The moment Han Chen entered the dragon's mouth, there was a golden passage in front of him, the passage was dozens of meters in size, it turned out that there was such a scene inside the dragon's mouth.

There was nothing but the glittering passage, which extended forward, or downward, to be exact. Not far ahead, a whirlpool appeared at the end of the passage.

Yes, it's just a transit channel, and the real source of fire energy is behind this vortex. At this time, there was still a trace of golden liquid left in front of the whirlpool.

These liquids float in front of the whirlpool, looking at this frame, it is obvious that these liquids come out of the whirlpool through the direction of floating, and then, through this huge channel, float to the dragon's mouth outside.

The dragon's mouth, which was the size of a meter, slowly flowed down these liquids, and Han Chen sensed a faint golden essence aura from these residual golden liquids.

He raised his hand and sucked this energy into the palm of his hand, and in the blink of an eye, this energy was absorbed by him, and a faint force of rules was replenished into Han Chen's body. Although the power of the Golden Rule was not much, it was enough to make Han Chen's heart move.

The golden liquid here is really extraordinary, if you can absorb more, the power of the rules of gold will definitely be greatly improved.

It's a pity that Lu Ya's soul broke in and cut off the entire golden liquid, Han Chen didn't know how he did it, let alone what he wanted to do, but Han Chen would definitely not let Lu Ya do this.

He must find out Lu Ya, and he wants to see what kind of world is behind this whirlpool! Han Chen took a deep breath, and his body instantly rushed into the whirlpool.

The powerful golden energy struck at Han Chen, and the sharp energy almost wanted to tear Han Chen apart, but the protection on Han Chen's body protected him to the death. Layers of sparks slammed into his body with golden energy.

There was a powerful suction force in the whirlpool, and Han Chen felt like a small boat in the angry sea, which could be destroyed at any time. Time passed little by little, and I don't know how long it took, he felt his body lighter, and his whole person appeared in a soft crimson gold space.

The space was not large, only a hundred square meters at most, and the surrounding area was filled with soft gold energy, which was emitted by the golden ore below.

Seeing these ores, Han Chen somewhat understood the origin of this golden mountain, the sea of fire was set up by huge flint ore veins, and this golden mountain was afraid that the same would be true, and there were faint bursts of strange energy from below that Han Chen could feel.

Those strange energies were the energy of a huge formation, and it was this formation energy that tightened the golden and stone veins below, and then extracted the gold energy from it.

It then overflows to form a dangerous place like Dao Mountain, and the gold energy that is abundant in Dao Mountain is then fed back to the gold and stone veins. Make the gold and stone veins more pure and powerful. This cycle is like the cycle of fire.

Sure enough, the Sea of Fire and the Sword Mountain were both the masterpieces of an ancient powerhouse. It's just that what does this person want to do when he creates this sea of swords and fire? Is it just a momentary fun, or does it have another deep meaning?

Han Chen's mind surged for a while, but suddenly, he looked at the mineral vein gold stone below, the essence of light in his eyes surged, and he raised his hand to grab it.

The powerful suction force almost grabbed the golden stone in his hand, but only one stream of golden energy was sucked by him, and the golden stone there and the abnormal movement in the golden stone were not affected.

Hey...... Han Chen's eyes showed a look of surprise, he obviously sensed that there was a surge of soul energy in that golden stone, but why couldn't he help the other party at all?

"Boy, you're not so brave as to dare to break into here. You're killing yourself, quack ......" A cold voice with a sinister smile sounded in Han Chen's ears.

Lu Ya's face appeared on the surface of the golden stone, it was a golden face formed by pure gold energy, and the face at this time was full of pride and gloom. At the same time, the surrounding gold energy quickly changed.

Therefore, the golden energy began to surge, and strange runes appeared in these golden energy, and a powerful power was formed in this golden energy little by little. Then, there was the sound of gold and iron.

The voice grew louder and more urgent. These golden energies did not even launch an attack on Han Chen, but instead emitted a sound to produce a powerful sonic attack.

Han Chen was shocked by this attack, he wanted to get rid of the disadvantage in front of him, but the space around him was wrapped in fire energy, and he couldn't leave at all. Even if he forcibly urged the energy to destroy the surrounding gold energy.

However, the surrounding golden energy was replenished by the overflowing energy in the formation below, and it was only after being broken open by Han Chen that it was immediately recovered. Han Chen was actually trapped in this.

The surrounding sounds became louder and louder, and Han Chentou felt like he was about to be shocked by this sound, and his mind couldn't settle down at all, let alone condense energy to fight.

If it goes on like this, I am afraid that this sound attack alone will shatter Han Chen's mind and soul, and directly kill Han Chen on the spot. Lu Ya knew that it was impossible to urge the surrounding golden energy to kill Han Chen.

He only had his soul body left, and his strength was not good, so he couldn't exert the power of gold energy at all. Moreover, Han Chen's methods were strange, and it was too difficult to kill Han Chen with such an attack.

And using sonic attacks is the most secure and effective attack, and for Lu Ya, who only has a soul body left at this time, only this method can make him turn defeat into victory.

Not to mention, in this space, he was familiar with the road, and it was too simple to use the power of the formation here to create a strong sonic attack. This is also the secret he discovered after accidentally breaking into this place back then.

It was precisely because of this secret that he subdued the Longquan Sword hidden here. It's just that what made him feel hatred in his heart was that the Longquan Sword was snatched by Han Chen, to be exact, it was swallowed by Han Chen's spirit sword.

The more he thought about it, the stronger his heart became to kill Han Chen, and the sonic attack became stronger and stronger, Han Chen held his head in both hands, and his whole person was on the verge of collapse, I was afraid that it would not be long before his entire head might explode.

Lu Ya didn't know how sour he felt in his heart, he finally suppressed Han Chen, and he could finally kill this person to take revenge. Thinking about the grievances that had just been calculated, he couldn't help but feel a surge of anger in his heart, and seeing that Han Chen was about to finish, he felt a burst of joy.

"Boy, I didn't think it would be like this, quack...... The head burst open, that's really miserable......" Lu Ya said in a strange way. How can there be half a point of superior temperament.

It's just that before he said this, his entire face suddenly froze, and his expression was stunned.