(The tip may be a shortcut or a misunderstanding)

Therefore, the incident happened so suddenly that Lei Su and his two men had no time to bring along the Rakshasa tribe and the demon group, so they had no choice but to sacrifice themselves, Zong Fa and Lan Feng to go ahead.

The mountains under the clouds and mist were changing, and Lan Feng and the two saw that a group of green bean sprouts suddenly appeared in the loess Gobi, like an oasis in the desert.

"Is that Cuiyun Mountain?" Lan Feng murmured.

Hai Yesheng said: "Yes, I came here once with my father back then, and this Banana Cave in Cuiyun Mountain is the cave of Princess Iron Fan."

Lei Su said: "Brother Hai Yesheng has been here before? Why don't I remember?"

Hai Yesheng smiled and said: "I was young back then, and my appearance is very different from now. It makes sense that I don't recognize Brother Lei."

Lei Su smiled and said nothing. When he saw that he had reached the top of the mountain, he stopped and said, "You two, follow me to Luoyun."

Lan Feng and the others followed Lei Su to the top of the mountain, and they saw Cuiyun Mountain standing in the center of the mountains. The mountains were full of water vapor, which formed a sharp contrast with the surrounding loess.

Bingshuang said: "Our Rakshasa clan is gathered here now. The loess here is all over the fields, wrapping the green clouds and mountains. There is also the Flame Mountain blocking the front, which actually blocks the aura of my Rakshasa clan.

However, now that the Flame Mountain has been destroyed, I, the Rakshasa clan, may have to find another place to live."

Lan Feng looked down the mountain and said, "If you two don't mind, you can go and live in peace in our Shituo City."

Lei Su said: "This... let's wait until the little master wakes up."

Seeing that he was still hesitant, Lan Feng didn't say much: "In that case, Brother Lei Su, please lead the way."

Lei Su nodded, and he, Bingshuang and Lanfeng went straight down to the top of the mountain and listened in front of a banana tree on the mountainside.

Strangely enough, this banana tree does not grow on the ground like ordinary banana trees. Instead, its stems and leaves are pulled out from a piece of bluestone rock.

The leaves are divided into five pieces, showing the sign of the Five Yins, three long and two short, and the shape of a banana leaf is carved on one side of the bluestone.

"Wait a minute, everyone," Lei Su walked up to the blue crystal stone, put his hand on the banana leaf and injected a black spiritual energy.

The five-yin banana leaves were exposed to the black energy and immediately withered, revealing a tunnel leading to the crowd.

Seeing this, everyone walked in one after another, and Bingshuang said: "This is the ghost banana. It was originally born on the edge of the waterfall in the Yin and Yang world, and it was paired with the peach tree.

Later, in order for the Rakshasa clan to practice cultivation, our king stole it from the Yin and Yang Realm and used it to form the Banana Cave.

You can see that there are abundant clouds and mist in the mountains. This is also because the yin energy of the ghostly bananas condenses the water vapor.

Although Cuiyun Mountain can be called an oasis in the thousands of miles of loess, it is actually the place with the heaviest yin."

Lan Feng, as a phoenix-blooded phoenix, was not very sensitive to this Yin Qi, but there was a windy aura in the cave that caught his attention.

Not long after, everyone walked from the tunnel into a hall. In this hall, weeds were scattered all over the floor. In the middle stood a stone tablet in the shape of a banana leaf, with 216 rectangular grooves evenly divided into two groups.

They are listed on the upper and lower ends of the stone tablet.

On the other side of the hall, there is a door that is ajar.

Lei Su pointed to the door and said, "That is the princess's boudoir, and it is also the place where the little master was born."

"Is the banana fan placed inside?" Lan Feng asked.

Bingshuang shook her head, said "later", walked into the boudoir, and took out a stone box from inside.

"The banana fan was locked in this stone tablet by the princess, and the key to opening the stone tablet is the talisman in this stone box."

Saying that, Bingshuang opened the stone box.

Lan Feng raised his hand and pulled out the talismans from the stone box and floated them in the air. He saw that these one hundred and eight talismans were all made of banana leaves, with the talismans painted with red blood and hung with black ropes.

The symbols drawn are all ordinary unblocking talismans, there is nothing strange about them.

At this time, Lei Su pointed at the one hundred and eight talismans and said: "Lanfeng Demon King, please see, there is a fire cloud mark on the back of these one hundred and eight talismans. There is a gap on the side of the stone stele, which can be used to seal the talismans."

Send it in.

It’s just...it has to be sent in all at once.”

"What do you mean?" Lan Feng asked.

Lei Su walked to the stone tablet, called for a talisman and put it into the gap.

Unexpectedly, as soon as the talisman was halfway into the gap, it bounced out from the gap.

Then, Lei Su stacked the one hundred and eight talismans together and put them into the gap. After a while, the gap was closed.

"Can Lanfeng Demon King see it? The next step is to place these talismans in these rectangular grooves through physical detection. Every time one is placed, the corresponding rectangular groove will light up, but we cannot

When you see this talisman, is it the fire cloud side or the talisman side?" Lei Su said.

"The princess once left a message: The sun in the sky disappears, leaving only the shadow on the earth. If the fire and clouds match each other, then the stone tablet will be opened. It should mean that after the talisman is put in, the number of talismans showing fire clouds must be the same above and below.

