After the double locks are fused, whether he can enter the Mysterious Yin Realm or not will not affect Ning Fan's speed in refining heavenly materials and earthly treasures.

However, entering the Xuan Yin Realm and swallowing the Dark Chen Fruit can isolate the fluctuations and prevent it from attracting the attention of some old monsters.

Leaving the nine Dark Star Fruits in the Western Boundary Treasure Cave, Ning Fan only took one Dark Star Fruit, walked out of the cave, and crossed his legs to adjust his breathing among the bright mountains and beautiful waters outside the cave.

This is a strange fruit the size of a walnut, as black as ink, and the skin is filled with almost vast waves.

When his magic power reached its peak, Ning Fan took out the Dark Chen Fruit, placed it on his knees, mobilized his magic power with both hands, and continued to perform immortal spells on the Dark Chen Fruit.

To swallow the Dark Chen Fruit, you must have special immortal skills, otherwise taking this fruit will be harmful rather than beneficial.

Ning Fan's strikes were like lightning, and within an hour, millions of immortal arts had been inserted into the Dark Chen Fruit.

He then showed a solemn expression, and after pondering for a long time, he finally opened his mouth and swallowed the Dark Chen Fruit in one gulp.

The Immortal Technique sealed the flow of Dark Chen Fruit's medicinal power. After Dark Chen Fruit entered the body, it did not dissolve. It turned into a black light and escaped to the Dantian, where it was grasped by the soul in the Dantian.

Ning Fan's spirit at the moment is wearing a jade lock on his neck, which is the Yin and Yang Lock.

There is a sword light surrounding the whole body, but it is the Zhan Yi Dao Sword.

There is a magical elixir in the body, but it is the Huansheng Dan.

Holding a walnut-sized fruit in his arms, absorbing the vast power in the fruit little by little, he is the Dark Chen Fruit!

This absorption rate is as slow as a turtle crawling, but every moment, the power of Dark Chen Fruit is integrated into Ning Fan's body.

His mana will increase day by day as the Dark Chen Fruit is slowly refined.

What surprised Ning Fan was that the dark blood in his body slowly increased as the Dark Chen Fruit was refined...

The increase was naturally slow, but it made Ning Fan's breathing stagnate, and he immediately showed a solemn expression.

This dark blood was obtained after having sex with the little demon girl.

This dark blood allows Ning Fan to exert a bit of palm power.

As the dark blood increases, the power of the palm that Ning Fan can exert will naturally increase.

"Perhaps, I can use this dark blood to cultivate the 'Dark Yin and Yang', and use it as one of my twenty-seven palm positions in the future?" Ning Fan pondered.

After a long time, Ning Fan seemed to have made a decision, and in a flash, he flew into the sky of the western border.

In the sky, there is a simple and solemn ten-story stone tower suspended. It is the Hidden Immortal Pagoda given to Ning Fan by Luan Gu, and contains countless ancient techniques.

Just like the Hidden Immortal Tower, Ning Fan went straight to the ninth floor. He didn't like the one to eight-star techniques on the first eight floors. The only thing that caught his eye was the nine-star technique.

In the ninth floor, there are only thirty-four volumes of jade slips of nine-star techniques. Among these jade slips of techniques, Ning Fan found a volume of dark-type techniques.

"Obsidian Scripture"! The nine-star magical skill that only the elite monks of the Dark Tribe are qualified to practice!

Ning Fan said in his heart that sure enough, he knew that Emperor Luan Gu had the Dark Clan's technique in his hands.

On that day, the great emperor of Luan Gu revealed the names of the ancestors of the Dark Tribe, and even displayed the lost secret skills of the Dark Tribe.

In this Hidden Immortal Tower, there is the highest skill of the Dark Tribe, so it seems that it is not surprising.

"With this technique, if I have time, I can cultivate the Dark Star, and with the power of Dark Blood and Dark Star Fruit, I can cultivate Dark Yin and Yang bit by bit!"

"Yin Yin Yang was cultivated by Emperor Luan Gu for me. Dark Yin Yang must be cultivated step by step by my own strength!"

Putting down the "Obsidian Sutra" for the time being, Ning Fan went to flip through other Nine-Star Techniques.

