The experience has become a task, which makes many disciples feel deceived.

The dean did not reveal why he was looking for the black-tailed fox, but only told everyone to be careful and safe, in groups of several people.

The two disciples of the Soul Sect did not enter the valley, and among the four disciples of the Dan Sect, only Lin Feng and another person acted with the disciples of the Martial Sect.

At night, the Black River Valley is a little eerie, and the cries of all kinds of beasts and birds are particularly harsh.

"Follow me, don't run around. ”

Lu Yu didn't stay with most people, but took Lin Feng to walk alone.

"Where have we been?"

Lin Feng was a little uneasy, the unknown darkness always gave people a sense of fear.

"Have you heard the legend of the Black River Valley?"

Lin Feng hesitated: "I heard them on the way, this seems to be a burial ground, many people died in the war in the past, and they were all buried here, it feels strange and scary." ”

Lu Yu said: "The Black River Valley is located in the Lingquan Mountain Range, which happens to be between the seven cities in the western part of the Tianyue Kingdom, between Quancheng and Wucheng. ”

Lin Feng was stunned and said, "How do you know?" Oh, I almost forgot, you used to be the young city lord of Wu City. ”

Lu Yu glared at him and continued, "Legend has it that a long time ago, there was a big battle between Quancheng and Wucheng in order to snatch a treasure. ”

Lin Feng said curiously, "What treasure?"

Lu Yu looked around and said in a low voice: "My father mentioned to me back then that there was a master in the past who was ambushed when he was carrying treasures through the Lingquan Mountain Range. The soldiers of Quancheng and Wucheng who shot out, numbering tens of thousands, ended up with rivers of blood, and the master died in battle, but the whereabouts of the treasures he carried were unknown. ”

Lin Feng was shocked: "You mean, that battle was not between Quancheng and Wucheng, but a joint ambush of that master, and finally the whole army was annihilated?"

Lu Yu said: "The outside world has always thought that it is a battle between the two major cities, and only a few people know about it. My father once analyzed that the treasure was probably in the Black River Valley, but he never found its whereabouts. ”

Lin Feng frowned and said, "The dean asked us to find the black-tailed fox, wouldn't it be for that treasure?"

"Who knows?"

Lin Feng said excitedly: "Since we are here, why don't we look around for twenty days?"

Lu Yu said: "I have this intention, now let's leave everyone's sight first, and then lay out the formation, I want to search for every move around." ”

"Formation? Pass me both hands too. ”

Lin Feng's eyes lit up and he was excited.

"Want to learn?"

"Yes!"

"Let's go, then. ”

In the night, there were several pairs of eyes behind the two, staring coldly.

Lu Yu seemed to be aware of it, but he didn't say anything, and took Lin Feng over a mountain and disappeared into the darkness.

The owner of those pairs of eyes did not follow, because everyone was together, and it would be too dazzling to act alone.

Lu Yu found a forest with the most dense vegetation and began to set up a formation here.

Lin Feng looked excited, helping to pick up stones, plant flags, and collect various array materials.

"In the mountains and forests, the ** array is the easiest, because we are Jingwu Soul and have a lot of resources to use. But the formation we are going to lay out tonight is not a ** formation, but a small five-element formation, the essentials of which ......"

Lu Yu explained carefully, demonstrated by himself, and completed the small five-element array with Lin Feng.

"The formation is very important for alchemy, because some pills cannot be refined in the Dan furnace, and it is necessary to use heaven and earth as the furnace and all things as the supplement, so it involves the formation. ”

Lin Feng exclaimed: "How do you know everything, it's just amazing." ”

"Don't pat yourself on the back, go to the trees to keep an eye on the trees, and protect the Dharma for me. ”

Lin Feng smiled and jumped on the branches, paying close attention to the situation around him.

Lu Yu sat in the small five-element array, running the two soul tricks of the green grass and the thousand trees into a forest, and the small grass martial soul automatically appeared, swaying above his head, very leisurely.

Lu Yu takes Xiaocao as his eyes and Qianmu as his ears, and his perception extends in all directions, and combined with the small five-element array, the search range can be greatly improved.

In the mountains and forests, there are many birds, beasts, insects and snakes.

Lu Yu's little grass eyes and ears of a thousand trees are like clairvoyant ears, as long as the area covered by grass and trees, you can see it clearly.

One mile, three miles, and five miles, Lu Yu's perception was constantly extending, and the grass martial spirit above his head was shaking faster and faster, constantly absorbing the aura of heaven and earth in the night sky and the forest.

In a moment, Lu Yu's perception extended ten miles away, and a gloomy and cold aura caught Lu Yu's attention.

It was the direction of the Black River Valley, and the inexplicable power of the cold and yin evil was formless and colorless, revealing weirdness.

As soon as Lu Yu's perception approached, he felt like falling into an ice cave, and even his heart was half cold.

"It's ......"

Lu Yu was shocked, opened his eyes and got up, looking at the hinterland of the Black River Valley from afar.

The night breeze is blowing, the birdsong is crisp, the empty mountains are quiet, who is calling you?

Above Lu Yu's head, the grass martial soul glowed with a faint green light, and the Ten Thousand Magic Pools on the third leaf flashed and disappeared, as if he sensed something.

"Come again. ”

Lu Yu sat down, this time it was a directional search, focusing on the situation in the hinterland of the Black River Valley.

The perception soon crossed the ten-mile boundary, and there was a river there, the water of which was muddy, like a black river, and had the smell of decay.

Lu Yu's perception went up the river, with lush vegetation on both sides, piles of corpses and bones underground, and various poisonous insects and snakes infested from time to time.

"That's where rivers of blood flow. ”

Lu Yu searched carefully, and the spread of his perception was slowing down, as if he was repelled by some kind of evil power.

"There's something weird about this place. ”

Above Lu Yu's head, on the grass martial spirit, the soul power line was expanding and swaying, and the Ten Thousand Law Pool was clearly visible, prompting Lu Yu's perception to increase exponentially and continue to move forward.

The Black River Valley is huge, but the area where there were mountains of bones back then was only a few miles away.

There was an invisible evil force shrouding the area, which felt like a ghost, and a bit like a grudge.

After all, in the past, there was a river of blood, a mountain of corpses, and too much resentment.

If the average person's perception is close there, it will be affected.

Lu Yu is a soul master, and the soul power line of Xiaocao Martial Soul and the Ten Thousand Law Pool are extraordinary, helping him overcome some difficulties.

After continuing to search for half an hour, a bone bead suddenly appeared in the Ten Thousand Law Pool, which happened to be embedded in a thigh bone, and it was not visible from the outside.

This bone bead does not have any fluctuations, and its perception cannot be detected, and I don't know how Wanfa Chi found it.

"Could it be that?"

Lu Yu was a little excited and wanted to find it immediately, but it was strange that Wan Fachi actually opposed his idea.

"Shouldn't you approach at night?"

Lu Yu couldn't think of a more reasonable explanation, with his well-informed previous life, he could vaguely think that there was something strange in the Black River Valley, the yin qi was too strong at night, his current realm was not enough, and he was a quiet martial spirit, his sex was yin, and he was easy to recruit ominous.

During the day, the sun is shining and the yang energy is at its peak, making it more suitable for those eerie places.

Thinking of this, Lu Yu stopped searching, got up and called Lin Feng to his side, and taught him some formation basics and the way of alchemy.