In the dark tunnel, there was hardly the slightest light, and Chu Feng's eyes could only see the scene within a radius of a few meters.

Under Xiao Li'er's guidance, Chu Feng and the bear child didn't feel worried, they believed that Xiao Li'er's induction would definitely not be wrong, and if they walked along this tunnel, at least they wouldn't encounter too much danger.

I don't know how long it took, but there was finally a glimmer of light in front of the tunnel. When Chu Feng and the others walked out of the cave passage, they found that this place looked like a huge cave, and there were still dense cave passages in all directions.

How to make a choice in the dense tunnel, Chu Feng still had to rely on Xiao Li'er's induction. Under Xiao Li'er's guidance, they passed through one cave after another, not knowing how far they had penetrated, and in the process they felt heat coming from their front, and as they continued to move forward, the temperature became higher and higher.

"Boy, it doesn't seem right, it's getting hotter and hotter ahead!" the bear child was shocked, and he was a little undecided.

Chu Feng was also puzzled in his heart, the temperature here was much higher than the cave he was in before, and there was a feeling of scorching sun.

Just when Chu Feng and the bear child were both shocked, Xiao Li'er suddenly let out an excited voice: "Little brother, go ahead, that aura is getting stronger and stronger, we are about to arrive!"

"Li'er, what kind of breath are you talking about?"

"Hmm...... Li'er didn't know it, anyway, she just felt a little familiar, and she didn't feel the danger, so she let the little brother follow the breath. ”

"Alright, let's keep walking!"

Chu Feng no longer hesitated, since Li'er was so sure, there really wouldn't be any danger in thinking about it, it was just a scorching temperature. Gradually, there was a trace of light in front of the cave, some of which were like the light of flames, which surprised Chu Feng and the bear child.

"Boy, do you think this tunnel will lead to the fire of the center of the earth?"

"Fire in the center of the earth?"

Chu Feng was stunned, if it really led to the fire in the center of the earth, then there was probably no way out, after all, the location of the fire in the center of the earth was in the depths of the ground.

"Forget it, we can't do that much at the moment, so we can only go and see it first. The bear child didn't say anything more, and walked with Chu Feng towards the bright place in the depths of the cave.

After about half an hour, they finally reached the end of the tunnel, stunned by what they saw.

It was a huge cavern, with uneven ground, dark red stones, and hot air that made my muscles ache. Right in the middle of this cave, it was blazing red and boiling.

"Whew-"

Bursts of dragon groans came from the boiling earth fire, and then one after another dragon qi rushed out and shuttled through the air. Those dragon qi grew more and more, and soon filled the sky above the earth fire.

"Fire Dragon Vein! This is the Earth Fire Dragon Vein!" the bear child exclaimed, then turned his head to look at Chu Feng, and said, "You kid is really lucky for his sister, even if you can encounter the dragon vein in this way, you are expected to break through this time, but I don't know if your physical body can withstand this kind of earth fire dragon vein qi." ”

Chu Feng was silent, his eyes were bright, and his heart was very excited. Since entering the Spirit Realm Trial World, he has been looking for the dragon vein all the time, and he has ventured into danger for this, but he has never seen a trace of the dragon vein, and he did not expect to see the earth fire dragon vein in the deepest part of this cave.

"It's really the Fire Dragon Vein......," Chu Feng muttered to himself, already drenched with sweat in the blazing heat, but he still didn't realize it, and there was only some dragon vein essence shuttling in the air in his eyes.

"Boy, if you look closely at those earth fires, at first glance they look like a river of earth fire, but if you look closely, they are actually more like a fire dragon lying prone on the earth, with the dragon's head on the left and the dragon's tail on the left......"

When Chu Feng heard this, he looked in the direction pointed by the bear child, and it was really as he said, the entire earth fire river was lying on the ground like a fire dragon, and there was a faint terrifying momentum.

"Li'er, you are really my brother's lucky star!"

Chu Feng was extremely excited, he had found the dragon vein, he could finally break through the bottleneck that prevented him from becoming stronger, and leaving the sealing world as soon as possible and returning to the outside world was no longer a plan in his heart, but an ironclad thing.

At this moment, the bear child looked at Xiao Li'er, and Chu Feng also looked at her, and the two of them understood an amazing fact in their hearts at the same time, that is, at a certain distance, Xiao Li'er could sense the storage of the dragon vein breath.

With Xiao Li'er, it would be much easier for Chu Feng to find the dragon vein in the future, after all, with Chu Feng's special physique, it was very likely that he would have to rely on the help of the dragon vein essence in the process of cultivation in the future. And at that time, with Xiao Li'er by her side, the dragon vein will no longer be so difficult to find.

The bear child looked at Chu Feng, he was simply envious, jealous and hateful, the magic of the accompanying bronze bell made his eyes red, the bell body has unpredictable power, and even the little gods who were sealed have all kinds of magical abilities.

"Huh!"

Just as Chu Feng was about to get close to the Earth Fire Dragon Vein to collect the essence of the dragon vein, the bear child suddenly let out a surprised sound, he immediately turned around to look, saw the bear child stretching out his hand and pointing into the distance, and said, "What do you see is that?"

"Ancient Formation Platform?" Chu Feng was shocked, looked at the two-meter-sized disc sitting on the ground in the distance, and said, "There is a formation pattern engraved on it, but I don't know what kind of ancient formation pattern it is, if it is a spatial formation pattern, we may be able to leave this place from there!"

"Boy, we were really lucky, not only found the dragon vein, but also found the teleportation ancient array platform. You can see that those formations on it are somewhat similar to those formations at the entrance of the Spirit Realm, that is to say, they must be spatial formations, but I don't know where the spatial coordinates are, but as long as it doesn't lead to the fifth area, then we can get out of trouble!"