But we have tried to turn all the talismans into fire clouds, arranging fifty-four on top and bottom, but the stone tablet still did not respond.

Moreover, as long as this talisman enters the stone tablet, it can only be moved and cannot perform other operations, and the order of the talismans will be disrupted."

Having said this, Lei Su started to point his hand at the one hundred and eight rectangular grooves under the stone tablet.

After a while, the groove began to reverse as a whole.

"The only thing we find strange is that the one hundred and eight grooves below can be turned over as a whole." Lei Su said.

"Hiss..." Lan Feng frowned and thought carefully.

"According to what you said, we can temporarily get two pieces of information. First, the number of upward talismans on the Fire Cloud Seal must have a specific number.

Second, this reversible mechanism must be the key to cracking it."

At this time, the gap opened again, and these one hundred and eight talismans were sent out.

Lan Feng took it in his hand and murmured: "The sun in the sky is gone, only the yin in the earth is left. The yin in the sky, the yin in the earth..."

The yang in the sky is the power, and the yin in the earth is the evil. Lanfeng holds the talisman in his hand and puts them in the air one by one, until he stops on the thirty-sixth one.

"Tiangang is thirty-six and earth evil is seventy-two. If the sun of the sky is not visible, it is a disaster."

The literal meaning of the talisman is positive, and the fire cloud is negative. These thirty-six talismans should have the fire cloud side facing up..."

Although everyone heard that Lan Feng solved the first problem in a few words, the second problem that followed was the real difficulty.

It's like a blind man got one hundred and eight pieces of paper, thirty-six of which were face up, and he didn't know where these thirty-six were.

In this way, the blind man should divide the papers into two parts, and make the paper on the opposite side of each part equal.

Is it possible?

Lan Feng couldn't figure out the mystery after much thought, so he could only put the one hundred and eight talismans into the stone tablet and slowly test it.

But this kind of testing is tantamount to finding a needle in a haystack. The chance of guessing the match is too small.

"Lanfeng Demon King, this is what I told you.

It’s really difficult to get enough luck to split the eighteen cards equally.” Lei Su murmured to the side. As the leader of the Rakshasa clan, he wanted to wake up the red boy more than anyone else at this time.

They were all anxious, but the mechanism left by this stone tablet blocked them abruptly.

Lan Feng fiddled with the one hundred and eight rectangular grooves on the lower layer in front of the stone tablet. He still felt that the key to cracking this mechanism lay in this flip layer.

There are obviously only one hundred and eight talismans in total, so why double the number?

Now we know that there are thirty-six talismans that should be turned to the Fire Cloud Seal side, but how to divide them equally into upper and lower parts without disturbing the order...

Several people looked at each other in front of the stone tablet. The one hundred and eight talismans seemed to have become an unsolvable puzzle. Except for luck, no one could think of a way to accurately divide the thirty-six talismans.

But from another perspective, it is impossible for Princess Iron Fan to turn the secret of opening the mechanism into a method that relies only on luck.

"Twice as many grooves and flips, what are these two mechanisms intended for..." Lan Feng murmured, "If we flip the bottom over, then the front becomes the back."

"Wait a minute..." Lan Feng seemed to have thought of something.

"Brother Lei Su, Princess Iron Fan only said, 'When the fire and clouds match, the stone monument will be opened.' Is that right?" Lan Feng asked.

Lei Su nodded and said, "Yes, but isn't the number of thirty-six Heavenly Gangs the necessary condition you just mentioned?"

Lan Feng said: "Yes, but if this is the case, can I understand that when I put it into this stone tablet, there must be thirty-six talismans on the side of the fire cloud, but if I turn over the one hundred talismans below,

After eight grooves, the number of upper and lower fire clouds will be the same."

Lei Su felt a little headache after hearing this, but Bingshuang beside him seemed to understand.

"What the Lanfeng Demon King means is that when we put the talismans into this stone tablet, we had already turned thirty-six of them into fire clouds, so when we put them in, we had already satisfied the first two sentences of the princess's message: 'The sun is gone.

, leaving only the Yin of the earth. And we flipped the grooves below to correspond to 'the fire and clouds are in harmony, the stone tablet will be opened', is this what it means?" Bingshuang said.

"Not bad," Lanfeng said, holding the stone tablet with one hand.

"However, even so, there is no guarantee that the number of Fire Cloud Talismans in the upper and lower fifty-four sheets is the same." Hai Yesheng said.

Lei Su was also muttering to the side: "Isn't this the same as what I didn't say? You only have one hundred and eight pieces in total, divided equally into two groups of fifty-four pieces each, even if the thirty-six Fire Cloud Talismans are in the groove above,

But there are fifty-four pictures below, and you can’t match them even if you turn them over.”

Lan Feng smiled after hearing this: "Actually, you have all entered into a misunderstanding. Who said that I must divide it equally and put fifty-four cards below?"

"The fire clouds match each other, that means the upper and lower sides..." Lei Su was stunned when he said this. Yes, as long as the thirty-six talismans are placed on the top of the stone tablet, and the fire clouds are on the upper and lower sides.

The upper and lower talismans only need to be equal. It does not say that the total number of upper and lower talismans must be the same.
Chapter completed!