After all, the Black Sky Demon God Treasure Book is a god-level exercise, and the spiritual power and physical strength cultivated are not comparable to ordinary exercises, although Cheng Bo is only in the early stage of Xianjiu now, but even the peak of Xianjiu is not his opponent.

And this is still the case when he did not use the matching supernatural skills or secret arts.

The Black Sky Demon God Treasure Book contains three supernatural powers, two major battle techniques, and five secret techniques.

The three major supernatural powers are "Black Sky Demon Palm", "Black Sky Demon Fist", and "Black Sky Demon Shadow", the two major battle skills include "Black Sky Demon Spear Technique" and "Black Sky Demon Sword Skill", and the five secret techniques are Demon God Deprivation, Demon God Aura, Demon God Light, Demon God Imprisonment and Demon God Roar.

Whether it is supernatural powers, combat skills, or secret arts, it takes time to cultivate, and Cheng Bo estimates that it will take at least a hundred years to successfully cultivate the three major supernatural powers, the two major war techniques, and the five secret arts.

In addition, there are three artifacts that Cheng Bo needs to spend time refining, but fortunately, the time here is getting more and more day by year, otherwise, he really doesn't have that much time.

"It's time to go see my wife and children after ten years of retreat!"

Standing up, Cheng Bo walked out of the retreat, his mental power swept over, but he found that his twelve children were all adults, for a while, he was in a trance, and this has grown up?

At the same time, there were dozens of more young men and women in the manor, and judging from the fluctuations in their bodies, they were all the same boys and girls he had preached ten years earlier.

Because he didn't hide his aura, soon, his wives knew that he was out of the customs.

In an instant, more than a dozen figures appeared around him.

In the past ten years, their progress has not been small, especially Jenny and Youshang, who have reached the late stage of Xianba.

The worst has reached the Immortal Five, which is the effect of the Divine Crystal.

There are also his parents, his father Cheng Xiangxian is in the early sixth stage, and his mother Ren Liping is in the late fifth stage of Xian.

"Daddy!"

"Daddy!"

............

The figure flashed, and his twelve children flashed in.

Cheng Bo's gaze slowly swept over them, and he nodded with a smile: "You are all good, much better than your father back then!"

Among the twelve children, Zhou Yi has already stepped into the peak of the ninth-level creatures.

The twins Zhou Miaoke and Zhou Miaoxue were second only to Zhou Yi, and they had also reached the late stage of the ninth level of life, and as for the other children, they had all entered the level of the ninth level of life, and he was very pleased with this.

An Xiaoyun said: "By the way, husband, the teenagers and girls you passed down the exercises ten years ago took the initiative to come to the door, because you are in retreat, I took the initiative to keep them!"

"Well, you're doing a great job!"

Cheng Bo nodded.

After a conversation, Cheng Bo recruited the thirty-nine teenagers and girls into a hall.

Knowing that Cheng Bo was invited, they were very excited, because the longest of them came here was seven years, and the shortest was three years.

Although Cheng Bo was in retreat, the women also gave them guidance and gave them some cultivation resources, so the strongest of them had already reached the late stage of the sixth level of life.

He is already a master in the human race, but he is not enough in the witch race and the demon race.

This group of young girls rushed in, but they all knelt on the ground respectfully and said in unison: "Meet the immortals!"

"Get up!"

Cheng Bo flicked his hand, and all the thirty-nine teenagers and girls were held up by an invisible energy.

"Thank you, immortals!"

Cheng Bo smiled and said: "When I passed the gong back then, I left a message to you, you can come here to apprentice if you have cultivated a third-level life, but before you apprentice, I have another assessment for you, and if you pass the assessment, you can worship me as a teacher, and if you can't pass the assessment, I will send you away from here!"

"I'm willing to take the test!"

Thirty-nine people said without hesitation.

"Good!"

Cheng Bo nodded with satisfaction.

Directly captured the thirty-nine people, flashed thousands of miles away, captured thirty-nine demon beasts from a forest, and arranged a formation on a plain, and threw the demon beasts and thirty-nine teenagers and girls into it.

"If you can kill these demon beasts, I can take you as apprentices!" Immediately, Cheng Bo said to those demon beasts: "You can kill them, you can live, otherwise you will die!"

