To deal with the Demon King, it was natural for Li Fei to think of using the Demon Suppression Mantra, but because he could only use one word of the Mantra alone before. Although later, his cultivation improved, but he still didn't need to use it consistently, so the power of the improvement was limited.

After all, the current demon king, but the peak of the second-level demon king, is equivalent to the peak of the middle stage of child-rearing, and even a few points stronger, even if Li Fei's cultivation and strength are improved, it is basically useless, and the huge realm gap is not at all offset by a word of truth.

But seeing that Xiao Erhei is desperate for his life, and he can't defeat the Demon King, plus the Xinghai Dao people are seriously injured because of the destruction of their natal magic weapon, even with the help of the Sansheng Pill, it is impossible to recover in a short time, as for the few remaining monks in the Dan period, there is no real effect, Li Fei has no choice but to face the difficulties!

As for Li Fei's desperate efforts with the Demon King, whether he can achieve results, this is no longer a matter of concern to him, he just wants to do his best, because no matter what, it is much better than sitting still. Although Xiao Erhei fully carried forward the unique spirit of the wolf king, the gap in strength and the state of the battle determined the final outcome!

However, after all, Xiao Erhei is an existence of the same level as the Demon King, and the corpse demon itself is also a relatively strong old monster, so although it fought to the death, it was still invincible, but it still caused great damage to the Demon King.

With the foundation laid by Xiao Erhei, although Li Fei thinks that he has almost no chance of winning, he thinks that using the mantra of demon subjugation and improving his strength will give him some confidence to fight with him.

Just after Li Fei made up his mind, Xiao Erhei had already become the end of the crossbow, and he could be defeated and killed at any time, so he stepped forward decisively!

In the face of a strong enemy, Li Fei naturally couldn't keep his hands, so he decided to make full use of the precious time provided by the Demon Suppression Mantra about a stick of incense at the beginning, and strive to get some opportunities.

When using the demon subduing mantra, in order to improve the effect as much as possible, Li Fei had the idea of asking the clone to try to read one more word, and the result made him ecstatic!

In fact, it is very simple, Li Fei himself will do it, and the clone will naturally do it, but it is such a simple thing, Li Fei has never thought of it! The biggest reason is that the mantra of subduing demons has never been useful, because there are no monsters to destroy at all, so Li Fei has not paid much attention to it, that is, in his spare time, he occasionally practiced.

Moreover, when the doppelganger successfully continued the demon subjugation mantra, the most exciting moment for Li Fei came! Because he could continue to read it! Then the doppelganger was connected again, and so on, thus breaking through the super problem of not being able to fully use the nine-character demon subduing mantra due to the limitations of the cultivation realm!

In addition to the problem of tacit understanding and coordination, there is also the problem of consistent exercise attributes, so the difficulty is conceivable. In addition, even if the cooperation of many people is successful, the power will be greatly reduced, and it is generally only to improve the overall strength, it is difficult to reach the realm of the unity of heaven and man as Li Fei just did, so that with the help of the power of heaven and earth, an incredible leap can be achieved!

In fact, there is another crucial point, that is, it is related to Li Fei's main cultivation method, but very few people know about it. In addition, it is very fortunate that Li Fei has just cultivated the "Ghost Immortal Refining Body", although it is only an entry, but the effect is remarkable, and it is precisely because his physical strength has increased a lot that he can withstand the pressure of the final cultivation skyrocketing, otherwise he will explode before he can act!

But even so, the powerful power of the complete nine-character demon subduing mantra still broke through Li Fei's tolerance limit in an instant, so not to mention the time that lasted for one stick of incense, the time for half a stick of incense was impossible, it only lasted for a moment!

However, with this moment's effort, not to mention what would happen to Li Fei himself, it was more than enough to kill the Demon King! Originally, after killing the Demon King, Li Fei himself would not be able to escape!

But at the critical moment, Li Fei's doppelganger stepped forward and shared most of the damage, causing the doppelganger's body to almost completely collapse and become a sieve, but the soul of the doppelganger withdrew in time and returned to the body of the deity! Even so, Li Fei's body still suffered serious damage.

So when Juanzi and the others rushed to Li Fei's side, everyone was stunned, only to see him lying in a pool of blood, although he couldn't move, but he had a happy smile on his face!

Everyone was surprised by the exaggerated amount of blood, under normal circumstances, Li Fei's blood was released, which was estimated to be the current scale, but what puzzled everyone was that his face was as usual, but he just looked extremely weak and tired.

A large amount of blood is naturally a clone, but Li Fei reluctantly recovered his body in order to protect the clone from being completely abolished.

Juanzi hurriedly helped Li Fei up and helped clean up the bloodstains, which made everyone even more surprised, because it had no scars on its body at all!

"What a powerful supernatural power!" A monk quickly thought of the reason, after all, when Li Fei walked towards the Demon King, he had seen another figure.

