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The passage is about a meter wide, like a long spiral jade belt, which extends layer by layer against the inner wall of the pit, and the edge of the passage is constantly rising with flames. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 Walking on it, it is like walking among the flames, especially the feet are still soft, and it seems that it may fall at any time, which makes people tremble.

Fortunately, Nie Kong, Bai Yuqing, and Mu Hongyan were not cowardly people, and although this passage seemed dangerous, it still couldn't stop them.

"Apprentice, how do you know there is a way here?"

Mu Hongyan asked curiously. Now, she finally understood why those who would feel some of the fire spirit power elements were restrained, it turned out that they were all sealed by the stone tablet to condense the long passage in the pit. Before the spirit pattern is activated, if it is touched rashly, it is easy to cause backlash. After all, this kind of forbidden spiritual power element is very different from ordinary spiritual power elements.

"Guess!"

Nie Kong said with a smile.

Therefore, as soon as the words fell, Nie Kong received Mu Hongyan's white eyes: "Hey, if you don't say it, don't say it, it's rare for me to be a master!"

As she spoke, Mu Hongyan muttered imaginatively: "I don't know what kind of place the bottom of the cave is? Before us, no one should have come in here, perhaps, the bottom of the Flame Mountain is the place where the spirit master who opened up the "Hell Fire Hidden Spring" practiced back then, in that case, there are probably a lot of good things in it." ”

Seeing Mu Hongyan's longing expression, Nie Kong did not answer, in fact, although he knew from the remnant soul of the "Ghost Eagle King" that there was this path that could lead directly to the bottom of the cave, but what was hidden underneath, he also did not know, because in the memory of the "Ghost Eagle King", there was not much information about the Flame Mountain.

The three of them went all the way down, and the scene inside the pit became clearer and clearer. Watching the huge fireworks roar up,

Even Nie Kong and they couldn't help but be a little frightened, if that fireball touched this passage slightly, maybe they would all have to be trapeze artists!

After walking for dozens of minutes, a vague outline finally appeared at the bottom of the crater.

"It's almost there!"

Mu Hongya's face was slightly dizzy with excitement, just like a small fortune fan saw a large pile of shining gold coins, waving two small fists, and running down with cheers, "Baby, aunt and grandma, I'm here!" The crisp voice buzzed and vibrated in the pit, causing a huge echo.

The corners of Bai Yuqing's lips curled slightly, and she also subconsciously quickened her pace.

Nie Kong laughed dumbly, and was about to tease her a few words, when the "pet backpack" suddenly trembled...... No, it's not the "Pet Backpack" that is trembling, but the half of the "Colorful Spirit Leaf" in the pet backpack is trembling! Nie Kong hurriedly shifted his attention, and the half of the "Colorful Spirit Leaf" had burst out with a brilliant emerald green glow.

"It's ......"

Nie Kong was puzzled.

At the beginning, after Mu Jinzhu handed over this half of the "Colorful Spirit Leaf" to Nie Kong, he had taken it out and studied it carefully several times. Perhaps because it was only half a leaf, Nie Kong did not show any clues to the "Colorful Spirit Leaf", whether he used his spiritual power or tried it with his heart...... but unexpectedly, in the depths of the flame mountain pit of the "Hell Fire Spring", it had such a big reaction without any warning.

Could it be that there are also "colorful spirit leaves" here?

This thought flashed through his mind, and Nie Kong suddenly perked up.

Although the "Colorful Spirit Leaf" is such a thing, he will not be able to use it for a long time in the future, but looking at the importance that Mu Qingyi and Nie Shengong attach to it, you can know its preciousness, if you give the "Colorful Spirit Leaf" you find to your mother and third aunt to see, maybe you can really understand something.

"Apprentice ......"

Mu Hongyan's coquettish voice came from below, pulling Nie Kong's consciousness back to reality, and with a little excitement in agreeing, Nie Kong also quickened his pace and chased after them.

After a few minutes, the view from the bottom of the crater was completely visible.

The bottom of the cave with a radius of several hundred meters is still as red as blood, but it is very neat. In the center of the bottom of the cave, there is a high platform, the shape of which is like a sea bowl magnified countless times, the "bottom of the bowl" is supported by a thick column, and the fireworks continue to spit out from the "mouth of the bowl".

"Apprentice, Sister Bai, it's going to be the end soon, we have to be careful. Mu Hongyan suddenly slowed down, turned around and admonished, "Who knows if there will be any spirit beasts hidden down here!"

“......”

Bai Yuqing bowed her head silently, but Nie Kong was a little surprised, this sentence was exactly what he wanted to remind Mu Hongya, but he didn't expect that although she looked in a hurry, she didn't relax her vigilance as she imagined.

After walking down for a few more minutes, the soft flame passage was replaced by hard ground, and Nie Kong, Bai Yuqing, and Mu Hongyan finally arrived at the bottom of the cave.

In this vast space, there is no sound except for the "whirring" sound of fireworks, and the ground is smooth as a mirror, and even the figures can be reflected, but except for the column in the center, there is nothing around that can attract attention.

