If it was said that at the beginning of entering the challenge tower, Wu Feng was still eager to get the space spirit object, but after a period of tempering in battle, he had basically calmed down, and challenged completely according to the level, taking the challenge as a kind of cultivation.

And if you want to get the space spirit object, you only need to challenge to the relative level, and you can choose the space spirit object as the prize, and you don't need to be in a hurry.

On the twenty-eighth layer, Wu Feng fought for a long time due to the tempering of his body method, and lost forty percent of his mana. On the twenty-ninth layer, Wu Feng directly killed his opponent, using only thirty percent of his mana.

But after two successive challenges, the mana was lost by seventy percent, and the remainder was less than thirty percent, and after entering the safety zone of the thirtieth layer, he did not directly kill it, but slowly cultivated and recovered.

Wu Feng's more than 5,000 days of challenge time, it is still relatively relaxed, although the challenge tower is not a spiritual land, but it is actually a holy place for fighting, it is best to cultivate after the war, and the spiritual energy elements needed can be completely absorbed from spiritual objects.

In this way, Wu Feng cultivated through combat, and every time he recovered his mana, it was a long process, challenging two layers in a row, but it was only a day or two of battle time, but the time lost by recovering fù was directly calculated in months.

This is mainly because Wu Feng, who cultivates while recovering fù, will not take pills to replenish mana, so he will cultivate back little by little, and at the same time refine and purify mana, which naturally takes more time.

In the challenge tower, although the opponents who may be challenged include the human race, and the various races of demon beasts, the possibility of the appearance of divine beasts is not high, and opponents at the level of the middle of the mixed yuan realm and the middle of the seventh order will not pose a threat to Wu Feng.

It's just that for stronger opponents, it will be a little more troublesome to kill, and it will take more time. When the opponent is weaker, it is easier to kill the opponent.

In this way, Wu Feng was completely immersed in battle and cultivation. Although a long time has passed, it has been quite fulfilling, and without realizing the loss of time, it soon reached the thirty-ninth floor.

"If you remember correctly, the space spirit that the Void Spirit said is in this thirty-ninth layer. There is a second type of space iron. The level of space iron is higher than that of space stone, and if you put it on these thirty-nine layers, you don't know how big it is?" Wu Feng thought to himself, and once again gave birth to a heart of anticipation.

"Tianlong takes off, kill!" Looking forward to getting the spirit object earlier, Wu Feng faced the opponent of the thirty-ninth layer, and his attack was even more domineering and powerful, basically carrying the power of killing.

Although Wu Feng's state of mind was calm. I don't care about getting the space spirit object a little earlier or later, it's mainly based on cultivation. But now he is not cultivating, he is fighting with challenging opponents, and killing opponents faster and slower is not in conflict with his state of mind.

What's more, in battle, there is time pressure, but it is more motivated to kill the opponent faster. Increase the efficiency of battle, this is also cultivation!

Wufeng has an invincible mixed element realm. It is even comparable to the strength of the first Dangang, facing the middle stage of the Mixed Yuan Realm and the late stage of the Mixed Yuan Realm, the number of opponents of this level, forty-five opponents, and the number of forty opponents, there is not much difference between zài.

Of course. Since entering the thirty-fourth layer, there have been opponents in the late stage of the Mixed Yuan Realm, and the number of opponents is increasing, and the pressure is greater than before, but there is only pressure. There is no threat yet.

"Spiral Air Arrow!"

"Thunderbolt Spirit Storm!" After Wu Feng looked forward to the spirit object and strengthened the attack, it was naturally not a simple marksmanship, but a combination of marksmanship, boxing, and secret techniques.

Even when needed, Wu Feng didn't care about using some magical skills such as Sky Breaking Flash, Forbidden Sky Technique, etc. However, in the challenge tower, the main battle is mainly tempering, rather than simply killing the opponent, and there are not many times to use magic skills.

Soon, the forty-five opponents of the same level on the thirty-ninth layer were completely ambushed by Wu Feng's spear!

"Ninety-eighth option, space iron ......" When the jade bi appeared in front of him, Wu Feng found the option of the space spirit object in the shortest possible time, and chose it without hesitation.

"It's okay, it's okay!" Seeing the falling space iron, Wu Feng was not surprised, but he was not too disappointed, and secretly thought to himself: "Although the size of the space iron is also the size of a thumbtip, the quality of this space iron is higher, at least two space stones of the same volume." ”

"However, the space stone is on the twenty-eighth floor, and the space iron is on the thirty-ninth floor, according to the cost and gain of the challenge, it is difficult to say which one is cost-effective! But fortunately, I use the consumption and recovery of the challenge to cooperate with the arrangement of cultivation, and I don't care about the cost of the challenge tower!"

After putting away the space iron, Wu Feng entered the safety zone of the fortieth layer, and once again entered the state of recovery and cultivation. In the challenge tower, there is no worry about being disturbed, and in the safe zone, there will be no opponents to challenge, so you can practice with peace of mind.

Another month passed, Wu Feng woke up from his cultivation, and secretly thought to himself: "The space spirit object in the back, the latter is the space spirit wood, in the fifty-third layer, if you want to hit the fifty-third layer, it will take a long time, so let's cultivate with peace of mind during this time!"

After making the general arrangement, Wu Feng stepped directly out of the safety zone and started another round of challenges.

Wu Feng's current mana, in the challenge behind the forty layers, needs to consume more than fifty percent, and after each challenge layer, he must recover before the challenge of the next layer, and this process of recovery will also be used to cultivate, which naturally takes a long time.

