When Han Xiaolei and the others were preparing, Chu Nan had already used the carbon stone spiritual fire provided by Miao Shi to cook a lot of fourth-class spiritual food.

These fourth-class spiritual foods, in addition to the preparation for entering the Land of Secret Keys, are also needed by Chu Nan to improve their physique and carry out the cultivation of Stacking Armor.

The cultivation of this seventh layer armor is more difficult than the previous six layers of armor, and all of them add up.

After all, once this seventh layer armor is cultivated, Chu Nan's cultivation will also officially enter the late stage of the Primal Spirit Realm from the middle stage of the First Spirit Realm!

Right now, even with the improvement of his physique brought about by the fourth-rank spiritual food, Chu Nan also felt the difficulty.

After cultivating for two days in a row, he failed to cultivate the seventh layer armor.

This made him frown, and he vaguely felt that the cultivation of this seventh layer armor seemed to be missing some important link.

And he doesn't have much time to think about it right now.

Because tomorrow, he and the three of them will officially go to the Land of Keys.

"Big Fish...... I guess I've already taken the bait, right?"

Chu Nan's eyes were cold, and a trace of expectation rose in his heart.

Early the next morning, Chu Nan and the others went to the Land of Keys together.

This time, in addition to the four of them, they also brought their respective war beasts.

The war beast in step is a yellow-haired bear with rough skin and thick flesh and a huge body.

Yang Wei's war beast is a black gopher, with a pair of sharp claws that are extremely sharp except for the protruding fangs in the mouth.

Miao She's war beast is a white goshawk, not big in size, but very fast.

The war beasts of the three of them all have good combat power, but when they saw the knocking horses beside Chu Nan, their bodies trembled, and they subconsciously wanted to stay away......

Even if these three war beasts are all male beasts, there is still a fear of knocking on the horse......

After all, they've all seen the feat of knocking on the horse firsthand......

Soon.

The four of them came to the entrance of the Land of Keys.

It's a wide field.

In the very center of this field, there were many blue runes, which were densely packed and intertwined with each other to form an incomparably large key-shaped array.

This...... It's the entrance to the Land of Keys!

After the four of Chu Nan glanced at each other, they all took their respective war beasts and walked to the key array seal.

In the center of this key array, there is a groove for the study card.

At the same time, it is also the key to activating the key array.

Only when you put in the study card and there are enough credits in the study card can you activate the Key Array and enter the Key Land.

The four of Chu Nan had already accumulated the one million credits needed to enter the Land of Secret Keys in the study cards of Buju, and now after putting them into the learning cards, the entire Key Array Seal suddenly emitted a strong blue light, enveloping all the four of them and the four beasts.

The next second.

Call!

The blue light instantly blended into the formation seal, and disappeared with Chu Nan and the four of them and the four beasts.

Chu Nan and the others only felt a flower in front of them, and then they appeared in a land of ice and snow out of thin air.

The temperature here was extremely low, the wind was cold, the snow was flying, and the sudden cold made them feel a tingling pain inside and out, and they were extremely uncomfortable.

They hurriedly ran their respective exercises to ward off the cold.

Chu Nan's body was covered with black armor, which expelled the cold, and when he turned his head to look at Knocking Horse, a red light appeared on Knocking Horse's body, and the fire energy in his body could make it easily resist the severe cold here.

Everyone else has their own way of fighting the cold.

"Han Xiaolei's gang...... Will you really take the bait?"

Yang Wei couldn't help but ask.

"Rest assured, they will definitely not let go of this kind of opportunity. ”

Chu Nan is very confident in this.

"Everything went as planned. ”

Everyone nodded.

They were all first-time visitors to the Land of Keys.

I'm curious about this place.

At this time, they were in a huge open plain of ice and snow, and not far in front of them, stood a huge ice castle.

The whole castle seems to be made of ice, crystal clear and beautiful.

They were as small as ants before the castle.

Without staying too long, the four of them entered the castle together.

And not long after they entered the castle.

Call!

In this land of ice and snow, there is light again.

Han Xiaolei and the three of them came here with their war beasts, followed closely.

When they arrived, they did not rush into action, but waited in place.

A moment later.

The light appeared, and three more followed.

The three people who arrived in the second batch, in addition to Li Mian and the thick-lipped boy, there was also a young man shrouded in black robes.

The young man sat on a huge crow, his face could not be seen clearly, and he could only feel the powerful spiritual power fluctuations emanating from him.

This black-robed young man is the upper elite invited by Zhou Shao this time!

Due to the rules of the Key Land, you must enter in a team, and the number of people in the group is usually limited to 2-5 people.

Han Xiaolei and her group originally had five people, and if they added this black-robed boy, they could only be divided into two teams to enter in turn.

"Brother Gong, this time there is work. ”

Han Xiaolei and the others were very humble in front of this black-robed young man.

After all, this is the eighteenth elite of the elite department.

"Go as fast as you can, go to the top of the castle and wait for them there. ”

The black-robed young man spoke indifferently.

Before he came, he had already learned about this secret land, and knew that this castle was divided into five floors, except for the top floor, each other floor, there were many rooms, and each room could obtain the secret key.

And once you have enough keys, you can go to the top and exchange for a combo formation.

They didn't need to go to those rooms for this trip, they just went to the top to ambush.

When Chu Nan and them finished their adventure, they came to the top layer with enough keys to exchange for the formation, and they suddenly killed and snatched all their keys in one fell swoop.

After finishing lightly, the huge crow that the black-robed young man was sitting on flew straight towards the castle in front of him.

Han Xiaolei and the five of them glanced at each other, nodded slightly, and all walked towards the castle one after another.

At this moment.

Chu Nan and the others had already reached the first floor of the castle.

This first layer is very large, with white as the main style.

"The first floor, the simplest floor, has a key for every room here. ”

Buju told everyone what he knew.

"And the higher we go, the more difficult it becomes, but the number of keys in each room above will also increase, and after we have enough keys, we can go to the top layer and exchange for a combo formation. ”

Chu Nan nodded.

He also saw that on each room on the first floor, there was a key pattern, which meant that a key could be obtained here.

"Let's go straight to the second floor. ”

Chu Nan spoke.

I felt that there were too few keys on the first floor, and there was only one key in each room, so it was a waste of time to wander here.