Lu Chen stepped into the forbidden mine, although he didn't see Huo Lao, but he wasn't sure if Huo Lao would suddenly appear, so he didn't use the power of sea knowledge to explore the mine, and the section of the forbidden mine road had been carefully checked by his operation method, and there was no spirit stone in the stone wall.

Continuing to walk towards the depths of the forbidden mine, suddenly Lu Chen's eyes flickered, and when he looked closely, he saw a thin old man standing in front of him, who else could he be besides Huo Lao.

"Where have you been these days, even if you don't come to the mine to search for spirit stones, let me know if you are refining the dark red spark. You only refined a dark red spark last time, and if you haven't made any progress in the past few days, don't blame me for not being merciful and blasting you out of the mine right now. As soon as Huo Lao came up, he said with a slashed head and a face.

Lu Chen had already prepared, and as soon as Huo Lao's words fell, Lu Chen threw the empty purple gourd over.

I saw the purple gourd volley through an arc and fell into the hands of the old fire. The moment he caught the purple gourd, Huo Lao's body trembled slightly, and a trace of surprise flashed in his eyes. The purple gourd contains dark red sparks and the weight is naturally different when it is empty, although Huo Lao did not open the plug at this moment to see what happened, but the moment the purple gourd was in hand, Huo Lao knew that the gourd was empty.

With a pop, Huo Lao unplugged the gourd and looked into the gourd, and sure enough, as he expected, there was not a single dark red spark.

"Boy, are you going to find a random place in the door and dump the dark red sparks inside the gourd?" asked the fire elder in surprise.

Hearing this, Lu Chen said slowly: "Although I don't know what the dark red spark in the gourd is, but since the dark red spark can even burn the true qi, I naturally understand that if the dark red spark is poured out casually and not refined, the consequences will definitely not be a good thing, how can I cause trouble for myself." "Although each of the dark red sparks in the gourd is very small, Lu Chen can clearly feel the power of the dark red sparks, if he pours out the gourd and leaves it alone, I am afraid that as long as one dark red spark can spark the entire cave peak of the mine hall.

"That's right. Huo Lao nodded. Immediately, his eyes widened, and he looked at Lu Chen in surprise, and said, "So, in just a few days, you have refined all the remaining one hundred and nineteen dark red sparks?"

"Naturally. Lu Chen said.

As soon as Lu Chen said this, a gleam flashed in Huo Lao's eyes. Lu Chen suddenly thought of something, and asked, "Why do you want to refine these dark red sparks?" As for what the dark red sparks are, Lu Chen didn't bother to ask again, it is estimated that after asking, Huo Lao will definitely ask him how he refined the dark red sparks.

"Didn't you notice that the temperature in this forbidden mine is a little hotter than in the other mines?" asked Huo Lao.

Lu Chen nodded slightly, he had discovered this from the first time he stepped into the forbidden mine. It's just that the fire aura in the forbidden mine seems to be more intense than other mines, Lu Chen was only strange in his heart at the time, obviously the fire aura in the forbidden mine is thicker, but the spirit stones contained in it are rarer than other mines, so he didn't take the temperature matter to heart.

"Does this have anything to do with refining the Dark Red Mars?" Lu Chen asked.

Huo Lao thought for a moment and said, "The reason why the temperature in the forbidden mine is high is because of these dark red sparks. As long as you refine a dark red spark, the temperature in the forbidden mine will drop a little, and it will be more comfortable for Huo Lao me to stay in the forbidden mine. If it weren't for that, how could I have promised you that as long as you can refine a dark red spark, you can mine spirit stones in the forbidden mine for a day. ”

Hearing this, Lu Chen was slightly stunned, thinking that Huo Lao wanted him to refine the dark red spark to deliberately make things difficult, but he didn't expect that there was such a relationship. It stands to reason that a martial arts monk who steps into the inner realm can survive the cold and heat, but the temperature generated by the strong fire aura needs to be offset by the operation of his own true qi. If you are not a person who cultivates fire attribute exercises, it is indeed not an easy thing to be in the forbidden mine path with a strong fire aura.

As soon as he thought of this, Lu Chen's last bit of dissatisfaction with Huo Lao disappeared. After thinking for a while, Lu Chen said: "Refining dark red sparks is not a difficult thing for me, Huo Lao, you fill this gourd with dark red sparks, and I will take it with me to continue refining." ”

First, refining and destroying the dark red Mars can obtain strange flame energy from it, and Lu Chen is convinced that only by integrating more strange flame energy into his sea of knowledge can he find out what secrets the strange flame energy is. The spirit stones mined in the mine cannot be used, and refining and destroying the dark red spark is almost the only way to obtain strange flame energy. Of course, using the little gluttonous devouring fire aura into the body and directly stripping the aura attribute in the body can also obtain strange flame energy, but the efficiency is too low compared to refining spirit stones and refining dark red sparks. Besides, if he can help Huo Lao a little bit, Lu Chen doesn't mind.

"Boy, since you want to help, I won't be polite to you. Huo Lao said with a smile.

Lu Chen smiled slightly, and motioned for Huo Lao to quickly fill the purple gourd, without saying anything about refining the dark red spark that was also beneficial to him.

