Early the next morning, Isu left the academy's camp and entered the old battlefield alone, oh, and of course, with two kittens, one black and one white.

"So, what the hell are you two trying to do with me?"

When the black cat doctor strengthened Isu's head for the third time, Isu looked at the two "seniors" helplessly, he was here to "experience", not to travel! Senior, you rob monsters like this, how can I swipe cards?!

"Meow, don't be angry," the doctor licked his paws, "I'm not moving my muscles and bones, don't worry, when I move my body, I will definitely not make another move." ”

Tess next to her also meowed softly and nodded carelessly, but her eyes, which were about to bend into crescents, betrayed her heart.

"Look to the sky."

Isu covered her face and sighed, and stood with her head up for a long time before looking at the doctor again: "So, what do you want to do, senior?" ”

"Meow, you're so boring."

The doctor shook the beard on the side of his mouth, did not hide his disdain at all, and even admired the sudden appearance of Yisu's green muscles with a look of tax evasion, but Tess beside him couldn't stand it, arched the doctor's body with her head, and said with a smile: "Meow, don't tease this child." ”

"Listen to you."

The doctor rubbed Tess's head back and responded with a smile, but such a warm scene made Isu feel choked.

"Meow, then I'll be blunt, I heard that you are a junior of Sawyer, and that little guy of El also values you a lot, so it's like seeing what is so special about you."

The doctor tilted his head and added, "Forget about your summoning technique, I've already seen it, is there any other means?" ”

"I said no, would you believe it?"

Isu sighed and beckoned to the doctor, "Come with me, let's go farther." ”

"Shall we?" The doctor's beard was cocked: "You can't trust my Tess Meow?" ”

"Don't worry about the child," Tess arched the doctor's body again, and turned to look at Ys, "I swear in the name of Shuangyue that I will never divulge your secrets to other people, elves and all other intelligent beings, otherwise you will be abandoned by Shuangyue, can you rest assured?" ”

"Alright then, but go a little farther, at least into the neutral zone."

Seeing that Tess had moved out of the two moons, Isu naturally had no reason to object, but he still emphasized again that no one was sure whether the academy would set up surveillance methods in his control area, and only when he went to the "neutral zone" outside the control area of the three major forces, he could safely show his ability.

"I know meow, let's go."

The doctor urged, and suddenly turned into a black light and rushed out, and ran towards the neutral zone first, the light of the healing system purified the undead along the way, and Tess stepped gracefully on the catwalk, unhurriedly following Ysu's side, occasionally striking to solve the newborn undead who suddenly broke through the ground.

Isu was also happy to be lazy, and he just avoided breaking the cards in the control area of the academy, in case he touched the curiosity of those masters, it would be troublesome, and he didn't want to be taken back by the academy as a new subject for research.

After more than an hour, one man and two cats finally arrived in the so-called neutral zone.

The neutral zone is mainly divided into two types of areas, four areas, one part is the junction of the three major forces' control areas, is the buffer zone of the three major forces, and is also a place specially reserved for the small forces and the three people, these three areas are the same as the three major forces control areas, and they are also the most suitable areas for collecting undead materials in the old battlefield, and they are the most active places for small forces and scattered groups.

And Isu and they came to the fourth area, this is the central area of the old battlefield, the black fog formed by the dead gas shrouds this land all day long, usually few people come here to collect undead materials, which also causes the dead qi here to accumulate more and more, and the undead spawned are becoming more and more powerful, since half a year ago, a team from the academy strayed into the central area of the old battlefield and encountered a group of undead of more than twenty levels, very few people have entered this area.

If the old battlefield is divided into levels, then the outermost outer, that is, outside the range of the wooden wall, belongs to the death qi influence zone, and the death qi from the old battlefield enters this area only and affects the vegetation here, but it does not give birth to the undead.

Within the wooden walls, the camp area of each force belongs to the periphery of the old battlefield, which is the semi-safe area of the old battlefield, and the concentration of dead air here is slightly thicker than that of the outermost area, and ordinary green vegetation cannot grow here at all, but as long as there are no corpses, it will also not give birth to undead spirits.

Further inward, it is the periphery of the undead area, and it is also the periphery of the old battlefield in the true sense, where the concentration of dead qi has exceeded a certain limit, even if there are no corpses, it will give birth to the undead, but the strength of these undead is very weak, and the general strength is below level ten.

Between the central area and the periphery of the undead area, is the middle level of the undead area, the strength of the undead here is generally above level ten, and occasionally there will be a single undead above level twenty, if you enter this area, you need to be led by an awakened master.

As for the central area with the smallest area and the highest degree of danger, if there are no more than five awakened masters to form a team, then there is definitely no life or death, the strength of the undead here is generally above level 20, and it also appears in groups, and there are even sighting records of the undead above level 30, if it were not for the two masters of Doctor and Tess to accompany him, Isu would definitely not choose to enter this area.

"Are you sure you want to show what you're capable of here?"

The Doctor tilted his head, and both he and Tess were covered with a faint halo that shielded them from the dead air in the central area of the old battlefield.

"Yes, but I need your help."

Isu said without hesitation, if you don't hug your thighs, you will be damned!

The couple of Doctor and Tess, for the current Ysu, it is the most standard golden thigh, and there is such a "monster farming treasure land" in the central area, which is simply the best opportunity for Yso to impact the quality of dark steel!

"Meow! For Sawyer's sake......"

The doctor glared at Izu, and agreed to Azu's request.

The next action is much simpler, Isu wanders around the central area with two kitten people, and once the figure of the undead is found, the doctor and his wife will go up to solve it, and remove the fighting ability of the undead, leaving only parts such as the skull of the skeleton, the torso of the zombie, and the core of the ghost, and give it to Isu...... of Willy's bodyguard.

There's no way, Isu's guy is too vegetable, even if the enemy has no ability to fight back, but if he doesn't use the card [Fireball Technique], he also doesn't have the ability to kill the enemy, so he can only be shot by Willy, and after killing twenty-six undead in his twenties, Isu finally brushed out his first dark steel card [Armored Skeleton]!

After letting the doctor and Tess look at the cards suspended on the corpse of the undead for a while, Isu reached out and grabbed the first dark steel quality card in his life, and at the same time that he came into contact with this [armored skeleton], a wave of energy suddenly gushed out of the void and poured into Isu's body unreasonably, and Isu only had time to say "ah", then rolled his eyes and passed out.

"I always feel like I've seen this situation somewhere."

The doctor rubbed his chin with his paws, and suddenly his cat's eyes lit up: "By the way, it's Sawyer!" Every time that guy's strength improves, there will be a wave of energy to help him strengthen his body! ”

"Don't think about it yet, come and see this kid......"

Tess next to her called the doctor, and the doctor turned his head to look at Ysu, and was suddenly stunned in surprise, and the beard on his mouth trembled uncontrollably: "This ...... It's cheating! ”