As soon as his voice fell, the thirty-nine demon beasts regained their bodies one after another, roaring and slaughtering the thirty-nine teenagers and girls.

Although this group of young men and women has good strength, they have not carried out actual combat training, and in the face of the demon beasts that have transformed into their bodies, their faces show a look of horror, but to Cheng Bo's relief, none of them retreated.

One by one, they all waved their fists and feet and faced this group of demon beasts.

The battle was fierce, and apart from the initial scramble, the group of young men and women quickly calmed down, as they found that this group of demon beasts was not as strong as they thought, and it seemed that their strength was not weaker than theirs.

And under the leadership of a teenager named Yan, this group of teenagers and men formed a rough formation.

A day later.

Two of the thirty-nine boys and men died, and the remaining thirty-seven were all wounded, especially Yan, who had a large hole in their stomachs and intestines flowing out.

And the group of demon beasts were all wiped out.

Surprised, Cheng Bo was really surprised, before throwing them down, he even thought that it would be good if they could have ten of them survive, but he didn't expect that only two died.

But it's relieved to think about it, they have been living in the gap between the demon clan and the witch clan, and if they want to survive, they have to fight with the sky and the lich clan, with a ferocity in their bones, so when they encounter a battle, they think of how to kill the enemy, not run away.

As soon as he grabbed it, the two souls were captured by Cheng Bo and forcibly stuffed into the bodies of the two dead teenagers, and a little energy was injected to repair their bodies, and they were resurrected.

"Wood, Ye you are alive, it's so good!"

Yan covered the wound and said happily.

At this moment, dozens of beams of light were dropped, and under the beams, the injuries on the bodies of these teenagers and girls healed instantly.

"I'm quite satisfied with your performance!so!" Speaking of this, Cheng Bo's eyes fell on the dead boy: "The two of you are eliminated, and everyone else can worship me as a teacher!"

Hearing this, Mu and Ye's faces turned pale.

"But it's a fate to meet each other, I will teach you a piece of exercise and give you some cultivation resources, and it will be up to you what you will do in the future!"

As he spoke, Cheng Bo punched two golden rays of light into the sea of consciousness of the two, threw each of them a divine crystal, and moved them back to the city.

Subsequently, he returned to the Blue Bird Peak with thirty-seven young men and women.

It took ten days to pass down the most suitable exercises and supernatural combat skills and spiritual secret techniques for them, and then threw ten divine crystals to each of them, and let them cultivate by themselves.

As for what level they can reach, it depends on their own creation.

After doing these things, Cheng Bo explained some things to the women and entered the retreat again.

Sitting cross-legged, Cheng Bo urged the power of the imprisoned cow to wrap the golden dragon dragon ball in his body, he wanted to refine this dragon clan with all his might, so that the power of the imprisoned cow could complete the fifth transformation, the imprisoned cow was a true dragon, and he was born to control the low-level dragon clan.

Therefore, it was unusually smooth to use the power of the Prison Ox to refine this Golden Dragon Dragon Ball.

A year later, the Dragon Ball was completely refined, and the power of the imprisoned ox had reached the verge of the fifth transformation, and Cheng Bo did not hesitate to take out a top-grade magic medicine and eat it.

A top-grade magic medicine went down to his stomach, and it suddenly turned into extremely surging energy.

Cheng Bo hurriedly urged the exercises to digest.

A few days later, a smile appeared on the corner of Cheng Bo's mouth: "It's done!"

The power of the imprisoned ox has entered its fifth metamorphosis.

Allowing the power of the imprisoned ox to transform itself, he took out the black magic spear for refining, and the Black Sky Demon God left a trick of refining in the artifact, mainly to facilitate his refining after resurrection.

But his arrangement is cheaper than Cheng Bo.

In just half a year, he completely refined the Black Magic Spear, and then he began to practice the combat technique "Black Magic Spear Technique", which has a total of five moves, each of which is extremely exquisite, and when it is used, it will not only use physical power, but also spiritual power.

This is also the reason why only the Black Sky Demon God with remnant souls can't use gun skills, otherwise, it won't be so easy for Cheng Bo to clean him up.

Enlightenment, rehearsal.

A year later, Cheng Bo barely cultivated the "Black Magic Spear Technique", and if he wants to continue to improve, he needs to conduct actual combat.