What's going on, how did you come back all of a sudden?

Both Guffy and Oxin couldn't help but hold their breath and subconsciously looked at the ring they were wearing...... This ring can indeed change its own breath, so that ordinary dragons can't detect it, but it really doesn't say that the undead dragon can't sense its existence?

This head is rotten? The zombie dragon staggered over, lowered its head, and sniffed vigorously with two nostrils that were big enough to fit a fist. ,:。

Ground, skeleton ......"

Gao Fei could even smell the rancid breath emanating from the zombie dragon's nostrils.

But after sniffing carefully for a while, I don't know if it found anything, or if it didn't find anything, maybe it was just reborn as an undead, and the reason why its head was not very bright was after all, both of them were infused with stealth techniques, as long as they were not attacked, or actively attacked, they would not show their shapes.

As if nothing had been found, the zombie dragon seemed a little upset and shook its snake-necked head vigorously.

Fortunately, Gao Fei hid quickly, otherwise he would have been directly kicked out......

"It's dangerous!" Gao Fei couldn't help but pat his chest. "This zombie dragon seems to have spotted us, what should we do?"

"I don't know. Hopefully it'll leave here right away...... I also don't know how intelligent the zombie dragon that has just transformed into an undead is. As long as we don't move, it probably won't be able to spot us. If you make a noise when you are walking, it is not necessarily. ”

Gao Fei nodded.

Although this was only Oxtin's speculation, he would have to believe it.

The gray and white 'colored' sand under my feet was broken and incomplete bones, and stepping on it was like creaking in the snow. Who knows if this zombie dragon will suddenly have a nervous breakdown and attack directly at the place where the sound comes from?

Although with the strength of the two of them, they can barely cope with a zombie dragon, but if the sound of the fight attracts the dragon lich, it will be bad.

Just when the two of them thought that the zombie dragon couldn't find anything, they were about to leave here, but who knew that the zombie dragon stopped instead.

And it stopped in front of the two of them.

Under Gao Fei's suspicious gaze, the zombie dragon waved its claws, digging holes, and large pieces of broken bones hit Gao Fei and Oxteen like water 'flowers'. There was a crackling sound, and the two of them almost pulled out their 'legs' and ran away, thinking that the zombie dragon had found themselves.

But when they looked at it, it didn't seem to be what they imagined.

The zombie dragon looked a little urgent.

I don't know what it's digging for......

Quietly, a little red light caught Gao Fei's attention. After seeing the glowing thing clearly, Gao Fei was surprised and happy that it was actually Long Jing. The zombie dragon stretched out its claws, slowly twisted up the dragon crystal that was no longer very pure, and threw it into its mouth, and at the same time there was a large handful of bones that were not completely broken, and chewed hard.

Quack, quack......

The sound of teeth rubbing against bones made Gao Fei sound the scene of himself eating crabs.

Finally, the scalp-tingling sound stopped, and it seemed that the zombie dragon had swallowed the dragon crystal...... However, Gao Fei had irrepressible excitement in his heart.

Dragon Crystal!

It's actually Dragon Crystal!

This is an indispensable material for mages to make epic weapons, you know, the black scepter in Oxtin's hand, the gem at the top of it is the dragon crystal. In the dragon graveyard here, at least there are thousands of dragons who have died, if you can dig up these dragon crystals and build a set of equipment for your skeleton mage, how awesome will it be?

As soon as he thought of this, Gao Fei couldn't help but 'agitate'.

God, you've treated me so well.

But just when he thought about it, he realized that something seemed wrong with the zombie dragon in front of him. The zombie dragon's mouth opened wide, as if it was roaring in the sky. After swallowing the dragon crystal, the zombie dragon's whole body couldn't help but tremble, and through the rotten 'flesh', you could see the craggy bones in it.

In the 'chest' cavity, the chewed dragon crystal had turned into a red 'color' light, and it was scattering wildly towards the four corners of the zombie dragon's body.

The tattered rotten flesh and the shattered red scales were also quietly becoming more shiny.

"Liter...... Upgrade...... Finish? ”

Gao Fei was stunned by this sudden sight. Is there such an upgrade method?

Aren't all wild monsters able to level up by fighting each other and gaining experience?

Is that okay too?

As if guessing Gao Fei's thoughts, Oxtin said slowly. "This is Warcraft's specialty!"

"Some of the monsters have energy crystal nuclei in their heads...... Among the monsters, you can enhance your strength by devouring the crystal nucleus. The dragon is also considered a type of Warcraft, so he can also rely on this way. Oxten nodded her head. As for undead creatures devouring the crystal nuclei of their own kind, this is the first time I've seen them. ”

Yes.

Gao Fei also saw it for the first time.

In the Undead Dungeon, the only way for the undead to level up is to kill each other and take their soul fire.

