Being in the huge space of more than a thousand zhang below, Xue Zhen could hear the sounds of the spiritual creatures and natural activities in the grove above with just that pair of ears, which was an incredible progress for Xue Zhen.

In the past, when Xue Zhen was cultivating in that underground river, some small ground insects that were moving nearby would also make a slight "squeak" sound, Xue Zhen almost needed to get close to the ground insects, and even when he fell to the ground and went down to the river, he could only hear it, in comparison, Xue Zhen obviously felt that his hearing had reached a realm.

"Haha! Now you can try what level Xuan Tiancong can reach!"

Xue Zhen laughed loudly, when he spoke, he had gently reversed and twisted in his hand, conjuring his palm in some more strange way, and the magic technique was practiced, Xue Zhen's palm actually conjured up a black Xuanzhixia, gently, gently raised his hand and patted it, on the left side of the brain, the black Xuanzhixia pinched out by itself rushed into his left ear, and at this moment, a strange scene happened.

On the palm of Xue Zhen's hand, a black Xuan Xia suddenly turned into a four-legged beast that was only about an inch, with big ears and closed eyes, which went straight through Xue Zhen's ears and into his red-faced head, and disappeared in an instant. It's just that Xue Zhen, who sensed this scene, turned a blind eye to this and let the strange beast enter. In the blink of an eye, the strange beast protruded from the other side, and an extremely beautiful arc appeared on Xue Zhen's palm.

At this moment, on Xue Zhen's palm, the big-eared beast suddenly had a limp body, and the light was pleasing to the eye and then dimmed, revealing that Xue Zhen's hand was a Xuanxia, a pure white Xuanxia, Xue Zhen did not have any surprise, on the contrary, it even revealed a certain bit of stealing and joy, and the corners of his mouth also smiled slightly.

"Originally, I thought it would be a faint color, but looking at this result, Xuan Tiancong should have successfully practiced the first layer!haha......" Xue Zhen said excitedly.

Finally, Xue Zhen put away the joy of success, and silently, under the stimulation of Xuan Tiancong's heart, Xue Zhen meticulously sensed all kinds of sounds on the top of Qianzhang, and the sound was in his ears, and the time turned out to be ten days.

In the past ten days, in addition to skillfully practicing his own Xuan Tiancong, the most important thing is to practice it until he can put it away freely, and he can distinguish which voices he wants to hear, and which voices he does not want to enter his brain to exclude.

"That's right! Xuan Tiancong's spell is finally completed, and the next thing is to see if the spirit realm can be comprehended!" Xue Zhen thought secretly in his heart.

Then, Xue Zhen simply cleaned up, and completely stimulated the defense of the white bone trap beast array outside, however, Xue Zhen did not immediately choose a place to sit, in this small space, Xue Zhen went back and forth, slowly pacing his steps, thinking about a qiē comprehension information about the spiritual realm.

The spiritual realm is an immortal-level monk who perceives the composition of heaven and earth, gathers the corresponding power of heaven and earth, and forms a small world of his own, in this world, he can arrange flowers and plants, heaven and earth, dust and fireworks, and even all kinds of living beings according to his own wishes, and in the end, the spiritual realm can become an independent world belonging to the monk himself, and even replace it.

The spiritual realm cultivated by immortal-level monks will not only become an independent world, but also become the last shield of monks in the battle and collision between monks, but how to resist and what the effect of resistance is, it depends on the cultivation of the spiritual domain and the progress of cultivation.

At such a moment, Xue Zhen's understanding of the spiritual realm almost exceeds the sum of other kinds of exercises and even allusions, and for the spiritual realm, the methods of comprehension have been accumulated accordingly, and there are endless methods, of course, these predecessors' methods are only means, and whether they can realize the spiritual realm in the end is determined by the monk's own conditions.

At this time, Xue Zhen, remembering the sea, thought of all kinds of methods of enlightenment, including the epiphany for space, the comprehension of the power of the laws of heaven and earth, and all the others, what Xue Zhen thought of was actually a kind of comprehension of the formation technique, starting with a certain formation formula, and then realizing the spiritual domain.

And such a method is undoubtedly that Xue Zhen's former original owner personally deposited Xue Zhen's memories in the sea, and Xue Zhen at this moment, whether it was out of awe of his original owner, or out of trust in him, his first choice was undoubtedly such a kind of formation understanding.

Xue Zhen had studied such a formation technique before, but Xue Zhen's understanding of this formation technique, even if it was with his own understanding of the nature of the magic array, he couldn't see anything from it, and in the end, Xue Zhen had to give up.

Now that he picked up such a trick again, Xue Zhen had a different feeling, things were not people, the original owner of the year, that kind of care and care for himself, at this moment, he actually had an extremely heartwarming feeling.

"Master, don't worry, Xue has inherited your kindness, and now he is a small success, and he will strive to reach the pinnacle of cognition one day!

Xue Zhen secretly asserted himself, and also secretly made an oath, obviously this kind of oath is not empty words, although it is not a centripetal word, but that kind of commitment is many times stronger than the oath of the demon in the heart for Xue Zhen.

After a slight recovery, Xue Zhen began to recall the array in his mind again, and extremely strange rune spells and spiritual texts hurried through Xue Zhen's mind, waving his hand into a circle, two circles, three circles, until seventy-two circles, the formation formula was formed. At this moment, Xue Zhen was like a man surrounded by shiny lines, his expression was extremely solemn, and he carefully swept the words one by one, but even if these lines were Xue Zhen at this time, they didn't seem to be a magic circle trick, they were completely a new understanding that was difficult to explain clearly, and Xue Zhen suddenly fell into some kind of deep thought.

Until half a month passed, Xue Zhen still didn't make any progress, and Xue Zhen's mind at the moment was full of plausible lines, and all kinds of arrangements were fleeting, but Xue Zhen never understood them.