Chu Feng nodded and said, "You go first to see if the formation pattern on the formation platform can be automatically activated, and I'll go collect the dragon vein essence first!" After speaking, he didn't wait for the bear child to respond, and walked towards the earth fire dragon vein.

The two of them divided their labor, the bear child observed the formation, and Chu Feng rushed towards the Earth Fire Dragon Vein. In this process, Chu Feng's essence and blood in his body were surging, and he used the spiritual skills of the Li Shan tribe to urge the essence and blood to walk all over his body, so as to resist the blazing heat.

The temperature here is too high, and it's good to be far away from the Earth Fire Dragon Vein, but as the distance gets closer, the high temperature is enough to roast people's skin. Even with Chu Feng's powerful body, when the spiritual magic was all over his body, he still felt that his skin was burning and unbearable, the pain was incomparable, and the sweat was rolling down.

"Boy, you have to be careful, uncle doesn't want to eat roast dragon meat, hehehe......" The bear child stood on the side of the ancient formation platform and sighed, laughing cheaply, and then turned around and pouted his ass and began to observe the formation.

On Chu Feng's shoulder, Xiao Li'er was very nervous, but not because of herself, but because she was worried about Chu Feng, for fear that he would not be able to withstand this terrifying temperature.

"Little brother, will you let Li'er help you collect the essence of the dragon vein?"

"I'll come by myself, my brother can still hold on!" Chu Feng gritted his teeth and walked forward, there was still a distance of more than a thousand meters from the Earth Fire Dragon Vein, but his body was already red, like calcined metal, bearing the terrifying high temperature.

"Little brother, if you want to collect the essence of the dragon vein, you must get close to the dragon vein, those conjured essences are all above the dragon vein, you can't get close, otherwise you will be burned to ashes. Xiao Li'er said very seriously, and then jumped off Chu Feng's shoulder and stretched out his hand to stop him.

At this moment, Chu Feng felt that his whole body was about to melt in this terrifying high temperature, this temperature was too terrifying, and the distance was still a kilometer away and it had already reached the limit of the physical body's endurance, if it was really close to the Earth Fire Dragon Vein, I am afraid that even gold and iron would have to melt into liquid.

"Li'er, can you absorb the dragon veins into your body, and then guide them out to your brother? If you can't, you can't help your brother. ”

"Little brother, Li'er can urge the associated bronze bell!" The little girl looked up at her delicate little face, her big eyes smiled like a crescent moon, she stretched out her hand and pushed Chu Feng: "Little brother, you go back quickly, Li'er is not afraid of high temperatures, I can help you collect the essence of the dragon vein!"

Just when Chu Feng was still hesitating, the accompanying bronze bell in his body flew out with a "dang" sound, suspended above Xiao Li'er's head, and then flew towards the Earth Fire Dragon Vein with her.

In this process, Chu Feng's heartbeat was very nervous. Although Xiao Li'er is a deity in the accompanying bronze bell, he still can't help but worry, after all, the temperature of the Earth Fire Dragon Vein is too terrifying, and the temperature of this flame is probably difficult for even the supernatural masters of the outside world to bear.

Soon, Chu Feng found that his worries were superfluous, because as he got closer and closer to the Earth Fire Dragon Vein, the accompanying bronze bell was covered with white silk light, enveloping Xiao Li'er, and in a moment, he came to the edge of the Earth Fire Dragon Vein.

The vacuum at the edge of the Earth Fire Dragon Vein was distorted by the terrifying heat, and you can imagine how terrifying that temperature was. However, Xiao Li'er was not affected in the slightest under the falling silk of the accompanying bronze bell, she was like a happy little angel, with her big pure eyes curiously looking at the surging and boiling dragon veins and earth fire, and let out a joyful laugh.

"Little brother, these flames are so beautiful!"

Xiao Li'er's crisp and immature voice came from afar, and then Chu Feng saw the accompanying bronze bell above her head walking towards the dragon vein earth fire, this scene frightened his heart suddenly, and he almost exclaimed.

However, when Xiao Li'er entered the dragon vein earth fire, those flames automatically gave way, and clusters of elf-like incarnations danced happily around her.

"You are not allowed to run, Li'er will catch you and give you to the little brother!"

Xiao Li'er was a little angry from the Earth Fire Dragon Vein, but because the flames were too hot, Chu Feng couldn't see her anymore, but he knew that she was safe, so he put his mind at ease.

There were many condensed dragon vein essences shuttling in the flames, and Xiao Li'er controlled the associated bronze bell to catch them, but found that those dragon vein essences seemed to be alive, they dodged quickly, and it was difficult to catch.

The associated bronze bell was sucked dozens of times under Xiao Li'er's control, and I don't know how many flames were sucked into it, but it didn't absorb the essence of the dragon vein.

"Don't run, Li'er is angry!"

The little girl's eyebrows appeared, the talisman flickered, she was really angry, pouting angrily, the talisman in the center of the eyebrows flew out, shocking out of inexplicable power, accompanied by the sound of the bronze bell "dang", the bell body tilted, and a terrifying whirlpool appeared at the mouth of the bell, like a cosmic black hole, a large piece of dragon vein earth fire was sucked into a fine light, so that a vacuum appeared within a radius of hundreds of meters, and the dragon vein essence that shuttled in it was also inhaled.

"Ah, I finally caught you, see you still running, giggle......" The little girl giggled, wrinkled her little nose, and then turned around and ran out of the Earth Fire Dragon Bed, running directly towards Chu Feng.