is still three or four kilometers away from Lin Ze, and at such a long distance, Lin Ze's sensing power is not within reach for the time being.

Moreover, in order to ensure the time for the use of the induction force, Lin Ze now turns on the induction force, which is generally only maintained at about 100 meters.

Anyway, this distance is enough for Lin Ze.