And in this dragon graveyard, the reincarnated undead dragon has no soul fire...... In other words, the source of the power that drives their activities is the crystal nucleus, which may be understood in this way. If you really want to start your hands, then you can't limit yourself to your previous thinking and look for a soul fire attack, but you have to switch to attacking the crystal nucleus.

Although the name has changed, the location has not...... It's still hidden in the head.

As soon as Oxtin spoke, these thoughts flashed through Guffy's mind like straightened information. Filter out some useless information, memorize some useful knowledge, and apply it in practice. This has become Guffy's habit.

After devouring the dragon crystal, the zombie dragon seemed to be alive. It's like suddenly going from a seriously ill patient to an athlete. The sluggish movements became smoother, and the clumsy brain seemed to begin to become clearer.

After the upgrade, the zombie dragon did not plan to leave, but looked for something again.

The huge nostrils were retracted and released, absorbing the smell of decay in the dragon graveyard. The zombie dragon circled around and eventually discovered the source of the scent. He sniffed vigorously, the suction in his nostrils like an industrial fan blowing wildly at him.

"Oh no, we're exposed!" After seeing the zombie dragon's actions, Gao Fei immediately reacted. The zombie dragon that devoured the dragon crystal was already a surge in intelligence. Although he still didn't find his location, he made a move to prepare for an attack. "Oxtin ......"

"'Handed it over' to me!"

Oxin also knew something was wrong. If you fight in this dragon graveyard and the noise is too violent, the consequences will be over. He shook the black scepter in his hand vigorously, and immediately a semicircular black 'colored' barrier like an eggshell enveloped him.

"It's an enchantment...... We only had three minutes. ”

"What, three minutes?" Gao Fei was stunned for a moment, and hurriedly shouted. "What can you let me do in three minutes, eat, sleep, or take a shower, even if you shit, you won't have time to wipe your butt, and you won't have time to lift your pants when you pee. You're only giving me three minutes to deal with this zombie dragon, aren't you kidding me again? ”

Rumble!

Before the words fell, the zombie dragon opened its mouth, and a mouthful of black 'colored' dragon flame spat out.

Suddenly there was an explosion.

Gao Fei narrowed his eyes, and secretly said in his heart...... If I had dodged a little slower just now, I'm afraid it would have been over. Glancing at the place where the dragon flame hit, the flames were still burning...... The spherical flames had burned a deep pit in the bone-covered ground, and although they didn't feel the heat of the flames, they could be seen from the edge of the flames that the damage of these flames would be higher.

"I'm not strong enough, this enchantment can only last for three minutes, and it can't be any longer!" Oxin shouted.

Hearing this, Gao Fei couldn't help frowning.

It's only three minutes......

It's really not enough, and if you want to kill this zombie dragon, I'm afraid one fatal blow is not enough. And at least three more times...... The deadly key is the crystal nucleus on the head, and the zombie dragon is so large that it is not so easy to deal with.

"Cover me......" Gao Fei frowned. Time is pressing, I can't hesitate anymore, I can only fight.

Now that the invisibility technique has been lifted, it is not so easy to steal under the eyes of the zombie dragon. Although the other party is not brainy, it does not mean that they are mentally retarded!

At that moment, Oxtin answered, and with a flick of his right hand, a bone spear 'shot' out.

At this moment, this former NPc super boss also reflects his extraordinary attack speed.

'Chanting', hand gestures, ventriloquist ......

Three-pronged.

Every time he shook his hand, three bone spears **** came out. The bone spear, which originally had a short cast time and a low cooldown, was completely like hanging under Oxtin's performance, without any cooldown. At this moment, it was as if he had become a fort...... The density of the bone spears simply exceeded the attacks of five necromancers of the same level.

The sky covered the sky, and the bone spear crackled like raindrops on the zombie dragon's body.

Although they had just reincarnated as undead, they were facing a level 120 dragon-like boss after all. The non-humanoid monster itself has the characteristics of high defense and thick blood...... Now the other party is a zombie dragon again, and the defense is simply high.

It's not just the surface of the scales, but also the rotting flesh...... Even Oxtin's crazy attack did not cause much damage to the zombie dragon, but instead 'provoked' the other party.

"Roar!"

The zombie dragon roared, and suddenly opened its mouth, and another mouthful of dragon flame spat out.

After the three or four bone spears that flew out of the 'shot' came into contact with this dragon flame, they were instantly burned into liquid...... There was a rattling sound in the air. However, the black 'colored' ball dragon flame was still unabated, and Oxtin hurriedly gave up and continued to attack, summoning three bone walls.

Rumble!

Rumble!

Rumble!

After a deafening explosion, Long Yan stopped, and the three bone walls had been completely melted...... However, Gao Fei took advantage of this time to 'approach' the zombie dragon