After eating the five-spiced bamboo shoots, Tian Xu asked about the progress of Ziyan's cultivation, and Ziyan said happily: "Before I went out last time, I barely cultivated the second potential of chasing the sun, and there was no progress in the third potential. I didn't expect to come back after just twenty days, and even the fourth momentum was practiced. Is it true that the time we experience outside is also accelerated in the Medicine King Bucket?"

Tian Xu thought for a while and said, "It shouldn't be." This time I went out, I went through several big battles in a row, and I have made a lot of progress in my psychological perception and physical training, so my cultivation has progressed. In addition, we have seen the process of ascending through the tribulation this time, and we have fought against the Holy Realm after the tribulation three times, which has a greater effect on promoting cultivation. At the beginning, before I was in Ning Dan, I had fought with Ning Dan Realm cultivators, and I was much smoother in the process of Ning Dan later. ”

"After I re-condensed the pill, I have also practiced the last potential of the second layer of the Sun Chasing Technique. ”

Later, the two talked about the advantages of the Sanctification Realm over the Ning Dan Realm, although Ziyan basically did not directly fight with the Sanctification Realm, she saw Tian Xu's several battles from beginning to end, and heard him say the key, her opinion was similar to Tian Xu's, and she also thought that the biggest advantage of the Sanctification Realm was the stealth ability without a trace.

The Great Elder was able to launch a surprise attack dozens of meters away from Tian Xu, and the clone of the two-body immortal toad was able to sneak to a place more than ten meters behind Tian Xu, and that big palm appeared directly beside Tian Xu and grabbed Tian Xu. This is simply unimaginable for Tian Xu, who has olfactory imaging ability.

Now the two of them have a common understanding, that is, there will be more opportunities to fight with the Holy Realm in the future, and if they can't cultivate the means to deal with the stealth of the Holy Realm, it will be a very dangerous thing to walk outside. After all, the combat power of the two of them, as well as the large-scale hunting of demonic beasts, had already committed the wrath of the demon gate, and when the Ning Dan Realm was actually unable to resist Tian Xu, the attack of the Holy Realm was inevitable.

"Didn't Yin Yang Ding say that Aunt Xu gave you the seed of some realm?Listening to the meaning of his words, can it be used to do this?" Ziyan suddenly thought of this question.

Tian Xu thought about it carefully, what Ziyan said seemed to make sense, he could try to see if he could rely on the small space in the sea of knowledge to discover the immortal of the holy realm after stealth.

"Well, I haven't figured out what that space does, but I can try it in this direction. Tian Xu nodded in agreement with Ziyan's statement.

Ever since he obtained the Yin Yang Ding and gained a super sense of smell, his ability to perceive his surroundings far surpassed that of cultivators of the same level. Later, after he synthesized multiple senses and realized olfactory imaging, he could easily cross the boundary of the realm in terms of perception ability, which made him feel more at ease than his combat effectiveness.

But only this time, when facing the opponent of the Saint Realm, the olfactory imaging failed one after another, causing him to face danger several times in a row.

At the beginning, after his sense of smell imaging came out, he used to be extremely confident in this, this kind of comprehensive perception ability, under the guidance of the particularly outstanding sense of smell, it stands to reason that at least it should not be completely unresponsive to the stealth ability of the Holy Realm.

Tian Xu was introduced into deep thought by Ziyan's words. Seeing him like this, Ziyan knew that he had some insights, so he didn't bother him anymore and went to study the question of how to combine the three swords of Ku Ding and his own kendo.

Tian Xu did not immediately immerse himself in the study of space in the sea of knowledge, but followed his train of thought to find the defects in olfactory imaging.

His olfactory imaging is a synthesis of various senses, in which olfactory predominates, which is the result of the fact that the sensitivity of smell is much stronger than that of other senses, and there should be no problem in this regard.

So is there something wrong with the sense of smell itself that he didn't notice, which leads to the lack of olfactory imaging? He combined the principle of stealth in the Holy Realm that Dan Ling helped him analyze, and confirmed that this was not a problem of smell defects. It's not a problem with other senses, but the invisibility of the Immortal of the Holy Realm can in principle avoid the scanning of his multiple senses.

So is there really no way?

Tian Xu carefully recalled the attack process of encountering the Holy Realm Earth Immortal several times, and there was a detail that caught his attention: the moment before the attack was launched, he still felt the danger coming, and made a more or less effective response, otherwise he might have been killed in the sneak attack of the Holy Realm Earth Immortal.

It's intuition!

However, intuition is something that cannot be seen or touched, and it is somewhat elusive, and his olfactory imaging does not integrate intuition, at least not to the same level as sight, hearing, touch, and taste, let alone compared to the sense of smell that he has always relied on.

