The insects seemed to be torn apart by some invisible force. Black, white, yellow and green slurries scattered everywhere and turned into a disgusting rain curtain in the air, falling down and splashing all over Brown.

Before he had time to look back to confirm, he saw the swarm of insects pouring out of the forest explode one after another. Their poor intelligence made it impossible for them to understand what was happening. In an instant, the slurry of the insects watered the fields where golden ears of wheat were swaying, turning the crops into pure black.

This wave of Zerg's offensive was actually stalled because of this.

Brown turned around hurriedly and saw Xia, who was wearing heavy armor and a cloak, raising her right hand. She snapped her fingers, and the insect further behind was shattered into pieces as if it was crushed by a huge hand.

The storm suddenly went away, and the sunlight penetrated the clouds and shone on the earth. The remaining insects seemed to be afraid of Xia, or afraid of the sunlight, and they all went into the forest and were no longer able to make any movement.

It can't even be called a battle, it's just a one-sided crushing.

At this moment, the old eggplant, which had just crawled out of the mud, ran into the bugs head-on.

"Fuck, you're still guarding corpses?"

He cursed, and since he had no weapons at hand, Old Eggplant could only prepare to fight the bugs with his bare hands.

But those bugs didn't even look at Old Eggplant and the others, and went straight into the deeper forest.

"ah?"

Old Eggplant was alert for a moment, and finally found that the group of insects did not come back, so he quickly returned to the town.

At first, he thought that all the people in the town had been killed, and the bugs would leave.

But when he saw Brown and the townspeople were intact, Old Eggplant was stunned.

Of course, the crops in the fields he planted were still ruined, which made Old Eggplant feel heartbroken and his hatred for those monsters increased a little more.

Later he discovered that the crops in the field did not wither after being contaminated by the monster's juice, but grew better instead.

However, those plump ears of wheat looked like insect eggs, wriggling slightly, which was disgusting and quite scary.

"These have been polluted. If we want to eliminate the pollution, we need strong purification methods."

Xia observed the wheat ears and said.

"Oh my god, that spell you just used must be at least level seven, and you can actually use it without any chanting or preparation rituals. Is this the form of the wizard of the future?"

While Jost was amazed at Xia's magic, he looked at the polluted farmlands with some worry. Even though these fields were originally reclaimed from the Black Forest, it was a pity that they were polluted again.

"This is one of the reasons why the Black Forest has spread. The corpses of monsters will pollute the land, causing corruption and chaos. Even if we can defeat those monsters, after the war, some land will still fall. The rivers and water sources that originate from the forest will soon become turbid, and the water will also carry madness."

Those wheat ears that absorbed the pollution grew fast in the wind and quickly began to spread to the surrounding areas. Even though the swarm of insects had passed through and left, the mess they left behind was still not something that mortals could clean up.

"...In my time, there were some special methods that could purify these pollutants, which were also important means of resisting the invasion of demonic tides."

Shia was silent for a moment, then replied.

"That is a method called the Spirit Torch. It creates a pure flame by burning the wizard's soul. Under the light of the torch, the monsters have nowhere to hide. As long as the fire is not extinguished, the monster tide will have difficulty advancing."

"Burning the mage's soul?"

When Jost heard this, he showed a surprised expression at first, but soon, he seemed to understand something and nodded secretly.

"Who created this magic?"

"I don't know. As long as I know, the Spirit Torch has existed in the Demon Network. Every wizard who has signed an agreement with the Demon Network will obtain relevant knowledge about the Spirit Torch. Therefore, in critical moments, every wizard can ignite himself and drive away the monsters."

Shia shook her head.

Magic is the wizard's reprocessing of knowledge. Xia has no idea what the person who created this magic went through or how he made this decision.

Perhaps, only in the most desperate situation can someone come up with such a spark of thought.

This was also the case in Xia's era. The mages did not have the condescending attitude like the current royal family and nobles, but truly came from the people and went to the people. They walked on the barren land, guarded against the threats from the Black Forest, and were ready to sacrifice at any time.

The mage is not some noble and inviolable profession, but just a candle that must be lit in order for the civilization of this world to survive.

"Can you teach me this magic?"

Jost said seriously.

"this……"

Xia was a little hesitant.

Because it was difficult for her to say whether the torch appeared in the contract of the magic network because she told Jost the knowledge of the torch. If this was true, then it would be another closed loop of fate.

But she soon felt relieved.

The Spirit Torch was one of the keys to the Kingdom of Night's fight against the demonic tide for thousands of years. Even if this kind of magic was not developed by Jost, it must have been developed by other wizards. The fact that he could stand here meant that the appearance of the Spirit Torch was inevitable.

The person who developed this magic is both the greatest hero and the greatest sinner of the Kingdom of Night.

He saved the world and made countless mages dedicate themselves to it.

In this case, it would be better to tell Jost directly. Perhaps there could be some improvements so that the mage would no longer be a consumable for lighting the torch.

Xia made a decision. She raised her left hand and a pale flame ignited on the gauntlet.

The light from the burning fire illuminated the corroded farmland, causing the contaminated crops to wither one after another. The earth looked like it had been plowed by something, and it looked in a mess.

The flames died down, and Xia turned to look at Jost.

"I just burned my soul a little bit to create the flame of the torch. But if it burns for too long, the flame will completely devour the soul and can no longer be controlled or extinguished. In fact, there are only a few mages who can control the flame of the torch."

A quill and a roll of parchment materialized next to her right hand, and she quickly wrote down the spell details related to the torch. This spell was not given temporarily through the magic network, but was infused into the wizard's soul from the moment the contract was established, so Xia wrote it out easily.

This magic is actually very simple. It only requires one ignition and the rest is to let it spread.

Jost took the parchment and his expression became more solemn as he read.

At this time, Lu Ban, who had been protecting the baron just now, walked over. He looked at Xia, and then looked at the parchment in Jost's hand.

"The flame of the spirit torch is very similar to something I know that purifies pollution."

Lu Ban said.

"That thing is called Pure Fire."