Leo was still a little worried, after Liu Xin left, he took a team of people to follow Liu Xin to set off, but unfortunately the speed was too slow, and when Leo and a few people arrived, Liu Xin had already left.

At this time, Leo and the others were stunned when they saw that the ground had become a slaughterhouse, bloody and pungent, with countless dead and wounded.

Rao is a person who has experienced countless winds and waves, and he can't help but jump.

The scene was so bloody that not a single body was intact, not even the Elven Queen's body was in tatters.

"Hey, let's see if there are any survivors, this kid is really ruthless, the entire elf clan, tens of thousands of elf clans, so there is no one!!" Lei Ao couldn't help but be a little angry when he saw the tragic situation on the ground, although he knew that Liu Xin would punish the elf clan, but he didn't expect it to be so ruthless and directly destroy the entire elf clan.

"My lord, there are some terrified kids here!" The voice of a guard came from the rear of the battlefield, and Leo also ran over quickly.

"Hey, it's good that he didn't attack these children, and there is a bottom line, otherwise I would have dealt with him myself." Leo looked at the hundreds of elf children who were trembling, and he was obviously relieved, Liu Xin still had a bottom line, and he didn't completely become a demon king.

"Take them back, take good care of them, they're terrified, too." Leo spoke to the guards and turned back, preparing to leave the slaughterhouse-like elven station.

"What do you mean, boy? Why did you wipe out all the elves? What do you let those kids do? Leo returned to the Holy Mountain, and after seeing Liu Xin, he rushed to Liu Xin's side, pinched Liu Xin's collar and said angrily.

"Whoever makes them arrogant, robbing my things is still so arrogant, they are just looking for death, if they make me unhappy, then go to death, and I will destroy them like this again. Didn't I ignore those elves? It's not cool to destroy the clan! Liu Xin let Leo carry it, and he didn't resist, after all, Leo was still his teacher.

"Hey, you kid, forget it, as long as you have your own bottom line, in your cannibalistic world, mercy will die a miserable death!" Lei Ao didn't want to say anything more after listening to Liu Xin's words, after all, what kind of world Liu Xin was in, Lei Ao had seen it from the old county magistrate's prophecy, and it was not bad for Liu Xin to become such a demon king, at least he could live.

"Wait, something happened!" Liu Xin's eyes changed instantly, and he said seriously.

"What's wrong? Why are you still surprised? Leo saw Liu Xin's expression and knew that something was wrong, so he directly let go of Liu Xin and asked.

"Those three dragons, the Shadow Dragon, are dead! But the two guardians of the Ancient Dragon and the Chaos Dragon are fighting, and they are rapidly approaching the Holy Mountain, hurry, notify Orlan to defend them! Liu Xin disappeared in an instant, and quickly rushed in the direction of the ancient dragon and the chaos dragon, if they were allowed to rush to the vicinity of the holy mountain, then there would be a catastrophe.

"Ancient Dragon, what's wrong? Why did you fight on your own? "Although Liu Xin knew that the Chaos Dragon would fall, he would fall at this time before he arrived first.

"He's fallen!" The ancient dragon's somewhat sad voice sounded in Liu Xin's mind.

"Ding, main quest 6, the direction of the attached world (3), destroy the monsters that enter the world to complete. Released a new main quest, main quest 6, the direction of the subsidiary world (final), help the ancient dragon destroy the chaos dragon, the task is limited to 3 days, reward an experience dungeon key, and open the portal back to the main world. If the mission fails, the main quest will be interrupted and you will be permanently unable to leave the subsidiary world. "With the words of the ancient dragon, the final main quest also appeared.

"So what do we do? Kill him? Liu Xin looked at the Chaos Dragon and asked.

"Hey, in order to protect this continent, you must kill him, otherwise the continent will be destroyed." The ancient dragon is also a little reluctant, after all, she and the Chaos Dragon are the first two lives to be born, and they have been guarding this continent, and once the Chaos Dragon dies, the ancient dragon will also disappear from the world.

"However, I don't have much strength anymore, even in my heyday, I may not be able to beat the Chaos Dragon, kid, help me!" The voice of the ancient dragon made Liu Xin almost cry when he heard it, he could feel the ancient dragon's attachment to the world, and the deep reluctance, but for his own responsibility and to protect other lives, the ancient dragon had to use his own life to destroy the chaos dragon.

"How can I help you?" Liu Xin asked solemnly.

"Hold him down, just drag him until I get close to him, and that's it. Now the only way is to detonate the dragon crystal and let us all die, but now I can't catch up with him at all, so I can only rely on you to help me hold him back. The ancient dragon said to Liu Xin firmly.

Liu Xin looked at the speed of the ancient dragon and the chaos dragon, it had indeed dropped a lot, and the speed after his transformation was a little faster than that of the chaos dragon, and he also knew that there were not many problems with this task. Immediately handed over a piece of bread, and the ancient dragon looked at it and knew what Liu Xin meant.

"Child, you don't have to bother, this thing may be useful to you, but it is useless to us, our strength comes entirely from dragon crystals, and only the unique energy of the goddess can replenish us・・・・・・" Before the ancient dragon could finish speaking, he was interrupted by Liu Xin.

"You try!" Liu Xin looked at the ancient dragon and said, Liu Xin knows that the system is powerful, isn't it just a small energy? Bread can definitely be replenished.