"You wait a minute, I'll get ready. Before the words fell, Huo Lao's figure had disappeared in front of Lu Chen's eyes.

What Lu Chen was waiting for was this moment, it would take a while for Huo Lao to fill the purple gourd with dark red sparks, and he just used the time when Huo Lao had no time to take care of him to release the power of knowing the sea to search for spirit stones in the forbidden mine, which was why Lu Chen wanted to refine all the dark red sparks in the gourd and then come to the forbidden mine.

The mind moved slightly, and a mist, sacred and majestic dragon gate suddenly appeared at the center of Lu Chen's eyebrows, and the dragon gate of knowing the sea slowly opened as soon as it appeared, and then the power of knowing the sea poured out from the dragon gate, like a round of bright moon escaping the light shining on the heaven and earth, and the power of knowing the sea shrouded around the mine.

Just as the power of knowing the sea was extending around, suddenly a touch of surprise flashed in Lu Chen's eyes. With himself as the center, the power of knowing the sea can envelop ten zhang square circle with his mind. However, at this moment, his power to perceive the sea was like a sponge, compressed into a ball by an invisible force, and it could only extend a distance of three feet, and it could not be like an extension.

Since entering the mine hall, this is the second time that Lu Chen has used the power of sea knowledge. The first time was when he first entered the mine that Jiang Feiyun was in charge of, he used the power of sea knowledge to explore the mine, and there was no abnormality at that time. Suddenly, Lu Chen seemed to think of something, there is only one forbidden mine in the Lingshi mine, and the forbidden mine is so unique, there must be another reason!

Lu Chen stood in the middle of the road, and the mine road could be used by two people to walk side by side, so the power of sea knowledge that could only extend three feet could not even touch the stone wall of the mine at this moment, and Lu Chen could only take the initiative to walk towards the stone wall.

With a snap, his palm pressed against the stone wall, and then Lu Chen's body trembled slightly. As soon as the palm of the hand touched the stone wall, the power of knowing the sea began to pass rapidly. The use of the power of sea knowledge is not without consumption. And the power of sea knowledge is very peculiar, and the speed of consumption also depends on the situation.

Once the power of sea knowledge is used, the sea knowledge is always consumed. If the power of sea knowledge extends in the void air, it will disappear at its lowest. If it is extended into a liquid such as a water stream, the consumption increases accordingly. Solids that extend into rocks consume faster. However, these costs are not worth mentioning at all compared to using the power of the sea to use the fire proverb to cast the flame dragon. However, at this moment, although the consumption rate of Lu Chen's sea knowledge power was not as fast as launching a powerful flame dragon, it was also quite terrifying.

According to the estimation of the consumption rate at this moment, his knowledge of the sea is only enough to last for a quarter of an hour, and it can only be explored three feet into the stone wall of the mine, and a little farther away, Lu Chen's power to know the sea is not enough.

Thinking of this, Lu Chen didn't delay any longer, and hurriedly explored the stone wall of the mine. During the investigation, Lu Chen divided a wisp of his mind to pay attention to the movements around him, and once Huo Lao returned, he immediately put away the power to retract the sea knowledge and close the sea knowledge dragon gate, so as not to expose the secret of opening up the sea knowledge in the Qi Sea Realm.

At this moment, the power of knowing the sea extended into the stone wall of the mine, although Lu Chen's gaze could not penetrate the rock, he could see any detail in the rock within three feet, but Lu Chen did not find anything abnormal in the rock. With his footsteps open, Lu Chen continued to explore along the stone wall of the mine.

I don't know how long it has been, but Lu Chen has not found anything in the stone wall of the mine. On the contrary, the power of the sea was overconsumed, and he felt that his head was groggy, and his two eyelids were equally heavy, and a strong sense of tiredness came from the depths of his mind, making him want to fall into a deep sleep.

"Wake up!" Lu Chen shouted in his heart, biting the tip of his tongue to make himself more sober. The power of knowing the sea is like a low tide, and he takes back the knowledge of the sea, and the dragon gate of knowing the sea is also closed. And at this moment, Huo Lao didn't know where to go, and walked towards Lu Chen with a purple gourd in his hand.

Glancing at Lu Chen, Huo Lao asked in surprise, "Boy, what happened during the time I was away, why did you look so weak?"

"I can't find the spirit stone depressed. Lu Chen naturally wouldn't tell the truth, and casually pulled out a reason.

Huo Lao laughed, as if he knew that Lu Chen was very tired, but this time he didn't hit Lu Chen again, but handed the purple gourd into Lu Chen's hands, and once again admonished: "The gourd is already full of dark red sparks, you have to be careful." ”

Lu Chen nodded slightly, took the purple gourd, and turned around to leave the forbidden mine. As soon as he came, Huo Lao had already appeared, and at the same time, the gourd was also in his hands. Second, there is not much power left to know the sea, even if you have the heart to investigate the mystery of the forbidden mine, you have to wait for the sea to recover as before. After some inspection, although Lu Chen found no abnormalities, he became more and more sure that there was another mystery hidden in the forbidden mine. Determining this, Lu Chen is not in a hurry, and will wait until the dark red sparks in the gourd are refined and extinguished.