On the second day, Dai Daojin sat cross-legged on the bed.

"Knock Knock ......"

Dai Daojin got up and opened the door, and saw a disciple outside the door, holding a scroll in his hand, with a respectful expression.

The disciple said, "Sir, on the orders of Mother Earth, I will send this." ”

Dai Daojin took it casually and nodded in thanks.

The disciple arched his hand and left.

Dai Daojin returned to the room, put the scroll on the table, rubbed his fingers, smelled the fresh scent of ink coming from his nose, and understood that the scroll had just been transcribed last night.

He didn't rush to open the scroll, but slowly closed his eyes.

......

In another side hall, Feng Yin sat opposite Wen Dai and his wife like a small adult.

Wen Dai said with some unease: "Little Brother Feng, are you sure you don't need to invite Mr. Dai here?"

Feng Yin's face was calm, a trace of silver stars flashed under his eyes, and he said quietly: "I have already informed him, there is no need to invite him over again." ”

Windell was silent, then nodded.

She seemed to sigh and said, "Little Brother Feng, no matter how much you know about the Book of Black Sky before, I have to persuade you, it's still too late to turn back." You must know that since the birth of this martial scripture, for hundreds of years, no slave has been freed. ”

Feng Yin's face remained unchanged and looked at her quietly.

Wen Dai couldn't, and continued: "The Book of Black Heaven is divided into three volumes, the first volume is the general outline, which talks about the existence or absence of the four laws, the second volume of the Yuan Body, which talks about the cultivation of robbery power, and the third chapter, which talks about the use of robbery power. ”

Feng Yin nodded: "Whether there are four laws or not, I already know, please explain from the second volume." ”

Seeing that he had made up his mind, Wen Dai did not hesitate and said, "Stretch out your hand." ”

Feng Yin stretched out his right hand and handed it to him.

Wen Dai grabbed his right hand, and the true qi in his body flowed, heading towards Feng Yin's body.

The starlight under Fengyin's eyes shone brighter and brighter.

Wen Dai said as she moved: "I am now using my true qi to penetrate your hidden veins, you may be a little uncomfortable, bear with it for a while." ”

Feng Yin nodded, closed his eyes and carefully experienced, only to feel that a stream of true qi flowed into the dantian from the Ren vein, and after a rotation, along some strange trajectory, then abruptly disappeared from the manifest vein, and entered a place that seemed to be nothing, and seemed to be nothing.

His mind was condensed, and he perceived it more carefully, only to feel that this place seemed to be a secret passage connecting the body and heaven and earth, between the illusory and the real, without inside or outside, without yin and yang.

Moreover, he vaguely felt that the hidden vein and the manifest vein were not completely disconnected, and the two seemed to have some kind of connection, a very peculiar state.

Wen Dai's true air flow seemed to have broken the balance, causing a certain force in this place to begin to stir.

At the same time, Wen Dai's soft voice came into his ears, all of them were some mental methods to store the spirit and control the qi, which should be the second volume of the "Black Sky Book", the method of cultivating the power of the robbery, he silently remembered.

After a while, Feng faintly felt the part of the ear, the qi and blood and divine consciousness converged, and there was a feeling of emptiness and itching, but it was still within the range of enduring.

And between Wen Dai's true qi flowing, his body faintly felt a little comfortable.

This feeling of comfort did not last long before disappearing.

Feng Yin opened his eyes and saw Wen Dai's white hand withdrawn.

Wen Dai saw that there was nothing abnormal in his complexion, and admired the tenacity of the other party in his heart, and said with a smile: "Feng Yin, the place you perceived just now is the key to the cultivation of the "Book of the Black Sky", which is called the hidden vein, as the name suggests, it is different from the eight veins of the Qi Jing and other manifest veins, but the veins outside it, there are thirty-one in total, just the number of days in secret, so it is named after the three walls and twenty-eight houses. In the future, you can combine the cultivation mantra I just told you to cultivate. ”

As she spoke, Wen Dai took out a thin book from her bosom and said, "This is the second and third volumes of the Black Sky Book, you can study it well in the future." ”

Feng Yin nodded and said with a smile, "Thank you." ”

Wen Dai thought that this child had become his own slave at a young age, although she would not harm him, she still couldn't help but feel a little guilty in her heart, stepped forward, touched Feng Yin's head, and said slowly: "Feng Yin, if you don't have to do it in the future, don't borrow strength from the hidden vein, you know?"

Feng Yin was slightly stunned, feeling the soft hands on the top of his head, and his brows furrowed slightly.

......

Dai Daojin opened his eyes, and the silver-white starlight in his eyes dissipated, returning to pitch black.

He thought about it in his heart, and countless times in his mind simulated the situation when Wen Dai had just opened the hidden vein, and at the same time, his spiritual power was radiated to the extreme, wrapping himself, and his spirit scanned all corners, but he still didn't get anything.

After a while, Dai Daojin couldn't help but heel: "It's a little interesting." ”

At this time, he turned his head to look out of the door, and with a "squeak", Feng Yin pushed the door in.

Feng Yin walked to the table, sat down next to Dai Daojin, and put the book in his hand on the table.

The eyes of the two met, and Dai Daojin stretched out his right hand, with his index finger and middle finger together, pointing at the ancestral aperture of Feng Yin's eyebrows.

"Buzz...... a silent wave spreads out.

At the center of Dai Daojin's eyebrows, the spiritual power boiled out, and the stimulated eyebrows showed a transparent color, and he could faintly see that there seemed to be another world inside.

The flowing spiritual power, driven by Dai Daojin's divine will, flowed into Feng Yin's eyebrows and ancestral apertures, slowly increasing more and more, and then wrapped his whole body, making Feng Yin's whole person exude a misty shimmer.

The two of them are the same person, they have the same mind, and when Feng Yin ascended, he silently picked up the "Book of Black Heaven" and began to cultivate the power of robbery, and Dai Daojin carefully explored it on the side.

After a long time, Dai Daojin put down his arm.

Then, he flipped through the books that Feng had hidden on the table, and thought silently.

Feng Yin stared at him with his eyes and said, "How?"

Dai Daojin put down the book and said lightly: "This hidden vein is indeed a little peculiar, to be precise, the hidden vein already exists, and it echoes the manifest vein, and there is an extremely weak energy interaction between the two, and this interaction is hidden in the void and is difficult to detect, so the visible and hidden veins are not completely isolated." ”

After thinking about it, he continued: "And Wen Dai's true qi inflow, breaking this balance, or tearing open the channel between the two veins, if the calamity cultivated in the hidden veins is poured into the manifest veins and turned into true qi use, this is the so-called borrowing, which will cause the previous states of the two to be invalid or broken. The body will naturally be in pain, which is also known as the Black Tribulation. ”

"And the true qi of the robber often plays a role in re-healing and restoring the original state at this time. ”

"If there is no help from the true qi of the robber, it will inevitably cause the two-way collapse of the hidden vein and the manifest vein, and the robber will inevitably die, which is why there is a saying that there is no master and no slave in the four laws. ”

Speaking of this, Dai Daojin added, "Of course, these are inferences made based on existing observations. ”

Feng Yin shook his head, disapproving at this sentence, although the deity made an inference, it was based on its rich martial arts reserves, which was basically correct, and he asked, "Can you find a way to open the hidden vein on your own?"

Dai Daojin thought for a moment and said softly: "I still need to study it again." ”