Everyone showed expressions, and at the same time, they also understood why the difference in strength between themselves and Li Fei was so big in the same Dan period.

Li Fei reluctantly sat down cross-legged, swallowed a pill of Sansheng Pill, and worked hard to heal his injuries, but he was no longer able to pay attention to other things.

Ten days later, Li Fei took another pill of Sansheng Pill and continued to heal. It wasn't until a month later that Li Fei took a total of three pills of Sansheng Pill, and finally basically recovered. Of course, this only refers to the main body, and the clone is only a preliminary process, so that the split soul can at least go back.

The situation of the Xinghai Daoist is much better, with the help of the powerful medicinal power of the Sansheng Pill, he has been cured, and seeing that Li Fei has finished healing, he hurriedly came over to express his gratitude: "Thanks to Li Daoyou's vast magical powers, he turned the tide and killed this demon in one fell swoop! The people of Xinghai and the entire Great Sea Star will always remember the life-saving grace of Daoyou!"

Li Fei saw that the people of Xinghai Dao were very sincere, and he didn't say anything polite to him, and said with emotion: "This demon is indeed too dangerous, and its strength is unprecedented! I have suffered a heavy loss, so I don't need to mention it, you see that my corpse demon in the middle stage of transformation died in battle! Everyone has seen how tragic that scene is!"

Xinghai Daodao: "Yes! It's really miserable! Because the strength of the Demon King is too strong, I suffered a heavy blow at that time, and others can't help at all, but we all feel the same way, and we are moved by the tenacious fighting spirit of the Wolf King!"

In fact, Li Fei has always had no good impression of Xiao Erhei, but this time he was also moved by his extremely high fighting spirit, if it was not for its desperate resistance, it was really unknown what the outcome would be.

For Xiao Erhei, it chose to die in battle, on the one hand, it was due to its temperament, after all, as a wolf king, although it became a corpse demon, its cold and arrogant nature remained unchanged, on the other hand, it was often "confined" by Li Fei, and it felt that it was not interesting to live, so it fought to the end with the demon king!

Of course, Xiao Erhei also knows the strength of the Demon King, and at the same time, he also understands that in order for Li Fei to achieve the final victory, it is basically impossible to escape death in the end, so it is better to be heroic.

Regarding the praise given to Xiao Erhei by the people of Xinghai Dao, Li Fei nodded and said: "It is indeed rare, so I plan to only take out its demon pill and bury it on Demon Slaying Island as a commemoration." ”

Xinghai Daoist hesitated for a moment, took out the jade coffin treasure, handed it to Li Fei, and said, "Li Daoyou, we have carefully explored this underground stone hall, and there is basically nothing else except this treasure, so please accept it." ”

Although Li Fei was only a monk in the Dan Period, his strong strength made the people of Xinghai Dao not only treat him as a fellow rank, but also put his posture very low, which was also in line with the rule that the strong in the cultivation realm should be respected.

Li Fei took the jade coffin, glanced at it, and put it away directly, after all, he paid a huge price and saved everyone, not to mention that there is only this one treasure, even if there are other treasures, it is natural for him to own.

Juanzi added: "In fact, this underground stone hall, strictly speaking, there is another treasure, that is, a huge stone pillar, the previous illusion was realized by these stone pillars and the runes on it, but these stone pillars are too big to collect, but the runes on it are still quite valuable and can be observed and studied." Except for the broken ones, I have copied them all in the jade slips, if Brother Li is interested, I can give you a copy. ”

Li Fei nodded and said, "Give me a copy, judging from the previous power, these runes should be extraordinary, I will study them well in my spare time." ”

After receiving the jade slip given by Juanzi, Li Fei got up and went to collect Xiao Erhei's demon pill, because Xiao Erhei died heroically, even if it died, no one bothered it, waiting for Li Fei to deal with it personally.

Then, the monks worked together to bury Xiao Erhei in the former stone hall. After dealing with the matter of Demon Annihilation Island, the people of Xinghai Dao warmly invited Li Fei and Juanzi to go to Luoxia Sect as guests.

Because there was still the issue of doppelgangers that needed to take time to deal with, Li Fei readily accepted the invitation. After experiencing the battle of life and death with the Demon King, the distance between everyone has narrowed a lot, although it is not as close as an old friend, at least it can be regarded as an ordinary friend.

After this battle, the decline of the Luoxia Sect has become a foregone conclusion, because the monks of the Yudan Period, who are the core strength of the sect, are almost completely killed and injured, and the monks of the Foundation Building Period, who are the new force, are only the last few hundred people left in the sect.

Of course, the small and medium-sized forces of the Great Star also suffered varying degrees of losses in this catastrophe, in addition to some of the forces that were wiped out, many of the monks of the Dan period also died in the battle just now, because in the end, including the monks of the Luoxia Sect, only fourteen survived.

A moment later, the group flew straight to the Luoxia Sect.