The so-called six senses are vision, smell, hearing, touch, taste and intuition, when Tian Xu created olfactory imaging, he understood intuition as a synthesis of some special senses, including proprioception, and ordinary people could not feel its existence.

But now that his cultivation realm has made great progress, his understanding of intuition is no longer what it used to be. In the process of growing up, he had extremely rich experience in fighting with people, and the vast majority of cultivators would never have so many opportunities for actual combat in their lifetime, and in these actual battles, intuition did not only appear when facing the three Immortal Immortals of the Holy Realm, but also appeared many times in other battles.

Tian Xu compared the intuitive experiences in his memory again and again, and found that the essence of intuition should be different from other senses, it is not a feeling of independent existence, but a synthesis of the other five senses.

When danger arises, his combined senses have already found clues, and the subjective consciousness of olfactory imaging has not yet determined where the anomaly is occurring, and intuition has already commanded the body to respond. From this point of view, intuition, similar to olfactory imaging, is a comprehensive analysis and utilization of multiple senses, and is an instinctive response similar to conditioning, and should not be classified among the six senses. However, the inclusion of intuition in the six senses is a matter of habit.

If, on the basis of intuition, we further analyze the cause of danger earlier than our own olfactory imaging, and improve the sensitivity of our five senses in a targeted manner, our olfactory imaging should be able to reach a higher level and achieve the purpose of being more sensitive than before. It's just that Tian Xu is still a little dissatisfied with this. This was still a certain gap from his requirement to discover the hidden Sainthood Immortal in advance.

He was able to preliminarily judge that the reason why his intuition was able to detect the impending attack of the hidden earth immortal was because the other party had a murderous aura leaking out and disturbing the surrounding environment before launching the attack.

It was for this reason that before the Great Elder who had just crossed the Tribulation launched the attack, he was able to feel this attack earlier, so that he had time to disintegrate the golden pill and unleash the strongest blow with the Azure Jade Soft Sword.

Before the clone of the two-body fairy toad attacked, he and Ziyan sensed the existence of this attack at the same time, and they were able to divide up and kill one of each other's clones everywhere.

And the big palm that first made a move on him did not emit a murderous aura before making a move, but just acted casually and shot out in a rage, so he had almost no way to prepare in advance and was caught by the other party.

As for Xu Jingyi, who helped him repel the big palm, because he had no killing intent at all, although he had shot in person, Tian Xu was completely elusive, and he didn't feel where she was from beginning to end.

It can be seen from this that the so-called intuition is still detected by the breath accidentally leaked out by the other party, and when the Saint Realm Earth Immortal pays attention to avoiding the disturbance of the surrounding space when his emotions and aura are running, his intuition is powerless. This is not the result he wanted.

So, when a Sanctified Realm Earth Immortal is invisible, how can we perceive him? Or in other words, what is different from an ordinary mass of unconscious Spiritual Qi that exists as a Pure Spiritual Qi state?

Consciousness! Yes, it is consciousness!

Tian Xu discovered the key to the problem in an instant. What is consciousness, and what is the way to detect the consciousness of others?

The difficulty of this matter seems to be quite large. Think about it, if a stranger stands in front of you, how can you know what the other person is thinking? Is there really a so-called mind reading technique?

Mind reading may really exist, but Tian Xu doesn't have it anyway. And he soon realized that he didn't need mind reading to decipher what the other party was thinking, as long as he could discover the other party's existence.

Tian Xu subconsciously thought of the method of idea exchange that he had used. Is it possible to use a similar method to detect the other person's thoughts?

He immediately abandoned the idea, which was simply not possible. At least for him at this stage, there is no possibility of realization at all.

The so-called exchange of ideas is not to directly transmit and receive ideas, but to attach thoughts to the aura, and then transmit these attached auras to the other party's body, so as to achieve the purpose of communication. Without the sender's unsolicited aura with thoughts, the receiver would not be able to get the message, and there would be no communication between the two.

When he became a holy realm immortal hidden, there would be no aura with energy released at all, let alone an idea attached to it, and of course he would not be able to use the means of mind exchange to capture the other party's mind information.

Maybe when he cultivated to a high enough realm, he would be able to do this, but with his current Ning Dan realm, it would be impossible to do it anyway.

Finding that this path did not work, Tian Xu had no choice but to return and continue to think about other possible ways.

Although the method of exchanging ideas does not work, ideas are still the focus of his research.

He put himself in the invisibility of the Holy Realm, wanting to experience the way they moved when they were invisible. When the other party observes oneself invisibly, the other person's conscious activities include observing the occasional probing signal sent when receiving information from the outside world, the energy fluctuations when thinking, and the unconscious command information that controls the aura that makes up the body.

If he was preparing to attack, there would be stronger energy fluctuations revealed, and he had previously instinctively sensed danger from this targeted energy fluctuation.

However, it is one thing to have energy fluctuations, and quite another to detect them.