"Do you have to evolve?" Marin muttered. But it's impossible to think about it, in order for the poisonous heart to evolve, the level of the wearer must reach the corresponding level, he has already reached level 98, and if he joins to evolve, he will evolve when he is promoted to level 98.

Surprised, Ma Linshu used his mind to investigate the internal storage space of the Poisonous Heart, but found that it was an item emitting a faint blue light, and when he looked closely, it turned out to be the tattered little wooden box he had bought at the auction before.

At this time, he recalled Linglong's introduction to this small wooden box: this box glows when it senses extremely heavy yin qi.

Thinking of this stubble, Ma Linshu was even more surprised. Today's Dragon Domain Yin Qi is already heavy, if this is the case, then he would have already discovered that something was wrong, so why wait until now?

Taking out the small wooden box and holding it in his hand, Ma Linshu looked up and down, but he couldn't see the reason.

"Maybe the yin qi here is heavier than the place I walked yesterday!" Marlinshu guessed.

After entering the Dark Dragon Domain, his perception of yin qi was no longer so sensitive, just like eating meat every day and finally forgetting the taste of meat.

In order to confirm his guess, Ma Linshu took the small wooden box and turned it back, but he didn't expect to take two or three steps back, and the blue light on the small wooden box disappeared, and after two steps forward, it emitted blue light again.

"What's in this box?" Marlinshu was curious.

When he bought the box, he thought he would open it and see what was inside. But later, he was interrupted by a lonely grave for thousands of miles, and he went to the gold panning city to make a wave, so he forgot about it.

I remember that Linglong said that there was no way to open this box, but Ma Linshu didn't think so, because he had a yin and yang furnace that could refine everything in the world.

However, Ma Linshu didn't want to use the big killing weapon of the Yin-Yang Furnace for the time being, he had the Jiaolong Divine Sword, which was an artifact, and it couldn't be split.

It's better to act than to move, and after looking around, Marlinshu found a fairly smooth stone. He walked over and placed the small box on the stone, and Marin raised his sword and slashed it.

"Ice Slash!"

Ma Linshu shouted violently, and the Jiaolong Divine Sword was wrapped in a faint layer of blue light, and the air became cold and crackling.

"Boom!"

A loud bang came, as if a small nuclear warhead had been detonated, and a mushroom cloud rose into the sky, and the furious energy swept in all directions.

Smoke and dust rose everywhere, rocks pierced the air, and the Marlin tree was tossed to the ground by the violent energy, and smashed to the ground.

"MD, is it split?" Rising from the ground, Marlinshu patted the dust off his body. Looking at the stone where the small box was placed, there was no trace of it, and it was actually shattered by his sword.

In the rubble, Marlintree found the small wooden box.

The small wooden box did not change anything, not even a single scratch.

"Hell yes!" Ma Linshu muttered, the power of his sword is not small, even if he is hit by a fairy beast-level boss, he has to lose his skin, but this small box is not damaged at all.

"I can't say that I can only use the Yin and Yang Furnace!" Marin said in his heart.

It was better to act than to move, he set up the yin and yang stove on the spot, and threw the small box into it as soon as he gritted his teeth.

Pressing the button to start forging, two intertwined and circling fish suddenly appeared in the furnace, generating the power of yin and yang that was enough to refine everything in the process of rapid rotation.

The marlin tree does not control the temperature, and the furnace is refined at the highest temperature as soon as it is opened. However, his gaze never left the small box in the furnace, and if he noticed that something was wrong, he would lower the forging temperature.

Under the power of yin and yang, which can refine everything, the small wooden box lasted for more than ten minutes before it began to react, and it was not melting, but a layer of tiny bubbles formed on the surface. After a few more minutes, the small bubble finally burst, and the top layer of the box began to melt.

Ma Linshu finally secretly breathed a sigh of relief, and his heart was in front of Lao Tzu's yin and yang furnace that could refine everything in the world, do you still want to turn the sky upside down?

The power of yin and yang in the furnace cavity became even more violent, and even made a whining sound, which was the sound of the yin fish and the yang fish rotating rapidly, which was the performance of the yin and yang furnace in full force. This phenomenon did not occur even when he was refining the Bloodstone and Tiger Bone Divine Iron, so it can be seen that the materials of this box are obviously much stronger than the Bloodstone and Tiger Bone Divine Iron.

With the Yin and Yang furnace in full swing, the surface of the small wooden box was finally completely melted, and a pool of transparent multicolored liquid appeared at the bottom of the furnace, which looked like glowing spring water.

Of course, it is definitely not water, because with the current temperature inside the Yin and Yang Furnace, let alone just a little water, even a whole lake can be steamed dry in an instant.

The Yin Yang Furnace was still running at maximum firepower, and began to refine the inner layer of the box, as long as this layer was refined, the contents of the box would be able to show the true face of Lushan.

But then the box began to shake, and it was bouncing at the bottom of the furnace like clockwork.

"I'll go, there shouldn't be an ancient-level evil spirit in this box!" Ma Linshu was shocked, he hadn't thought of this stubble before, he just wishfully thought that there was something in the box. Now that I think about it, there is a lot of Qiankun in this box, and it can't be said to be the same as the Demon Sealing Tower, which has many powerful and boundless evil spirits sealed inside. If that's the case, you're in trouble.

"No, you can't practice anymore!" Ma Linshu wanted to turn off the Yin-Yang Furnace, but as soon as his hand got close to the furnace, he was shaken open by a super strong anti-shock force, and he couldn't touch the button at all.

"It's the end of the calf!" Ma Linshu was so frightened that his face was pale, and he didn't bother to care about the Yin and Yang Furnace, so he summoned the Heavenly Gold Sacred Ox and retreated backwards, retreating thirty or fifty meters before stopping. When I looked at the yin and yang furnace again, I found that there were two fish on the originally dark furnace body, a yin fish and a yang fish.

The Yin Fish and the Yang Fish swam quickly on the body of the furnace, transforming the endless power of yin and yang between heaven and earth, refining the small box in the furnace.

Under the suppression of the violent power of yin and yang, the violently beating small box finally quieted down, and the yin and yang fish on the furnace body also returned to the furnace cavity.

When everything calmed down, Marin Tree came to check again, only to see that the inner layer of the small box had begun to melt.

"Whew!" Marin secretly breathed a sigh of relief.

He is full of confidence in the Yin Yang Furnace, and he is not afraid of any anti-heaven monsters in the box. Even if there is, it is nothing in front of the power of yin and yang that can refine everything.

......

Time passed slowly in the anxious waiting of the Marlin tree, and after an hour, the inner layer of the small box was finally refined. But the marlintree didn't see anything, no, there was to be exactly, but it wasn't an object, it was a hole.

Yes, a thumb-sized small black hole. As soon as the small hole appeared, it frantically devoured the power of yin and yang in the furnace cavity.

"What the hell?" Ma Linshu was puzzled, but he was not worried at all about the power of the small hole devouring yin and yang.

The power of yin and yang between heaven and earth is endless, and those two fish just transformed it, and they didn't worry about being devoured at all.

"Woohoo, woohoo......"

Suddenly, a scalp-tinging scream came from the small black hole, which made Ma Linshu break out in a cold sweat all over his body. At this time, the small hole suddenly stopped absorbing the power of yin and yang, and its form changed instantly, turning into a small black square stone that fell to the bottom of the furnace.