"Hey." The ancient dragon sighed faintly, knowing Liu Xin's persistence, and didn't say more, and directly swallowed the bread handed over by Liu Xin.

"Hey, it does have some effect, but it's too little, and if you want me to return to the same as the Chaos Dragon, I need at least a million amounts of bread, so I still can't do it." The ancient dragon was also a little surprised, Liu Xin's bread could actually help him recover, but after thinking about it, he didn't say much, after all, he was a person who belonged to the same world as the goddess, and the goddess could create this world, Liu Xin just let himself recover a little, and it was still a little worse than the goddess.

"Million, it seems that there is really no way, then I'll catch up with the Chaos Dragon, you... Liu Xin didn't have the slightest taboo, he said a word directly to the ancient dragon and quickly flew towards the chaos dragon.

"Kid, come on, I hope you can always keep your bottom line!" The ancient dragon's blessed voice also reached Liu Xin's mind.

Liu Xin used his fastest speed to finally catch up with the Chaos Dragon before the Holy Mountain, and the Chaos Dragon's body was also covered with wounds of all sizes.

"Chaos Dragon, you, still fallen!" Liu Xin also wanted to scare the Chaos Dragon, and began to pretend to be a magic stick, if he fought, even if the Chaos Dragon was weak, maybe he couldn't even carry a move, so he could only use words, and the magic stick believed to be a good choice.

"What do you mean, boy?" When the Chaos Dragon heard Liu Xin's words, he stopped directly, he felt that Liu Xin had long known that he would fall, so did he know more things?

"Hehe, don't you know what I mean? You should know that I am not from this world, so what is the point of you bullying some children like this? Liu Xin didn't know how to make a magic stick, and what he said was also messy.

"Boy, what are you doing here? For me, you are also a child, I will become the king of this world, no one can stop it・・・・・・" When the Chaos Dragon was still speaking to Liu Xin, the ancient dragon rushed directly to the side and hugged the Chaos Dragon, because of Liu Xin's delay, the ancient dragon caught up with the Chaos Dragon.

"Ancient Dragon, why are you so rigid? As long as I become a king, you will be a queen, why should I protect this world for the sake of the sleeping goddess? Isn't it good for us to rule the world together? The Chaos Dragon also felt the aura of destruction coming from the ancient dragon's body, and said as he struggled, hoping that the ancient dragon would let go of itself.

"Chaos Dragon, you don't need to say it, let's leave together, I can't watch you destroy this beautiful world・・・・・・" The ancient dragon's eyes hugged the Chaos Dragon with tears in his eyes, and a dazzling light appeared on his body.

A dazzling light flashed, and Liu Xin's eyes couldn't see anything, only a white expanse.

The ancient dragon divided part of its strength to block the impact of the self-explosion for Liu Xin, but the dazzling light also made Liu Xin's eyes temporarily blind and unable to see the situation outside.

I don't know how long it took, but when Liu Xin's eyes recovered, all he saw was the devastated earth, and the half-section of the holy mountain that floated towards the sky. And on the Holy Mountain, there is also the breath of Leo and several people, all of whom are protected by the ancient dragon, and float in the sky with the Holy Mountain.

"Ding, the host has completed the main quest 6, the direction of the subsidiary world, now the reward will be issued, the host still has two hours, and after two hours, the portal back to the main world will be opened!" The prompt sound of the system also appeared in Liu Xin's mind, and Liu Xin's hand also had a huge stone key, the whole key was bigger than Liu Xin's palm, and it was like a dagger in his hand.

"Two hours? Hurry up! Liu Xin flew quickly towards the holy mountain floating in the air.

"Teacher, I'm leaving!" After Liu Xin saw Leo, he said respectfully, this is the first time Liu Xin has called him teacher in front of Leo.

"Gone? Where to go? Leo asked, somewhat confused.

"I'm going back to my own world!" Liu Xin said in a low voice.

"Haha, it's a good thing, boy, you should go back too, you don't belong to this world, the colorful main world is where you should be, work hard, just come back and see me when you're free." Teach you one last trick, remember. Leo laughed and put his finger on Liu Xin's head, and a memory also appeared in Liu Xin's mind, which was Leo's memory of hidden momentum, Leo stripped all the memories of hidden momentum and passed it to Liu Xin's mind.

"Teacher, you?"

"Haha, do you think I still need to hide my momentum in this world? But you're different, the water in your world is too deep, and if you don't know how to hide yourself, you'll die a miserable death. Leo didn't care about his memory of hiding momentum at all, although after giving it to Liu Xin, he didn't know how to hide his momentum, but he believed that Liu Xin needed this memory more than himself.

"Huh!" Liu Xin directly pulled out the anger of grief, handed it to Leo, and said: "Teacher, this sword was forged by myself, but there is a certain will to protect this world added to it, I can't bring it back, I can only hand it over to you, I hope you can find a master for him who is dedicated to protecting the world." ”

"Rhapsody, list the elixirs that increase lifespan, I can change them!" After Liu Xin handed the sad anger to Leo, he asked the system in his heart.

"Ding, a total of 3.51 million kinds have been searched, and a total of 170,000 kinds can be exchanged at present, from high to bottom, longevity pill, the exchange requires 1 point of fourth-level energy, and it can increase the life span of 100 years after taking it, and each person is limited to 1 time; Zengyuan Dan ・・・・・・"