Wei Wuji's eight meridians have been refined into five.

There are still three meridians left, the anterior, posterior, and middle veins have not been refined. He was ready to refine the last three meridians and advance to the Void Vein Stage.

One main vein and eight auxiliary meridians are intertwined with each other. Wei Wuji washed with aura, and then tempered with the power of thunder, repeated in three, and slowly refined. When the aura ran out, Wei Wuji withdrew from the gourd fairyland and re-ingested the aura.

In this way, day after day, boring and monotonous cultivation, repetitively refining the meridians every day. I don't know how many days have passed, but Wei Wuji finally came to the time for the final breakthrough.

There is a spirit gathering circle in the grotto, and 10,000 spirit stones are piled up next to it, like a small mountain.

Wei Wuji sat upright in the formation, looking inside his body with his divine consciousness and thoughts, and the nine meridians in the front veins were twisted together like ropes.

The power of thunder followed the meridians, and the arc penetrated into the meridians, like a fishing line, threading the nine meridians through the needle and sewing them together.

Every trace of arc piercing in and out was a heart-piercing pain for Wei Wuji. He could only run the Great Phaseless Refining Mind Technique, so that his mind was clear, so that he would not faint, and gritted his teeth and persevered silently.

Huhuhu! The spiritual energy that was swallowed one after another penetrated into the meridians and temporarily relieved the pain.

Wei Wuji hurriedly used the power of thunder and tempered the meridians, refining the nine meridians that were twisted together like red-hot iron bars. Then the aura poured in one by one, relieving the tempering of the meridians, and then the power of thunder continued to be refined, and the inhaled aura relieved the ...... again.

After repeated thunder tempering, the aura was relieved, and the nine meridians gradually showed signs of fusion.

At this time, the aura in the circle gradually dried up. Wei Wuji's eyes closed slightly, and with a flick of his fingers, the Spirit Gathering Array loosened a gap, and the spiritual energy from the grotto outside the array poured in.

"These reias aren't ...... enough"

With a wave of his hand, Wei Wuji turned a thousand spirit stones into spiritual energy, swallowed them into the dantian, and then slowly merged into the meridians to alleviate the tempering of the thunder.

Time passed little by little, and when the 10,000 spirit stones were about to be used up, the nine meridians were finally tempered and fused together, turning into a thick front vein.

"Finally succeeded in refining the front vein, the following should be the refining ...... of the back vein"

Wei Wuji adjusted the front vein, did not delay time, and began the refining of the back vein.

Time, perseverance, perseverance, coupled with endurance, and the extravagant use of spirit stones at any cost. Wei Wuji finally succeeded in refining the back vein, leaving only the last middle vein, which had not yet been refined.

However, in the process of refining the middle channel, there were some problems.

Wei Wuji refined over and over again, not as smooth as the previous meridians. Every time the refining is slightly relaxed, the nine meridians twisted together will loosen a little, and the refining effect will be minimal. This kind of cultivation has a feeling of advancing three and retreating, which makes Wei Wuji very helpless.

Wei Wuji flipped through the classics, and then looked through the cultivation records of Master Liuyunzi, as well as some of the cultivation of the Master Qianfu, but there were no such records.

"It's strange, could it be that they didn't have such an experience when they were refining the middle channel?" Wei Wuji suddenly wondered, puzzled.

The ancient texts say that there are no exactly the same meridians in the world, so there is no exactly the same cultivation. Find two people at random, even if they are twin brothers and sisters, and the meridians between each other will not be exactly the same. The meridians are different, and the cultivation is naturally different.

Wei Wuji didn't find the same cultivation as himself in the classics, so he could only explore it by himself.

He sat all day long, thinking bitterly. Finally, it occurred to me that it might be the cause of the root bone. Although this answer cannot be confirmed, the only difference compared to others is this.

Liuyunzi was the root bone of the seventh-order mid-grade, and the Thousand Fu Venerable Master must have been similar, so when they cultivated to the middle channel, they did not encounter Wei Wuji's problem.

And there is no such thing recorded in the classics, because from ancient times to the present, the root bones of the fifth order have never cultivated to the realm of the refining period.

In other words, the fifth-order root bone cultivation to the vein refining stage, from ancient times to the present, there is no one who is alone!

In addition to the requirements of the medicine peak, the requirements of the Guiyuan Sect are quite low, and the fifth-order root bones of the other branches are only the standard of servants. Only those who are above the sixth order are qualified to become disciples of the sect.

The root bone has always been Wei Wuji's skin pain, if you want to upgrade the fifth-order root bone to the sixth order, even if you have the help of the gourd fairyland, I don't know how much time it will take. The Creation Sutra is the cultivation method of the Thunder Clan, and the people of the Thunder Clan have a long lifespan, so the cultivation of the Creation Sutra is quite long, and it is not for ordinary people at all.

"No matter how much it is, advancing three and retreating two is also advancing one, the same is cultivation, the same is upward promotion, but it takes three times more time and three times more energy. As long as you can be consistent and persistent, you can be promoted to the Void Pulse Period......"

Thinking of this, Wei Wuji put aside all distracting thoughts and concentrated on refining the central channel.

Time passed day by day, and Wei Wuji sat in the Spirit Gathering Array of the Gourd Wonderland every day, refining the middle channel. Such days are monotonous and boring, and Wei Wuji is not only boring, but also practices other exercises.

He began to practice the artistic conception of arrows according to the nameless arrow technique he obtained. For the artistic conception of the arrow, he was deeply impressed and will never forget.

At that time, in the land of Lei Zong, Hongyu's strength was not as good as him, but when he opened his bow to draw arrows and drove the artistic conception of arrows, Wei Wuji was also like a man, and his heart was terrified, and he hurriedly avoided it in the distance.

"A cultivator with a lower strength than me drives the artistic conception of the arrow to aim at me, which makes me feel like this. If I cultivate the artistic conception of the arrow and aim at someone who is not as strong as me, what kind of scene should it be? Moreover, I still have the Burning Sky Bow in my hand, and I can comprehend the artistic conception of the arrow, so I can live up to the Burning Sky Bow in my hand!"

Wei Wuji began to try to cultivate, and felt the artistic conception of the arrow.

As long as you pay, there will always be a harvest, and time passes slowly, day by day. Wei Wuji's artistic conception of the arrow reached a considerable height, and the central channel was refined little by little.

He has been cultivating in the grotto and does not care about the passage of time. Suddenly, on a whim, I picked up the jade and asked about the time, only to realize that I had been cultivating the grotto for almost two years.

There is no Jiazi in the cave, and I don't know how many years it is cold, Wei Wuji secretly sighed in his heart.

He suddenly remembered that the old man in the Iron Prison Netherworld Cave was still waiting for his sweet and sour roasted fish, which was two years, and he didn't know what kind of resentment he had in his heart.

Thinking of this, Wei Wuji couldn't help but smile, and could only wronged him first. It seems that it is inconvenient for me now, so I made a sweet and sour fish and sent it to him.

Just as Wei Wuji was thinking, a subtle light and shadow flashed in the corner of the cave.

Wei Wuji felt a flower in front of him, and a phantom shadow flashed in the corner of the grotto. His heart moved, and his body leaned over to look around.