Lu Chen had flown back and forth on this small lake hundreds of times, and it was finally confirmed that this was a very deep formation.

Lu Chen deeply realized the importance of the formation talisman, otherwise even if he knew that there were heavy treasures in the Dragon Secret Realm, he could only give up.

The formation on the small lake here is a rare seventh-order formation, Lu Chen according to the record of the "Star Rune" law rune, combined with his own understanding, kept practicing and calculating, just like that, a month passed unconsciously, Lu Chen studied every day and night, trying to break the formation over and over again, at this moment his eyes were bloodshot, his expression was haggard, but his face was excited.

"Haha, I found it!" After a month of hard research, Lu Chen finally found the magic eye of this array, which was the most inconspicuous of the accompanying grass groups next to the snow lotus.

At the moment when Lu Chen raised his hand to pull out the small grass, the entire cave space emitted a shocking echo, and the mountains shook in an instant, and a huge whirlpool appeared on the surface of the small lake, and a large amount of spiritual energy rolled out of it!

A large amount of aura quickly flowed out of the lake, because the aura was so strong that it even produced a faint halo of colorful light, and these halos flowed one after another, forming a magnificent rainbow above the cave!

In an instant, the concentration of aura in the cave increased several times again!

"Childe, there must be some treasure in this lake, otherwise there would not be such a strong aura of heaven and earth. ”

"Well, Yingying, you wait for me here, I'll go down and have a look. ”

After speaking, Lu Chen plunged towards the lake one by one, with his cultivation, even if he didn't ventilate for a few hours, it would be fine, even so, Lu Chen still cautiously opened his divine sense, and suddenly everything within a radius of hundreds of zhang in the lake came into view.

There was no imaginary danger in the water, Lu Chen swam towards the bottom of the lake, and soon saw a black hole, and an extremely strong aura was gushing out of the black hole!

As the aura fluctuated gradually and violently, Lu Chen's divine sense began to be affected, and he couldn't see the situation inside the black hole clearly at all.

Lu Chen was cautious by nature, and after carefully sensing it, he didn't feel the slightest danger in the cave, and after thinking about it for a while, he decided to enter the cave to investigate, and then his body passed through the hole like a sharp arrow!

After Lu Chen entered the entrance of the cave, he was surprised to find that there was not the slightest water stain in the cave, and as he went deeper and deeper, the aura became more and more intense.

Although Lu Chen's cultivation speed is amazing, he is actually not broad in knowledge, only limited to the classics he has read in the sect and the teachings of Luo Linger and Liu Ruyue to himself, since he can't understand the mystery of this cave, Lu Chen decided to ask Ji Yingying to go down and have a look.

After a while, Lu Chen returned to the island in the lake.

"Childe, are you okay? How about next?" Ji Yingying saw Lu Chen come back safely, her nervous expression eased, and her hanging heart finally fell, showing a charming smile to Lu Chen.

The changes in Ji Yingying's expression fell on Lu Chen's eyes one by one, and Lu Chen's heart was very moved, in addition to Luo Linger and Liu Ruyue, now there is another Ji Yingying who really cares about herself.

"There is a black hole at the bottom of the lake, after I went in, I found that all the rich aura here erupted from there, but I don't know what the mystery of that black hole is, you go down and help me take a look!" Lu Chen briefly explained the underwater situation.

"Okay, Childe!"

As soon as the words fell, Lu Chen hurriedly took her hand and jumped into the bottom of the lake, Ji Yingying's face was blushing, this was the first time she was held by a man since she was a child, and the hand of a woman who was not out of the pavilion could not be held casually, but he was his own son, how could he talk to him, thinking of this, Ji Yingying's face became even redder.

After a while, the two of them arrived at the cave at the bottom of the lake, and Lu Chen found that Ji Yingying looked very nervous, and her cheeks were red.

"We've arrived, this is it, hey, Yingying, why is your face so red, are you okay?" Lu Chen asked with concern.

Ji Yingying didn't know how to speak, and Lu Chen suddenly found that he had been holding Ji Yingying's hand for a while.

This will change Lu Chen's embarrassment, Yingying is a lady who has not yet been married, although she is nominally her own maid, such close physical contact is really detrimental to the reputation of the girl's family.

"Yingying, I really didn't mean to, I'm sorry!" Lu Chen sincerely apologized.

"Well, Childe, I believe in you. Ji Yingying lowered her head and said with a blushing face, but she didn't dare to look at Lu Chen's eyes.

"Yingying, the aura here is stronger than any place I've been in before, do you know why?"

"I've seen a similar description in the sect's secret texts, but I'm not sure, let's dig a little deeper and maybe find clues. Ji Yingying faintly felt that the two of them should have encountered a real spiritual vein, like the Xinghe Sword Sect was built on the spiritual vein, but in fact it was just a low-grade spiritual vein, and the only sect in the entire mortal world that had a complete high-grade spiritual vein was the Xuandao Sect, the largest sect in Beihai. ”

"It's no wonder that among the sects in the entire mortal realm, the Xuandao Sect is the strongest. Lu Chen said.

The two of them walked into the cave for a few hours, and found that the light suddenly brightened in front of them, and there were nine pillars of white light and glittering spiritual energy.

"Oh my God, Childe, we really encountered a spiritual vein, and it was a complete spiritual vein!" Ji Yingying grabbed Lu Chen's arm and said excitedly.

"I don't know much about the spiritual vein, Yingying, can you tell me more about it?" Lu Chen asked modestly.

"Well, through the color of the aura light pillar, you can determine the level of the spiritual vein, normally, gray-white is the lower grade spiritual vein, pure white is the middle grade spiritual vein, milky white is the upper grade spiritual vein, and if the jade is transparent, it belongs to the legendary superb spiritual vein. ”

Legend has it that in the mortal world countless thousands of years ago, the aura was also very strong, and some aura penetrated into the ground, precipitated, and combined with the rare mineral deposits underground, it turned into a spiritual vein. And now in the mortal world, the aura has begun to thin out, and the cultivation sect mainly relies on the underground spiritual veins to maintain and expand the sect.

A big sect must rely on the great spiritual vein to survive, otherwise the disciples in the sect do not know how many years to cultivate just by absorbing the spiritual energy that is free in the air, from the cultivation period of the qi refining period to the stage of transforming the gods, they need infinite spiritual energy, just by exhaling and absorbing the spiritual energy in the air, the advanced speed can be imagined, and they often die of old age before they can break through to the next level of cultivation.

Therefore, the excavation of every new spiritual vein in the immortal cultivation world will set off a bloody storm.