After exchanging glances, the three of them mobilized the spiritual power in their bodies and quietly walked towards the center of the bottom of the cave.

The column was more than 100 meters high, like a towering jade pillar, and judging by its thickness, it would take at least dozens or hundreds of adult men to hold it hand in hand. Standing under the pillar, Nie Kong, Bai Yuqing, and Mu Hongyan couldn't help but feel a little small in their hearts.

The surface of the cylinder is depicted with exquisite and delicate patterns, all of which are all kinds of flame patterns, faintly, from time to time, you can see a flickering red streamer between the lines, as if a breathtaking power is transmitted from it, so that Nie Kong and they can't help but hold their breath.

"Ladders. ”

Soon, a soft cry of surprise echoed through the area, and the three people who were walking around the column stopped and looked at the stairs in front of them in amazement. In this position, the column actually hollowed out a gap about two meters wide and nearly fifty meters high, and the staircase extended diagonally from the bottom to the depths of the gap.

"Let's go!"

Glancing at each other, Mu Hong Ayayu waved her hand lightly, and walked up the stairs first, followed by Nie Kong and Bai Yuqing. There are neither spirit beasts nor medicinal herbs at the bottom of this pit, there is only such a pillar, if you don't go up to take a look, wouldn't it be a waste of the ladder opened up by the original owner of the "Hell Fire Spring"? Besides, the half of the "Colorful Spirit Leaf" in Nie Kong's "pet backpack" is still trembling, so naturally he can't just leave.

Walking up the stairs, gradually going deeper into the inside of the column, when they rushed up the last few steep steps in one breath and came to the flat passage at the top, the three of them were stunned, the passage was only more than ten meters long, and beyond that was the smooth blood-red stone wall.

"So it's gone?"

Mu Hongyan muttered sullenly.

Nie Kong also frowned, according to common sense, such a situation should not occur, otherwise, why dig this staircase and passage in the column?

"Huh?"

After a while, Nie Kong sighed softly, and his face became a little strange. Hearing his voice, Mu Hongyan and Bai Yuqing couldn't help but come to Nie Kong's back, and followed his gaze to see in the middle of the blood-red stone wall opposite, where there was a shallow groove, which was extremely difficult to detect if they didn't get close.

"Sword?"

Bai Yuqing's brows furrowed slightly, and Mu Hongyan was also a little suspicious.

Nie Kong nodded, the shape of the groove was very similar to a small sword, about half a foot long and two fingers wide, exactly the same as the ink sword key in Nie Kong's arms. If this was the case, Nie Kong didn't dare to be sure right away, but the three parts of the hilt, the body and the tip of the sword had a small round and slippery depression, and in the small ink sword, these three parts were slightly convex, which coincided with the depression.

This made Nie Kong very puzzled, according to Meng Tianjun, the little ink sword is the key to open the back door of the "Dark Soul Palace", which means that the back door of the "Dark Soul Palace" should also have this kind of sword-shaped groove in front of him, and the little ink sword can not only open the back door of the "Dark Soul Palace", but also open here?

Or is it that this key can pass through the entire "Hellfire Spring"?

At this time, Bai Yuqing and Mu Hongyan should have also figured out the trick. Bai Yuqing turned around slightly, as if she wanted to leave, but Mu Hongyan shook her head a little helplessly and said, "If there is a key that matches this sword slot, maybe we can go in, it's a pity." Apprentice, let's go! I thought there was something good here, but I didn't expect to come for nothing, and I knew that I would stay in the mountains to cultivate. ”

As she spoke, she moved outward, and after the words fell, Mu Hongyan realized that Nie Kong hadn't followed, and couldn't help but look at her in surprise.

"We're not going to come in vain. ”

Nie Kong smiled mysteriously, and then under the gaze of Mu Hongyan and Bai Yuqing, he reached into his arms and took out the ink-black little sword.

"Huh, this sword is ......."

Mu Hongya was stunned for a moment, her face immediately showed a look of disbelief, and she blurted out, "Key?" Hearing her say these two words, Bai Yuqing's eyes also lit up, and her cold gaze looked at the groove on the blood-red stone wall, and then looked at the inky black sword in Nie Kong's palm.

"Perhaps. ”

Seeing Mu Hongyan's round eyes, Nie Kong couldn't help but quip, "Little master, you have to be prepared, maybe as soon as this passage is opened, a spirit beast will rush out and eat your apprentice and me, and then it will be difficult for you to make such a good apprentice as me." ”

"Go, go!"

Mu Hongyan rolled her eyes fiercely, and couldn't wait to grab the ink-black sword in Nie Kong's hand, and pressed it into the sword-shaped groove of the blood-red stone wall, "If there is really a spirit beast appearing, your master and I will be the first to go." ”

If it is still possible for a spirit beast to appear at the bottom of the cave outside, the probability of a spirit beast appearing inside is basically zero, even if there was a spirit beast a long time ago, it should have died very thoroughly if it was enclosed in this column. This can also be imagined by Nie Kong and Bai Yuqing. When they saw that the inky black sword and the sword-shaped groove were combined, the two of them, like Mu Hongyan, couldn't help but show a look of anticipation in their eyes......