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He felt that in the environment he was in at this moment, there seemed to be an invisible power of rules from the outside world, affecting his soul.

After a while, he opened his eyes and pulled the red snake girl back.

After they retreated a certain distance, the red snake girl felt that her headache symptoms began to subside.

"Hey, it's ready!"

The red snake girl felt that her headache symptoms suddenly disappeared, and a look of surprise immediately appeared on her pretty face.

She looked upstream for a while, then gritted her teeth and walked some distance further upstream.

The headache symptoms appeared immediately.

She quickly retreated.

"It turns out that it's a matter of distance!"

The red snake girl said breathlessly.

Originally, she wanted to go upstream to scan the stone tablets in search of advanced soul secrets.

But now it seems that this idea is coming to nothing.

She took a deep breath, and after a while, she looked up at Ling Feng and said with a puzzled look on her face:

"Brother Lingfeng, I feel so strange. My cultivation level is higher than yours, and my soul should be stronger than yours. But why are you okay? But I am okay?"

"Well, I feel strange too!"

Ling Feng nodded slightly, he also had such doubts in his heart.

The red snake girl stared at Ling Feng and said, "Brother Ling Feng, please leave me alone and see how far you can go up this river!"

"good!"

Ling Feng nodded, and then started walking up under the gaze of the red snake girl.

Even though Ling Feng left the Red Snake Girl, the ghost in the river did not fly out to attack the Red Snake Girl.

"It seems that these ghosts cannot leave the river!"

After seeing this situation, Ling Feng was completely relieved, but he still did not dare to put the silver long knife back into his storage belt.

Because he knew that the environment here was special, he was afraid that after putting the long knife into his storage belt, he would not be able to take it out when encountering special circumstances.

When he walked more than 500 meters, he also felt that he had a headache.

He did not insist on walking anymore because he had already figured out that even if he walked too far by the river, he would have the same headache as the red snake girl.

He turned around and came back.

At this moment, his whole body was soaked with sweat.

The pain that comes from the depths of the soul is really too uncomfortable.

"How about it, do you have a headache too?"

Seeing Ling Feng like this, the red snake girl asked.

"Yes!"

Ling Feng nodded slightly, and then began to wonder in his mind why he and the Red Snake Girl had headaches, and why he could go further than the Red Snake Girl when he was at a lower level than the Red Snake Girl.

"Sister Hongyun, take this knife and try it!"

Ling Feng handed the long silver knife to the red snake girl. He had some doubts in his heart. It was this knife that allowed him to go further here than the red snake girl.

"This knife? Is there anything special about it?"

The red snake girl stared at the silver knife in Ling Feng's hand for a while, then took the knife, gritted her teeth, gathered up her courage, and walked upstream again.

But the red snake girl had only taken a few steps when her head began to hurt.

She quickly grabbed the long knife and retreated.

"It seems it's not the problem with the knife!"

Ling Feng looked at the silver long knife and his face sank slightly.

Afterwards, the two of them began to discuss this topic.

After a while, Ling Feng said to the red snake girl: "Sister Hongyun, if the biggest difference between the two of us is, I'm afraid it's the light of the technique I received before!"

Ling Feng has already called the white light emitted from the stone tablet the light of the technique.

Because this white light contains the secret method of the soul, which is similar to the light of the skill in the inheritance space of Ti Shu.

However, the light of the skills in the Tishu inheritance space is obtained from plants, monsters, and stones, and the light of the skills in the Tishu inheritance space can be preserved.

But they were unable to preserve the white light emitted from these stone tablets.

These white lights go directly into their minds.

"What's the difference?"

The red snake girl looked at Ling Feng with a confused look.

"Yes, it means that I get more light from the skills than you!"

Ling Feng looked at the pretty face of the red snake girl. The confused look of the red snake girl looked so cute.

"More than me?"

The red snake girl groaned. She recalled the previous scene in her mind and found that what Ling Feng said was true. She indeed received less light from the technique than Ling Feng.

"Is it really related to the light of the technique?"

The red snake girl murmured.

"This is very simple. Let's continue to scan those low-level stone tablets to get more light of skills, and then we will know when we go upstream!"

Ling Feng smiled at the red snake girl, then stood up and walked towards the stone tablets, released his spiritual consciousness, and began to scan the stone tablets.

The red snake girl also stood up and continued to sweep the stone tablets together with Ling Feng.

After a stick of incense.

Lingfeng swept nearly five hundred stone tablets.

The success rate of the stone tablets he scanned was 100%.

The red snake girl's success rate has been hovering around 30%.

Even so, the red snake girl successfully obtained more than a hundred groups of light.

"Brother Lingfeng, let's give it a try!"

The red snake girl couldn't wait to say to Ling Feng.

"good!"

Ling Feng nodded, then took the red snake girl's soft and boneless hand and walked quickly upstream.

This time, they easily surpassed the position that gave Red Snake Girl a headache before.

When they walked more than 500 meters, the red snake girl felt a headache again.

Ling Feng did not move forward, but pulled the red snake girl back.

"It seems that it is really the light of this technique!"

The red snake girl gritted her teeth and endured the pain from the depths of her mind.

"This should be a rule set by the creator of this space. Only by accumulating more low-level secrets can we be qualified to move up and scan more advanced soul secrets!"

Ling Feng spoke to the red snake girl calmly.

"That's what it should be!"

The red snake girl nodded slightly.

Originally she wanted to take a shortcut, but it seems that this method is not feasible now.

"Then let's take a break and then sweep slowly!"

Ling Feng opened his mouth and said to the red snake girl.

"Um!"

The red snake girl nodded, then sat cross-legged on the ground and began to practice and recover.

Lingfeng, on the other hand, sat down cross-legged and tried to fuse the soul secrets and yuan mystery that he had obtained.

Because the Yuan Mystic Law is only a branch of the Soul Mystic Law, this Yuan Mystic Law can also be integrated with the Soul Mystic Law.

For those strong people who have condensed their soul, the soul and soul are one.

Only by cultivating to the realm of the Master of the Way of Dividing Gods can the soul be separated from the Yuanshen again.

Ling Feng chose two low-level mortal soul secret techniques and began to fuse them.

When he began to fuse these two secret techniques, he felt that the power of his soul was being rapidly absorbed.
To be continued...