After the team slowly advanced for several kilometers, a wide trench appeared in front of everyone, and some foamy dirty water flowed in this trench, which seemed to be nothing, but Lang Feng just threw a stone into it, and the liquid in the groove actually burned.

If it was an ordinary flame, it would be nothing at all, but the moment the flame ignited, all the energy within two meters around the trench disappeared, turning into an energy vacuum.

Such a scene was really terrifying, it seemed to be just ordinary energy absorption and deflagration, but Lang Feng felt keenly that even if his star soul power dared to approach that flame at this time, it would be devoured without impeccable.

That kind of flame, Lang Feng had never encountered before, and for the first time he felt extremely dangerous, they were still more than ten meters away from there, but he had already felt the heat wave scorching, and he was protected by the tall black death guard by his side.

Looking at the water rumor and Sha Lei, the two of them had already begun to sweat, so Lang Feng had no choice but to gather the troops to retreat, and prepare to discuss before making other decisions.

However, for those flames, the Black Death Guards all said that they could not do anything, and Hei Ke told Lang Feng that when he entered the Black Death Guard base before, every hole on the direct landing mouth represented a Black Death Guard, and the dozen or so blocked ones meant that they were dead.

It was filled with ashes from the burning of the Black Dead Guards, and all the dead Black Dead Guards had something to do with the kind of flames that they were killed by this kind of flames.

Seeing that Lang Feng didn't know what he was talking about, Hei Ke told him that the Heiya clan had made a special kind of energy light, and the material of that energy light was extracted from that groove. However, they didn't take it here arbitrarily, but spent a lot of money to exchange it for the different ** in the mountains!

As soon as Hei Ke said this, Lang Feng suddenly understood, it turned out that the Heiya clan had also made a deal with foreign beasts, so the foreign beasts in it should be a little different from other foreign beasts, at least their wisdom was very high, otherwise they would not be able to do it in exchange for this kind of means.

This information also made Lang Feng understand another key issue, that is, the things in this trench are the nemesis of the Black Death Guard, and since they are nemesis, they can't be used to impact.

Just when Lang Feng decided to fly over from mid-air, he saw a flame not far away rush into the air, igniting a bird-shaped beast that tried to fly over there, and the bird exploded into ashes with a sad cry, which made Lang Feng tremble for a while, and immediately put away the idea of crossing through the air.

However, after knowing from Heike that the Heiya tribe had made deals with those guys, they should know some detailed information, so they immediately called out the elder of the Heiya tribe and asked him for information about the defense ditch.

I don't know, I was startled when I asked, it turned out that what was flowing in the ditch was not dirty water, nor was it any combustible, it was the soul oil that Lang Feng only heard of in his name!

Soul oil, based on the star soul, assisted by blood, is a rare substance that can only be produced after special condensation, but this thing is the nemesis of many things, and it can be said that there are few things that are not restrained by it, especially when it burns.

Although there was only a layer less than ten centimeters deep flowing in that ditch, it would take a few star souls to make up that kind of thing for such a long ditch.

However, Lang Feng was wrong about this, because those soul oils were not pure, and many other things were added by those alien beasts, and the leader of the alien beasts living there had a talent, that is, he could refine soul oil.

As soon as Elder Heiya said this, Lang Feng suddenly became interested, and he had the urge to capture this alien beast leader alive, but the problem still had to be solved.

At this time, Xinghe's somewhat contemptuous voice sounded, and he told Lang Feng that the phoenix bird was the ancestor of playing with fire, and all the flames in this world were playthings in its hands, but he didn't expect him to be trapped by fire.

Xinghe's reminder made Lang Feng immediately stretch his frowns, and released the Yanhuang Furnace, I have to say that although his Yanhuang Furnace already has a machine spirit, but it is missing a fire beast that fans the fire, if he can subdue the guy who can refine the soul oil, then the power of this Yanhuang Furnace will be on a higher level, and it will even have the function of a primary automatic refiner.

As soon as the Yanhuang furnace appeared in the outside world, the phoenix bird immediately flapped its wings and flew towards the trench, only to see those flames immediately rise into the air and roll towards it, but the phoenix bird chirped happily a few times, and then swallowed all those flames into its belly like a long whale absorbing water.

Its wings suddenly became more gorgeous, and on the distant stone mountain, there was also a kind of short-handed and short-legged creature crawling on the ground, howling incessantly at the phoenix bird in the sky.

The flames were finally extinguished, and those soul oils were also refined by the flames that the phoenix bird spat out again, and finally turned into a dark green ball of light, which was recovered by it.

The substance in the trench was not catalyzed by soul oil, and the rekindled flames were not so powerful, Lang Feng immediately ordered the whole army to attack, and the first goal was to capture the alien beast alive.

After there was no natural threat, the Black Death Guard immediately gained the upper hand in the battle under the leadership of Black Carving, and although the level of those alien beasts was not low, they seemed to be completely unorganized, fighting on their own, and their strength advantage was not used at all.

This contrast made Lang Feng a little surprised, logically speaking, there is a head beast in this group, so such a highly intelligent beast will definitely attack or defend according to the requirements of the head beast, but he didn't see the organization in it at all.

"Let's go, let's go down too, solve the battle as soon as possible, and in addition, send Quacky out, find out all the mineral deposits here as much as possible, and after clearing these strange beasts, we will open the mine!"

Lang Feng flashed the big witch sword in his hand, and rushed into the Tiangong armor, originally he was at the rear of the team, but this rush almost rushed to the forefront of the battle, and at this time, the battlefield situation immediately changed, and those strange beasts rushed towards Lang Feng as if they suddenly had brains.

"What a trick to lure the enemy deeper! It seems that that guy's wisdom is really not low, but I don't know where he is?" Lang Feng suddenly understood that the previous battlefield state was all an illusion, and the head beast in the shadows obviously knew who was the leader here, and immediately prepared to carry out a decapitation operation at the moment when he triggered Lang Feng's attack with an unorganized attack.

Although the beast's brain was not weak, Lang Feng's team was obviously more efficient, and everyone immediately triggered the machine battle armor and turned into a three-meter-tall giant and rushed to Lang Feng's left and right, buying time for the Black Death Guard's reinforcements.

Lang Feng seemed to have given up on resisting completely, but the fact was that he was using all his star soul power to lock on to the beast hiding in the shadows.