The stand-in talisman is a talisman refined by ancient powers, which has the characteristics of replacing low-level martial artists, and Xu Yun actually has it, which is beyond Nangong Yi's expectations.

"Just now he used a stand-in talisman, and at the same time he also used a hidden talisman, the Xu family has a lot of secrets!" Nangong Yi was expressionless, his strength was running, and he slammed on the stone gate with all his strength.

Rumble!

The cave shook, but the stone gate only shook twice, and it was not broken.

"Cast from Tiangang stone. Nangong Yi finally changed his face, Tiangang Stone is extremely hard, it is an excellent material for refining divine weapons, this kind of material is not easy to find, and the general big sects can't take out much, but the Divine Sect actually used him to cast the cave gate, with his strength in the Linghai Realm, he couldn't break the stone gate of Tiangang Stone at all.

"Don't waste your efforts, this door is cast by Tiangang stone, and you can't break it even if your realm is high. Outside the door, Xu Yun sneered when he heard the sound and walked towards the middle passage.

"I've long seen that he's uneasy and kind, if you don't listen to me, you can't get out now. "Little Thunderbolt Eagle Road.

"This door can't be broken, so we have to find another way out. Nangong Yi ignored the little thunder eagle, looked worried, and walked towards the passage.

"Get me out, I'm not with him. ”

The little thunderbolt eagle did not follow Nangong Yi, and shouted loudly at the gate.

"Do you hear it, let me out, I'm really not familiar with him. ”

"As long as you let me out, I will agree to whatever you ask. ”

“......”

He shouted for a long time and no one responded, so he had to follow Nangong Yi's footsteps.

"Aren't you unfamiliar with me, what are you doing with me?" Nangong Yi glanced at the little thunderbolt eagle who came with him.

"I'm just talking, if he does open the door and I take advantage of the situation to kill him by surprise, can't you go out too. Little Thunderbolt Eagle said cheekily.

"Hmph. ”

Nangong Yi snorted coldly and stopped talking.

Walking forward, Nangong Yi found a problem, the moisture in the air was gone, and the water stains under his feet were getting less and less.

After continuing for 200 meters, there were no more water stains, and the temperature in the cave had risen sharply.

"Xu Yun said before that there is an Earth Fire Cave, and it seems that the front is where the Earth Fire Cave is located. Nangong Yi whispered.

He quickened his pace and walked five hundred meters, the hot breath came to his face, the heat wave here was already comparable to the magma world he had been in, you know, his current position was far from the location of the earth fire.

"What is the fire of the earth, and the heat released is terrifying. ”

He was horrified in his heart, and after walking another hundred meters, he couldn't move forward, because the heat here was already terrifying enough to incinerate his body, so he immediately sat down cross-legged and cultivated the Immortal Heavenly Gong.

"Ahh

The flame energy entered his body, his body trembled, trembled violently, and he howled again and again.

"It's going to be so hot in the morning. He immediately realized that the heat energy here is very different from the heat energy of the magma world, if the heat energy here is the temperature emitted by the sun, then the heat energy of the magma world can only be regarded as the heat released by the bonfire in the world.

At this point, it was impossible for him to withdraw, so he could only grit his teeth and insist.

It's just that the first wave of heat energy made him miserable, and he almost fainted, and in the end, although he survived, he was also tired and half dead, and the spiritual liquid in the spiritual sea was less than a CD or more.

Nangong Yi rested for a while before continuing the next round of cultivation, and he fell into extreme pain again.

"This is not something that the beast can bear. ”

Behind the cave, the little thunderbolt eagle looked at Nangong Yi who was crying wolf, his body was agitated, and he retreated, not daring to approach.

After running the Heavenly Skill several times in a row, Nangong Yi absorbed more than one time, and every time he survived with a miserable scream.

After absorbing the heat energy fifteen times, the spiritual liquid in his spiritual sea was about to bottom out.

"You can't use spiritual power anymore. Nangong Yi said tiredly.

He thought about it, from this moment on, he would not use spiritual fluid to reduce the pain in his body, and simply rely on his physical body to cultivate the Immortal Heavenly Skill.

He had to do this because he didn't have spirit stones, didn't preserve his strength, and couldn't get out of here.

"Let's get started. ”

Nangong Yisheng breathed a sigh of relief, and with a nervous and uneasy mood, he activated the Immortal Heavenly Skill.

"Shhh The flame energy only entered the body for a wisp, and his physical body instinctively reacted, tightening.

"If you want to come, have a good time. ”

He let out a loud shout and violently operated the heavenly power.

"Ahh

It was a hundred times more painful than the previous rounds of absorbing the heatwaves, and his whole body was convulsive and shivering.

"Hold on, hold back, hold on. He kept telling himself that he kept himself awake, the heavenly power was running, and the heat energy was absorbed little by little, and the time it took him to refine the flame energy into his body this time was even longer than the time he had taken in the previous rounds of vacation.

However, when he cultivated like this, the miracle of Heavenly Gong was fully reflected, and the heat energy he absorbed this time was worth the amount absorbed in the previous three times.

Nangong Yi was pleasantly surprised, and he didn't care about being tired, and cultivated again.

Once, twice, three times...... Nine times, after the tenth time of cultivation, his body was a little smaller, and his golden luster skin, which was not too obvious before, became a lot darker.

"When the color of my body is all transformed into yellow, I will be considered to have practiced to perfection in the first layer of the Immortal Heavenly Gong. ”

He started cultivating again. This time, he walked forward two hundred meters, put aside distracting thoughts, and deeply immersed himself in refining his body cultivation.

After refining again and again, his body became numb and no longer so painful.

I don't know how long it took, Nangong Yi felt that his body could no longer tolerate the heat, opened his eyes, and turned over.

"The first level of immortal heavenly skill is complete. He looked at the small circle, completely transformed into a golden flesh, and his heart was extremely happy.

"My physical body at this time, the Spirit Sea Realm martial artist is afraid that it will be difficult to hurt me. ”

Nangong Yi carefully felt the hardness of his body, smashed his fist on the wall of the cave, and said to himself.

"It's not easy to stay here. ”

He came back to his senses, thinking that he was still trapped here, glanced at the little thunderbolt eagle, frowned, and said, "Wait for me here, after finding the exit, I will come to pick you up." ”

"Good. The little thunderbolt eagle was afraid of high temperatures, Nangong Yi didn't leave him, and his heart warmed.

Nangong Yi walked towards the depths of the Dao Cave, his Immortal Heavenly Skill first layer quenched his body, and the surrounding heat energy couldn't hurt him.

But he walked a mile and paused, not daring to go forward.

A hundred meters in front of him, there was a large space, where there was a breath that made his heart tremble.

And a foot away from him, the air was beating like a flame, because it was so hot that the air was burning.

Even if his body is strong, he can feel that if he takes a step forward, he will die.

"What the hell is the object in the space ahead?" he really wanted to know what was emitting such intense heat.

"It's earth fire. ”

The voice of the temple spirit sounded in his head.

"Temple Spirit, you're awake. Nangong Yi exclaimed in surprise.