The three of them kept a stone monument all morning, and found nothing.

The sun slowly rose and shone down in the sky.

"I think we'd better rest! There is no way to go on like this! ”

However, just as Lin Feng's proposal was spoken, the sun shone in the sky, shining directly on the golden Japanese character through the layers of leaves, and a burst of intense light reflected back, making Lin Feng and the three of them almost unable to open their eyes.

Lin Feng squinted slightly at the stone tablet that emitted a dazzling light, however, all Lin Feng saw was the twelve big characters of 'Sound Black Thunder Forbidden Land, the former residence of the elf clan'.

Suddenly, a flash of spiritual light flashed, and Lin Feng had a feeling of enlightenment, and jumped up happily.

"Haha... I finally know, Kamon, Mo Yu, I know how to open the stele, let's prepare! Check it out below. ”

Lin Feng's roar made Camon and Mo Yu inexplicable, they didn't understand how Lin Feng, who was still confused just now, found a way in an instant.

"Hurry up, time is limited, if we don't hurry up, I'm afraid we won't be able to open the stele until tomorrow."

Seeing that Mo Yu and Kamon were still in a daze, Lin Feng reminded him again.

Hearing Lin Feng's reminder, Camon and Mo Yu reacted, hurriedly packed their things, and prepared to leave.

I saw Lin Feng standing there alone, and he shouted, "Dark Thunder Forbidden Land, the former residence of the elf clan, open!" The voice fell, and suddenly a palm slapped on the word "sound" of the word "dark", only to see the stone tablet that the three people had been thinking hard about to no avail, at this time slowly opened, revealing a dark stone staircase below that extended downward, with no end in sight.

Lin Feng took the lead and walked down the stone stairs.

Seeing this, Mo Yu and Kamon in the back followed closely behind and entered this underground passage.

As soon as the three of them entered, the stele began to slowly close, and suddenly the cave was dark.

Lighting a torch, Lin Feng looked at the two Mo Yu behind him, and said, "You two follow me closely, be careful!" ”

After a reminder, Lin Feng turned around and continued to move forward.

The stone staircase was very wide, and it was no problem to accommodate three or five people to pass through at the same time, however, Lin Feng felt that this stone staircase had been extending downward, and there was no end in sight, and he didn't know how deep it was.

"How deep is this tunnel?" After walking for about a quarter of an hour, Carmon muttered discontentedly.

Just after Carmon's words fell, a faint light came into Lin Feng's eyes, "Look, there's light ahead, I think we're almost to the end." ”

Lin Feng's words were like a shot in the arm, which suddenly made Mo Yu and Kamon more energetic.

After the three of them continued to walk for a while, they finally reached the underground, which was many times wider than the stone staircase, like a huge square, and every three steps or so, there were inlaid stones of light on the stone wall that emitted a faint white light, illuminating the entire underground square as if it were daytime.

Seeing this scene, Carmon couldn't help but want to keep all these light stones for himself, but in the end he was stopped by Lin Feng.

"Carmon, we're here to find someone, not to rob, don't stiffen the relationship."

Hearing Lin Feng's words, Carmon had to stop stupidly, at this time, he could still tell the severity of the matter.

"Why is there no one in such a big square?" Mo Yu looked at the deserted square and asked puzzledly.

"I think there may be some hidden passages on the stone walls around this square, or we are too late, and the elves have already left here. There are only two possibilities. ”

As soon as Lin Feng's words fell, Carmon asked, "Then what should we do now?" ”

Lin Feng glared at Carmon angrily and said, "What else can I do?" Let's look around first, if there is any mechanism, it proves that my guess is right, and if not, I have to think of another way. ”

"Lin Feng, looking at the appearance of this square, it is estimated that no one has been here for a long time, you look at the dust on the ground, I guess it may be that something happened to the elf clan to cause this!"

"Hmm!" Lin Feng nodded undeniably, expressing his agreement with Mo Yu's words, "However, at the moment, we don't have any clues, this is the only clue, only through here can we find the elf clan." ”

"In that case, let's look for it separately! I'll go here, Lin Feng, you and Kamon will choose a place by themselves, and see if there are any hidden traps or anything like that. ”

Mo Yu said that he would do it, without the slightest ambiguity, and after speaking, he walked to the side and knocked on the stone wall to hear if there was any secret grid or something.

Seeing Mo Yu start to act, Lin Feng casually pointed at Carmon and said, "You go in that direction, Carmon, search carefully, don't miss a place, the clues we finally found can't just be broken." ”

Carmon nodded, walked over to his area of responsibility, and began to get busy.

Suddenly, the sound of knocking on bricks and stones continued to echo in this huge underground square.

"Lin Feng, are you sure your guess is right? Why is it the same sound for a long time, I have knocked on this part twice, and I still haven't found anything. I don't know how long it took to knock in the underground square, and Carmon couldn't stop complaining.

Hearing Camon's complaint, Lin Feng also stopped tapping, and after pondering for a moment, he said, "I dare to conclude that there must be a secret passage here, first of all, the ruins of the fierce thunder should be the place where the elves once lived, but it has now become a ruin. ”

Relieving his breath, Lin Feng continued to explain: "Although I don't know what happened here, but with the strength of the elf clan, I'm afraid that no one in the entire Gran Forest can shake it, but now the elf clan has disappeared, leaving only a piece of ruins, and this square is not damaged in the slightest, there is no trace at all. ”

After listening to Lin Feng's explanation, Carmon was still confused, "Lin Feng, just say what you mean." ”

"I mean, if there's no secret passage or anything like that, there's no way this square hasn't left a trace, so..."

Before Lin Feng's words were finished, Carmon took it and said affirmatively: "So, there must be a secret passage here!" ”

"Hmm!" Lin Feng nodded in agreement.

"However, now that we have knocked on the stone walls of this square twice, we have not found a single clue, are we mistaken?" At this time, Mo Yu also stopped and said suspiciously.

Hearing Mo Yu's words, Lin Feng put one hand on his cheek and pondered, and the scene suddenly became a little cold.

However, the desertion did not last long, Lin Feng suddenly raised his head, looked at Mo Yu and Kamon patted his head, and said in surprise: "We only consider that the secret passage is on the wall, but we actually forgot a very important point!" ”

"Forgot something?" Camon and Mo Yu asked in unison.