Knock knock!

Thousands of feet deep underground, a man and a beast fought in a narrow cave, bursts of violent energy spread out, shaking the underground world trembling, and many caves and passages around it collapsed and annihilated.

"Go!", Yun Fan's figure was like a bolt of lightning, flying away around the bloated body of the Yin Yang Beast, and under the urgency of his hand, hundreds of red flame sword lights slashed away from all directions.

The Yin-Yang Beast opened its mouth and let out a rapid cry, and a circle of red and blue intersecting light appeared on its body, and it effortlessly ejected all the sword light into the air.

"Come again!", a hint of color flashed in Yun Fan's eyes, the function of this aperture is similar to a powerful shield, which is difficult to break through with ordinary attacks, and he is all together, and hundreds of red flame sword lights are combined into a void giant sword, exuding an earth-shattering strong aura, and slashing down with a roar.

Bang! The Void Giant Sword shook the red and blue light shield hard, and the powerful force exploded on its surface, shaking the underground world, but the red and blue light shield only trembled on the surface for a while, and soon recovered as before.

"What a strong means of protection!", Yun Fan's pupils shrank, and he was about to make the next attack move, but he saw a huge mouth of the Yin-Yang Beast below, and a huge pillar of fire gushed out.

"Let's go!", Yun Fan's figure flashed, and he narrowly avoided it, but saw that the cave wall behind him was washed by the waves of fire, and a large area melted in an instant.

The Yin-Yang Beast was unforgiving, and the giant mouth spewed out a few more flames, chasing Yun Fan from several directions.

The flame spewed out by this beast's mouth is a strange fire between heaven and earth, and after more than 10,000 years of gestation in its body, the power is enough to burn the mountains within a radius of hundreds of miles, Yun Fan will never dare to follow easily, the best way to deal with it is to keep wandering, looking for opportunities to fight back.

"Nine Dragons Howling Sky!", in a corner of the cave, after almost being prepared, Yun Fan brought up several tornado pillars with both hands, and the huge wind pressure destroyed most of the several flames that were pursuing.

Seeing that several flames could not be used for a long time, the Yin-Yang Beast had a huge mouth, and after its bloated body rolled, a huge amount of ice water erupted from it, enveloping the entire cave in an instant.

The temperature dropped rapidly, and the cave, which was originally hot and dry due to the battle, turned into a cold prison in just a few breaths, and even the air quickly froze.

"Not good!", Yun Fan was taken aback, as soon as he broke some ice crystals, he was surrounded by layers of surging ice cubes.

All the space of the entire cave was frozen and turned into a thick layer of ice, and Yun Fan, who was sealed in the center of the ice, maintained a pinching posture and his expression was lifelike.

The Yin-Yang Beast let out a comfortable cry, and its huge mouth opened up, and it wanted to swallow Yun Fan into its stomach and digest it.

"Think beautiful!", but at this moment, Yun Fan, who was sealed in the ice crystals, secretly shouted, and a demonic blue light appeared around his body, and layers of cyan scales appeared on the surface of his body.

Transformed into the body of a heavenly demon, Yun Fan's divine power could shake the mountains, and the ice crystals around him shattered one after another, and in the face of the huge mouth of the blood basin that was close at hand, a bright blue light fist shadow roared out.

Bang! The Yin-Yang Beast let out a miserable scream, and its bloated body quickly retreated, only to see a sharp fang in its giant mouth be broken alive, and a large amount of blood gushed out.

"Fight again!", Yun Fan let out a loud whistle, and his figure suddenly trembled, appearing in the left rear of the Yin Yang Beast's head, and a right hook punch distorted the beast's face, and the domineering force made its body turn over in a circle and slammed it on the ground.

Yun Fan's figure continued to shine, appearing in several directions in an instant, and several iron fists smashed towards several different parts of the Yin Yang Beast, about to beat this beast into a cripple.

But at this moment, a red and blue intersecting light shield appeared on the surface of the Yin Yang Beast, and several iron fists fell on it, only making the light shield tremble for a while, but it failed to break it.

Taking advantage of this gap, the Yin-Yang Beast turned its head and let out a fierce roar, and the two long tentacles on its skull lit up, and two arcs of electricity shot out.

Yun Fan didn't dare to be careless, and opened a star barrier with one hand, and a faint white light protected him behind him.

In the next second, two arcs of lightning struck the star enchantment, and after most of the energy was canceled out, there was a trace of it that drilled into Yun Fan's body, making him feel a little paralyzed.

"Not good!", Yun Fan's complexion changed, and he immediately urged the Yuan Force of his whole body to chase down the remaining power that entered his body.

But at this moment, the huge mouth of the Yin-Yang Beast below, a white pillar of light erupted, exploding the star enchantment into pieces, Yun Fan spewed out a mouthful of blood, and his body quickly shot backwards and flew away, breaking through several passages in a row, and quickly escaping outward.

Seeing Yun Fan fleeing, the Yin Yang Beast did not give up, and its bloated body quickly pursued forward.

"Boss, the arc emitted by the two tentacles of this beast has a hint of law aura, with your current means, it is difficult to completely dodge", inside the space ring, the little black said with a warning color: "Once you are paralyzed by this arc, if you can't dodge it for a short time, it will be very dangerous."

"I know", Yun Fan nodded, his body quickly retreated, he wanted to lure the Yin Yang Beast out, fighting underground was not good for him.

After chasing for a while, the Yin Yang Beast, which did not have an advantage in speed, showed impatience on its face, and the two tentacles on the top of its head were surrounded by electric arcs.

"Soul Suppression!Turning Sword", Yun Fan's eyes widened, if he was paralyzed by the arc, he would be in danger of falling, and immediately sacrificed the Soul Suppression Bell.

Just as the two arcs of lightning shot in, a sonic sword shot out, piercing through the Yin Yang Beast's many defenses, stinging the beast's divine sense, causing it to look up to the sky and let out a roar of pain.

On the other side, Yun Fan's body was like an electric shock, and his fast-moving body was paralyzed for two breaths.

The two sides went back and forth, but they fought equally, and they both suffered from each other's methods, which was a little uncomfortable.

"It's so dangerous!", Yun Fan wiped the cold sweat on his forehead, if it weren't for the Divine Consciousness Sword of the Soul Suppression Bell to delay the attack of the Yin Yang Beast, the two breaths that were paralyzed before, would have died in Huangquan.

The Yin Yang Beast that had eased up, its huge mouth of the blood basin opened wide, a dazzling white light exuded a strong aura, and a terrifying energy that destroyed the world was brewing.

"Oops", Yun Fan only felt his scalp tingle, and quickly fled towards the ground, this full blow of the power belonging to the Xuantian Realm level broke out in such a closed place in the underground world, I was afraid that he would take off a layer of skin if he didn't die.

"It's too late", feeling the terrifying power behind him erupt, Yun Fan opened the star enchantment with both hands, wrapped his whole body tightly, and shouted hurriedly in his mouth: "Third child, protect me together."