At this moment, Lu Xuexin kicked over, and actually kicked the wolf demon directly to a tree, and the leaves fell one after another.

The wolf demon got up again, and when he saw Lu Xuexin's eyes, there was a hint of fear, and he roared and immediately pulled out his legs and left.

"Good shot. Luffy Fei praised as he withdrew the Demon Suppression Sword.

"Thanks for the compliment. Lu Xuexin smiled slightly, ecstatic.

"Go ahead and ask. Luffy quickly took a step.

Lu Xuexin clasped her hands behind her back and followed behind Luffy with a smile.

Suddenly, Luffy grabbed the Demon Suppression Sword behind him and stopped.

"Be careful!" Luffy reminded.

Bang!

Several ancient trees fell to the ground, and a black shadow like a mountain peak suddenly met Luffy and the others, and the earth trembled slightly with every step the black shadow took out.

It was a black bear, six meters tall, its body was as black as charcoal, its palms were several times larger than Luffy's head, and its turquoise eyes gave people endless fear.

"It's a change for the bear demon this time. Lu Xue smiled bitterly.

Roar!

The bear demon roared, setting off a wave of qi that crushed Luffy and the others.

"Bang!"

Luffy took off the Demon Suppression Sword and waved it casually, and a powerful force was like a bamboo, cutting through the wave of qi.

"Damn, these monsters are too unfriendly, aren't they?" his eyes froze, and he prepared to deal with the bear with one move.

"Wait, it doesn't seem to have malicious intent. Lu Xue hurriedly stopped Luffy.

"It's all done and there's no malice?" Luffy naturally wouldn't let his guard down, but at this time, the black bear had already turned around and left.

"Look, I guess it's just here to say hello, but in a weird way. Lu Xuexin couldn't help laughing.

Luffy shrugged helplessly, put away his sword and continued to move forward.

Soon, white fog began to rise around them, and Luffy's vision began to blur.

Roar!

There was another dull and ancient roar, like thunder, and in an instant, this milky white mist became disordered.

Lu Xuexin inadvertently inhaled a little, feeling a little drunk.

"Luffy, this white fog ...... Poisonous. Lu Xue's heart shook and leaned against a tree next to her.

Luffy was in a hurry, and hurriedly urged the life force to suppress the toxins that were invading his body for Lu Xuexin.

"You're too careless, this level of poison, as long as you are a little careful, it is impossible to invade your body. Luffy whispered reproach.

Lu Xuexin pouted, quietly glanced at Luffy Fei, and snickered in her heart.

She admits that she did it on purpose.

"Can you walk?" Luffy asked in a low voice.

"No, you can't. Lu Xuexin tilted her head and said.

"Okay, I'll carry you. Luffy rolled his eyes helplessly and crouched down.

Lu Xuexin immediately lay on his back.

Luffy carried her on his back and continued to walk forward, quickly stepping on some bumps, and when he looked down, he saw that they were all skulls and white bones of humans or monsters.

"Luffy ...... Stop...... Stop for a moment. Lu Xuexin whispered in Luffy's ear in fear.

"What's wrong?" Luffy looked back at her, frowning slightly, and then followed her gaze, also slightly stunned.

He could clearly see that there was a giant python coiled next to the rocks in front of him, estimated to be more than 20 meters long.

The giant python's whole body was wrapped in golden scales, and a pair of dark red dragon wings grew at seven inches, and the scarlet snake letter stretched and shrunk, examining the not very fat flesh in front of it.

"Lu Xuexin, what are you shaking with?" Luffy teased.

"I didn't ...... No, I don't. Lu Xue said in her heart.

"Don't be scared to pee. As soon as Luffy said this, a sharp pain immediately came from his waist.

Damn! Pinch me!

"Besides, I'll strangle you. Lu Xue blushed with anger.

"Okay, okay, let's not talk about it. Luffy had no choice but to show weakness and continue to look at the giant python.

The giant python didn't seem to take Luffy and the others seriously, and the golden snake pupils quickly extinguished, and the surroundings were terrifyingly quiet for a while.

"It's been a long time since I've seen a human coming. The golden python suddenly spoke.

"Didn't you see it today?" said Luffy.

"Hmm......" The golden python opened its eyes again, "You are here, but you are here for the Holy Heavenly Sword?"

Luffy Fei and Lu Xuexin nodded at the same time.

"In that case, let's go over. The golden python said, looking at the rock wall on the side.

"Roll-roll-roll-roll-"

Suddenly, a stone door opened on the rock wall, which made Lu Xuexin slightly stunned, but immediately felt ecstatic in his heart, because the breath wafting out of the cave was simple and sacred, which made people yearn for it.

Luffy Fei's face was unwavering, as if he had seen through everything.

"I didn't expect that there were demonic creatures in this world. Luffy's mind suddenly sounded the voice of the demon, which made the golden python's body shake violently, but quickly closed his eyes again.

"Let's go inside. "Luffy Flyway.

"Let me go, I'd better go by myself. Lu Xuexin playfully blinked like Luffy and slid off his back.

After entering the cave, Lu Xuexin took out a luminous stone and used it for lighting.

"Luffy, do you feel a little hot?" Lu Xuexin fanned with his hand.

"Sort of. Luffy Flyway.

The two of them continued to move forward, and the temperature was very bearable.

Luffy Fei had no choice but to protect his body with immortal power to isolate this blazing feeling.

Lu Xuexin also urged the life force, trying to isolate this heat.

After turning a corner, the blazing sensation suddenly rose to a new level, and even if Luffy and the others resisted with all their might, they still felt like they were going to burn.

It's hot! It's like being in a fire, and the flames are swallowing itself little by little.

"I can't. Lu Xuexin knelt on the ground with a pale face.

"Don't give up, don't forget that you once said that there is no one in the Lu family who is afraid of death. Luffy Fei picked up Lu Xuexin, the corners of his mouth curled, revealing an encouraging smile.

Lu Xuexin showed a charming smile with difficulty, nodded lightly to Luffy, and then looked firmly ahead.

The feeling of heat is getting stronger and stronger, to the point that even Luffy Fei can't hold on, feeling the heat coming from his skin, Luffy feels that he is already familiar.

Another turn, at the end of the passage, a red light could be seen, Luffy was overjoyed, wiped the sweat from his face, and quickened his pace.

"End ......" Lu Xuexin said hoarsely with a smile on her face.

When she stood at the end, she was dumbfounded, and there was a ...... in front of her Flame Hell!

The endless fiery red magma, the bubbles tumbled, burst open, the blazing magma scattered, the temperature was so high, it was self-evident, falling into it, absolutely no bones remained.

Poof!

Suddenly, a black shadow leaped out from under the magma, the dark red scales snapped together loudly, the blood-colored wing membrane unfolded, and with a roar, blazing flames erupted from its mouth.

"It's been a long time since humans have come. The blood-colored eyes flickered, and it looked at Luffy and the others.

"What the hell are you?" Luffy asked unceremoniously.

"I am the Demon King of the North, the Rainbow Dragon. The rainbow dragon lifted his scaly right arm and made a pinching gesture.