Among these techniques, he found a nine-star corpse path magic technique - "Grave Transformation Sutra". This technique is stronger than the eight-star corpse path technique "Heavenly Corpse Transformation".

Ning Fan has already cultivated the corpse demon physique. Among the twenty-seven yin and yangs he will cultivate in the future, he can have the position of 'corpse yin and yang'!

In addition, Ning Fan also found a nine-star fire demon skill here - "Qingluan Sutra".

Ning Fan has practiced the Way of Fire for many years and has quite a lot of experience in it.

If he has time, he will also practice the "Qingluan Sutra" and gradually cultivate the first yin and yang of the nine demon yin and yang... Qingluan yin and yang, so as to control the fire of heaven and earth!

Unfortunately, cultivating the twenty-seven yin and yang is not something that can be achieved overnight. Ning Fan can only start planning now. If he wants to really let go of the practice, he has to wait until his cultivation level is improved.

"There are countless extremely pure Void Principles stored in the Dongming Bell... These Void Principles will be a strong guarantee for me to practice 'Jie Yin and Yang' in the future!"

Void is the control of space. Those who have cultivated the power of void to the extreme are the Immortal Emperors of the Palm Realm, and can form a realm with the wave of their hands.

"When I awakened from Fuli's demon blood, in my memory, I obtained the Fuli clan's demon skill..."Fuli Swallowing Shadows"! Although this skill only mentions how to remove the evil mark, it can help me cultivate it."

"Fuli Yin and Yang'...The only trouble is, I don't know where to find enough Fuli demon power to cultivate this Yin and Yang step by step..."

"The skills in my hand are enough for me to practice the twenty-seven yin and yangs, but without the corresponding power of Taoism, I will not be able to condense the blazing elemental crystals with the blazing elemental technique, and I will not be able to cultivate the respective yin and yang..."

Ning Fan remained silent in the Hidden Immortal Tower for a long time, and finally decided to leave the tower.

Just before leaving, Ning Fan suddenly stopped, turned around, and looked towards the sealed stone door leading to the tenth floor.

As long as the seal is opened, you can enter through the stone door, climb the stone stairs, and reach the tenth floor.

The tenth floor, according to Luan Gu, is the place where the 'key' is sealed.

Ning Fan doesn't know what the key is.

At this moment, he was looking at the giant sealed door on the tenth floor with extremely solemn eyes.

After unsealing the giant door at such a close distance, he actually felt a breath of dismay from inside the giant door.

Very familiar, yet very strange...

The familiar one almost made his blood boil, the unfamiliar one... made him unable to remember who that breath was...

"do not you remember..."

A faint female voice came from the sealed giant door.

Ning Fan was sure that he had never heard this sound before, and it was definitely the first time he heard it. But the moment he heard the sound, he felt a tearing pain somewhere in his heart.

Life is a grand encounter. If you understand, please cherish it.

You know all this, but you...don't remember...

"Who are you! Why are you sealed in the tenth floor!"

Ning Fan's eyes changed and he immediately walked towards the sealed stone gate. However, before he could get close, he was forced back by the heavy momentum of the sealed stone gate and could not get closer.

This sealed stone gate must at least have the strength of a saint to open it.

"I am your key, but you have forgotten me...you don't know my concubine..."

The woman's voice gradually disappeared and never sounded again.

Ning Fan stared at the stone gate for a long time, and finally suppressed the urge to ask Luan Gu.

The initial impulse was no longer in his heart, and when he looked at the stone gate again, there was a trace of confusion in his eyes.

"I must have seen her somewhere...but who is she..."

Ning Fan's feeling at this time was just like the feeling of a mortal in a dream. He clearly felt that everything in the dream seemed familiar, and he clearly felt that he should remember something, but he couldn't remember it.

When you wake up, you will suddenly realize it. When you think back, you have forgotten what you encountered in the dream...

If floating life is a dream, reincarnation is an endless interweaving of residual dreams.

There is nothing that can't be overcome, it's just that you can never go back.

When I wake up from the dream, you are no longer you, and I am no longer me.

"I'm leaving... I will open this stone door with my own hands one day."

Ning Fan turned around and walked out of the Hidden Immortal Tower, but did not hear a woman's voice of relief coming from the stone door.
Chapter completed!