Yun Tian was stunned for a moment, he never expected this kind of change to happen, and he was a little caught off guard for a while, but when the thing quickly escaped, Yun Tian did not hesitate, and immediately used his true qi to quickly approach the cave in the middle of the valley from the edge of the valley.

At this time, Yun Tian was already at the edge of the valley, and with his movement speed, it was only a moment from the entrance of the cave in the middle of the valley from the edge of the valley, and he had already reached the edge of the cave before he even had time for half a pillar of incense.

With the disappearance of that strange light, a faint colored light screen appeared on the surface of the cave entrance, Yun Tian knew that this was an enchantment at the entrance of the cave, and it was said that there were at least five enchantment barriers at the entire cave entrance, so as soon as Yun Tian approached the cave entrance, he immediately released his spiritual sense to cover the entire cave entrance, and he wanted to try to break this barrier and strive to enter the depths of the cave entrance.

In fact, when he heard the scene depicted in Yun Mengrao's secret letter before, Yun Tian already had a guess, and now that he was there, he also had a further judgment through his own personal experience.

There should be a kind of chain formation arranged in this cave, and this kind of formation is called a streak array. The streak formation is actually a very terrifying formation, because it is often divided into multiple layers, and each time he goes deeper into one layer, his killing chance is even stronger. The lowest level of the streak array is two, and the highest can even reach nine layers, and it can often determine the level of its formation according to the level of the formation method, all of which depends on the method of the arrayer. Yun Tian believed that with his own strength, he would be able to arrange it to the fifth layer of the formation at most, and then it would be difficult to arrange it further.

Because as we all know, the arrangement of formations also requires a huge amount of spiritual knowledge and true qi, especially high-level formations, the need for spiritual consciousness and true qi is not just to have a certain amount of can be as simple as that, because later, in the process of arranging the formation, the amount of true qi and spiritual knowledge to be consumed is a heavenly amount, so unless the cultivation reaches a certain level, otherwise, those mid-to-high-end formations cannot be refined at all. Because the person who arranges the formation will lose enough true qi and spiritual sense halfway through, the formation will fail, and even because of the failure of the formation, the phenomenon of formation backlash also exists.

Yuntian was also worried that there would be those unexpected problems that would affect his original plan, so he poured a lot of energy into it.

The layer of the continuous killing array is stronger than the first layer, and each layer of its formation has restrictions on the upper formation, so when contacting this kind of continuous killing formation, even if it only breaks the first layer, the later formation must be taken care of, because if you are not careful, it is when all the formations are launched at the same time, at that time, I am afraid that the people in the formation will not know where to die.

At this time, the surface of the first layer of the streak array was glowing, which meant that the first layer of the formation had been opened.

Yun Tian's heart suddenly lifted, because as far as he knew, in fact, the enchantment in this cave should have been opened three layers, it stands to reason that he should be able to go directly into it, but the problem is that now this first layer of formation has actually been opened again, which makes Yun Tian surprised, could it be that what happened in the depths of this underground that the enchantment that had been cracked was opened again?

Although there were some doubts in his heart, Yun Tian's feet did not stop, and he directly reached the edge of the cave entrance, and he released a wisp of spiritual sense to probe the situation of the light screen.

The enchantment formed by the light screen is a kind of pure energy, this energy is very mellow, which makes the light screen extremely tough, which makes Yun Tian quite curious, he tried to use the spiritual sense and true qi twice to investigate, although the spiritual sense can enter, but the true qi is blocked outside. It can be seen that this enchantment is still somewhat repulsive to foreign true qi, so Yun Tian pondered for a moment before releasing two true qi, one from the top of the light screen, and the other from a place outside the cave to seep into the soil, ready to start from below, detour back to the bottom of the light screen to try to enter.

Yun Tian used his spiritual sense to control the two true qi to probe into the cave entrance, but unfortunately the first true qi had just arrived near the cave entrance, and was blocked by the light screen at the entrance of the cave.

And the true qi that probed in from below was also in trouble, the true qi was relatively smooth at the beginning, but when that true qi approached a position not far from the entrance of the cave, a powerful force surged out from the depths of the earth again, and that power once again retreated Yuntian's true qi from a distance, making it impossible for him to get any closer.

At first, Yun Tian tried to confront each other for a while, but when he found that the true qi energy transmitted from the depths of the earth was getting bigger and bigger, and it was becoming more and more difficult for him to forcibly suppress and confront, he decisively gave up and did not make further attempts.

Yun Tian knew that this characteristic of the Cave Light Screen Enchantment probably meant that there was some kind of high intelligence in the cave, otherwise there should not be such an obvious active behavior. Yun Tian made a judgment and finally decided to try it in a different way. He first cultivated the Five Elements True Qi for a period of time, and accumulated the True Qi to a certain extent, and then he planned to try again.

Although the Bright True Qi is higher, it is also incompatible with other types of True Qi, and Yun Tian feels that the other party does not have a very high level of True Qi, so he decides to use the Five Elements True Qi to try, so that he may be able to gain the approval of the other party.

However, because he couldn't determine which of the five elements of true qi the other party was, Yun Tian took a trick, he released five true qi with different attributes at the same time, but he didn't release too much of it, but released a wisp as thin as a gossamer, so that these five true qi with different attributes approached the entrance of the cave from different angles, so as to test which attribute of true qi might be similar or equivalent to the other party's attributes.

The five true qi approached the light screen at the entrance of the cave in different directions, Yun Tian controlled it with his spiritual sense, carefully and slowly approached the light screen, his control was very precise, and he tried to push the five true qi forward smoothly, when the five true qi reached the edge of the cave, Yun Tian keenly felt that only the earth true qi was relatively stable, and the other four true qi had large fluctuations.

A smile finally appeared on his face, it seemed that the key to cracking it was this, and Yun Tian immediately urged the earth-based true qi to cover the entire cave in one fell swoop.

The light screen of the enchantment disappeared in an instant, and Yun Tian smiled slightly and leaned into the cave.

At the same moment, Yun Tian keenly sensed that in the depths of the cave, a living breath was rapidly fleeing into the depths of the earth.