Outside the hallucination, the three magisters looked at the rapidly depleting demon core and felt distressed.

When Han Feng entered the illusion world, the three of them were talking about Han Feng's past while observing Han Feng's actions, and before the three of them could talk for long, Han Feng had already begun to cast spells in the field, and at the same time, it also accelerated the consumption of the demon core embedded in the heart of the array, and the three of them had to stop and pay attention to replacing the depleted magic core. Before I had time to feel distressed, the magic core I had just put in was still rapidly consumed.

From the time Han Feng entered the illusion realm to the present, the three of them have changed the magic core three times in a row, even if all the students entered the illusion test last time, the three of them only changed it twice. But now Han Feng has consumed 18 fifth-order demon cores by consuming the energy of the illusion realm alone, which is all money! Although the fifth-order magic core is very expensive, it can still be purchased from the market, plus the empire allocates a large number of magic cores to the four general institutes every year, and the four major general institutes will not hesitate to inject blood in order to operate the cultivation ground, but consumption is one thing, and Han Feng's consumption alone is so large It is also beyond the expectations of the three demon masters.

But fortunately, after Han Feng entered again, he was quickly defeated by the Battle Emperor-level illusion, and the entire illusion slowly disappeared, Han Feng stood in the square square of the formation thoughtfully, and the shock in his eyes could not be dissipated for a long time.

No wonder Ninilou was arrogant everywhere, and Han Feng only knew the meaning of the War Emperor at this time.

The instantaneous change in the illusion just now made Han Feng deeply aware of the gap between the Emperor of War and the Emperor of War, and the Emperor of War until now Han Feng only fought against Ninilou, who was in the middle strength of the Emperor of War at that time, although he won in the end, it did not mean that Han Feng could easily crush Ninilou.

You must know that Ninilou is a War Emperor-level master, and in the illusion, the War Emperor can make Han Feng unable to move with just a wave, and then recall the battle with Ninilou at the beginning, Han Feng's cold sweat slipped down his temples drop by drop. Now Han Feng only needs to carefully scrutinize the battle between Ninilou and himself at that time, the more he thinks about it, the more scared he becomes, at the beginning, Ninilou still used the battle qi technique to compete with Han Feng in accordance with the rules, except for a few times Ninilou flew into the air, it was a real battle qi competition, although some of them were big and small, but Han Feng now has to admit that Ninilou did release water to herself, and this release of water is not an ordinary release of water.

Although Yu Wenguang and Duanmu Wuying had also restrained Han Feng, it was only a little restrained, in retrospect, weren't the two of them at the level of the Battle Emperor Great Demon Guide?

The gap between the levels is too big, this gap is not too obvious when it comes to the War Emperor, Han Feng thinks that he can compete with the War Emperor, but the gap between the War Emperor and the War Emperor is so big, Han Feng can't accept it for a while.

"My strength is still very weak!" Han Feng muttered to himself

After coming out of the illusion, Han Feng kept bowing his head and muttering to himself, ignoring the three magisters and leaving alone.

The Wind Refining Cave is located in the northeast corner of the Thorn Academy. It is a barren land full of mountains, and the north wind has not been interrupted all year round. At first, there were still some traces of demonic beasts that were struggling to survive around, but with the opening of Liancheng, this place was also patronized by the masters of the Thorn Academy, considering that the future students needed to have a safe environment for their cultivation, these luckily surviving demonic beasts also came to the end of their lives. At the tip of the mountain, countless weeds still do not give in to the north wind to show their will to survive, but the rooted mountain cannot withstand the erosion of the strong wind year after year and becomes mottled, and the mountain peaks are also blown into a thousand postures.

There is a naturally formed valley in the middle of the mountains, and the master of the Roewereign War Emperor Great Demon Guide level considered that the environment here is very similar to the Gale Cave of the Death Desert, and spent great efforts to dig a passage in the mountains to connect with this valley, coupled with the shaping of the Earth Great Demon Guide, the entire valley was encircled, forming a closed space, and the outer part of the valley has been carved with a dense wind system enchantment array. In order to prevent the circle from being destroyed, the gold shaper once again covered the circle with a thick metal shell, so as to ensure that the wind barrier circle would not be damaged by the long-term north winds.