Since the thirty-fourth layer, the opponents that Wu Feng has faced, in addition to the same level, also include opponents who are a small level higher, the late stage of the Mixed Yuan Realm, and the late stage of the seventh order.

And the number of opponents, starting from the thirty-fourth layer, also increased by two, one of the same level, and one was a little higher level, and the pressure faced was relatively greater.

However, if you can't reach the strength of the invincible Mixed Yuan Realm, the threat to Wu Feng is not great, and there is not even a zài threat, mainly depending on the opponent's race and ethnic distribution.

Although the opponent's strength was strengthening, Wu Feng still hit the fifty-third layer smoothly, but this time it took a lot of time. Although it only took him less than half a day to kill all his opponents at each level of challenge, the time for him to recover and cultivate was getting longer all the time.

As the number of opponents increases and the strength becomes stronger, the consumption of the battle becomes greater, and it takes longer to recover. The more mana is lost, the more space is vacated for replenishment, and the space for cultivation and purification of mana is greater, and it also takes longer to cultivate.

"Hmm, there is actually a divine beast, or a late seventh-order earth dragon beast......" When Wu Feng was in the safety zone of the fifty-third layer, after his cultivation had recovered to the best state, he stepped out of the safe zone and saw his opponent, his heart was suddenly shocked.

Challenging the fifty-third floor of the tower, you have to face fifty-three opponents in the middle of the Mixed Yuan Realm and the middle of the seventh order, plus twenty opponents in the late stage of the Mixed Yuan Realm and the late stage of the seventh order, the strength of these seventy-three opponents is not too weak in itself.

And in the opponent of the late seventh order, there was a divine beast in the late seventh order, and its strength was comparable to the peak of the seventh order, or even higher than the peak of the seventh order, then the strength of the opponent this time was not so easy to deal with.

"No matter how strong the opponent is, there is a space spirit wood on this layer, and it must be directly defeated! If the challenge fails, then you can only start all over again!" Wu Feng thought to himself, and the battle intent in his heart burned.

But at the same time as the battle spirit was agitated, Wu Feng's heart was quite solemn, and he took advantage of the challenge that the opponent had not yet attacked, and carefully summarized the opponent's situation, hoping to find the most suitable tactic.

"Among the seventy-three opponents, there are a total of twenty-two humans, eighteen fowl demon beasts, and thirty-three ground demon beasts, including the earth dragon beast. ”

"These demon beasts are numerous, and their strength is uneven, so they will kill them first, and when the opponents gather together, they will first throw out a thunderbolt spirit storm, quickly use the Sky Breaking Flash to open the distance, and then turn back to kill the weaker demon beasts. ”

"After solving some of the demon beasts, pretend to fight with the earth dragon beasts, actually attack and kill the rest of the demon beasts, and slowly cut off the opponent this time......"

"Nine Heavens Dragon, Heavenly Dragon Soar, Kill!" Wu Feng used the Nine Heavens Dragon Body Technique, used the Heavenly Dragon Exterminator Spear, looked fearless and fearless, and quickly rushed into the opponent group.

"Whoop, roar, squeak, kill ......" Between different opponents, the cries of demon beasts and the shouts of human beings all converged together and quickly besieged Wufeng.

"The gun is out of the shadow, kill!" Wu Feng was also unreserved, when some demon beasts were far away, he first attacked the demon beasts that were close to him, and hurried to kill the opponent.

"Hmph, if you guys know how to cooperate, there are more than seventy opponents of the same level, even if the strength is weaker, you can still defeat a certain family. But you don't know how to cooperate, even if there are some cultivators who are a little higher than a little higher, they are definitely not the opponents of a certain family!" Wu Feng thought in his heart as he attacked.

After hitting the fifth or sixtieth floor of the challenge tower, the number of opponents is relatively large, and regardless of the strength of the strength, Wu Feng's advantage is no longer obvious. But the opponent does not know how to cooperate, which is the biggest flaw of the bento and the weakness of the opponent group.

"Thunderbolt Spirit Storm!" Wu Feng roughly killed four or five demon beasts, and the rest of the opponents were all closed, and the attacks on him were extremely intensive, and it was quite difficult to dodge, so Wu Feng spent one percent of his mana to use the Thunderbolt Spirit Storm, and before the Spirit Storm exploded, he used the Sky Breaking Flash to leave.

"Boom!" "Boom!" is comparable to the power of a single blow in the early stage of the Dangang Realm and the early stage of the Eighth Order, exploding between the middle and late stages of the many Mixed Yuan Realms and the middle and late stages of the Seventh Order, the damage caused by that power can naturally be imagined, directly killing eight or nine demon beasts.

However, there is no way to replicate such a record, and if you want your opponents to gather densely again, such a situation is impossible. Although it is impossible to cooperate with each other to challenge each other, it is not that they are not intelligent, and they also know how to pursue advantages and avoid disadvantages.

And using the strongest thunderbolt spirit storm to consume Wu Feng Yicheng's mana is also not a trivial matter.

"Kill!" Taking advantage of the impact after the explosion, before the opponents could react, Wu Feng naturally would not miss the opportunity and quickly launched an attack on the opponent.

But this time, before the two demon beasts were killed, the rest of the opponents had already reacted and directly released an attack, overwhelming the attack.

"Oops! I didn't expect that after this explosion attack, those human and demon beast opponents all chose to have a larger interval and directly attack ......" Seeing the opponent's attack strategy, Wu Feng was secretly shocked in his heart, and found that the change in the battle situation was somewhat beyond his expectations. (To be continued......)