When the north wind blows into this confined space with the crack, the accumulated wind has nowhere to dissipate, and slowly forms a number of wind sources, and the closer you get to the valley, the stronger the wind can be felt, and the wind pressure begins to form, and the oncoming wind is like a knife cut.

When the Thorn Academy was first established, this valley was used as a special training place for members of the royal family, and both warriors and magicians could feel a strong sense of suffocation here.

Especially in winter, the wind blows more and more fiercely, and the huge wind pressure pours into the cracks with a biting chill, which makes the outer valley here snow and ice freeze. The closer you get to the valley, the stronger the chill becomes, and the wind pressure is irregular, and the huge wind pressure slowly forms a chaotic wind blade with the increase of wind speed, blowing along the mountain one by one, decomposing some unstable mountains, forming a storm-like rain of gravel.

With the establishment of the wind barrier, this place has slowly become a wind system cultivation place second only to the Death Desert Gale Cave, where the wind is continuously absorbed from the outside world, not only the wind pressure is strong, the wind speed is fast, and the wind blade inside is even more difficult to figure out the law, and the warrior of the war king level will be hit by the sharp wind blade if he is not careful, and he will be covered in blood.

This is the place where the warriors below the War King are forbidden to enter the body, and only warriors with strong nerves who can tolerate pain can be allowed to come here to practice, and magicians can only hold up a magic shield in the iron bumps erected on the periphery to meditate. It's not without lessons before, some magicians who think they can be strong have never come out after entering the wind source, and when the powerful warriors enter with the shield, they find piles of corpses that have been eroded by the wind, this lesson is to tell everyone to be self-aware.

The main purpose of the wind refining cave is to polish the muscles and bones to increase the toughness of the body, and more people use the strong wind to cultivate stability, and to be able to stand firmly in the wind without being repelled by the wind blade, then the purpose of cultivation has been achieved.

But today, Han Feng came to the Wind Refining Cave, the other two cultivation places on the Dikun side are good, but they are far from the refining body he is pursuing now, the Wall of Sighs Battle King level is no longer challenging, Han Feng's arm strength is enough to make some veteran war kings embarrassed, since there is no way to improve the arm strength for the time being, then it can only be abused. Han Feng remembered that his father also came here to practice at the level of a general, and it seemed that he was injured and hospitalized here to meet his mother, and after the illusion was hit, Han Feng thought of this place for the first time.

On the periphery of the crack cave, the magician can slowly feel the rhythm of the wind, although it is chaotic, but at least it is easier to approach the wind element here, and for the martial artist, only by challenging the more violent wind blade, his body can be more tenacious, and the polishing of the battle qi will become more and more rounded.

At the entrance, there were seven or eight War King rank warriors walking out of the entrance, the armor and leather on their bodies had long been gone, only some rags hung on their bodies, and their bodies and faces were covered with cuts torn by wind blades, some flesh and blood had begun to turn gray and white, but more blood was still flowing out from time to time. These martial artists have reached their limits and are no longer suitable to continue practicing here.

A mentor at the entrance looked at these departing war kings, with a hint of admiration in his eyes, being able to bring them in the wind refining cave for a few days is enough to prove the strength of these people, some magicians can't withstand the huge wind pressure just on the periphery and faint from meditation, let alone these strong people who have entered the wind source to hone inside.

At this time, Han Feng handed out his school emblem and nameplate, and the tutor looked at the young Han Feng and shook his head. Han Feng?Mid-level War General?I'm afraid not, only the cultivation here can be qualified to enter, and if you go in below the Battle King, you will be injured or even killed, go back and hone and hone again, and then come to cultivate when you reach the Battle King level. ”