From Li Daozong's narration, Bai Yuqi roughly knew the characteristics of the "evil fog".

It is very similar to the fog of negative energy that he learned from the knowledge system of the arcane civilization.

In other words, the so-called "evil fog" is actually a negative energy fog, and the only difference is that after combining with the main material plane of Datang space-time, it produces characteristics unique to Datang space-time.

Compared with positive energy, which tends to be "strengthened, amplified, and materialized", the characteristics of negative energy tend to be more "mutated, weakened, and spiritual".

These descriptive characters may seem simple, but in fact they present a much more complex effect than you might think.

For example, it can affect the spirit of living beings, merge planetary consciousness, and cause living beings to mutate...... Wait a minute.

The mere fact that it can influence the spirit of a creature is enough to create countless "bad guys" in this world, because it amplifies the negative emotions of the creature.

And being able to fuse planetary consciousness is even more of a headache.

As mentioned above, "planetary consciousness" is the collective consciousness of the "conscious individuals" that life on this planet has.

When the negative energy is combined with the "planetary consciousness", it can make some of the fragments and individuals in it manifest, that is to say, it can make the fantasy existence in the cluster consciousness become a reality!

If you have to give examples, some fantasy demons and monsters, ghosts and ghosts.

It will gradually become a reality with the strong negative emotions of "fear" generated by people's fantasies.

And as the fantasy becomes a reality, it will strengthen people's fear of these fantasies more and more, and further strengthen the power of these fantasies.

To put it simply, the stronger the emotions people have about these fantasies, whether they are positive or negative, the stronger these fantasies will be!

Negative energy itself is not evil, it is just an energy substance.

Fantasy existence is created by "faith" or "faith", and negative energy only gives it nourishment and powerful energy for growth.

Since the negative energy appeared in Datang time and space, this change has been irreversible, but Bai Yuqi is still helpless with this change, he can only watch it happen, which is what makes him the most depressed.

The only thing he can do now is to quickly find a way to seal the negative energy half-plane that exists on the Upper Goguryeo Peninsula to avoid the further expansion of the harm caused by negative energy.

Although the situation was very bad, Bai Yuqi could not show it in front of the Tang generals.

can only put on a look of "everything is under control", indicating understanding and nodding to Li Daozong and Li Tao.

Secretly, I can only hope that this negative energy half-plane that opened on the Goguryeo Peninsula at some point has not caused any serious changes.

His personal strength, with the help of the knowledge system of the arcane civilization given by the Eternal Endless System, has been raised to a realm that surpasses the level of time and space in the Tang Dynasty.

But after all, he is only one person, if he is just a super strong individual like a brain beast, it is not difficult for him to deal with it, but once he encounters such a large-scale change in the dimensional environment, he is a little powerless.

He can only find a way to enhance the strength of the biological races in the Tang Dynasty to help himself, such as the disciples of the Wuji Sect, the dragon riders of the Tang Dynasty, and the mountain guards composed of the humanized animal races of Zhongnan Mountain, etc.

Judging from the current situation, the situation is not too serious, at least what they encountered is just a normal creature that has been eroded by negative energy, and there is no irresistible "fantasy creature" of manpower, so there is still time and room for redemption.

Now that he has arrived in Xuansu City, the crisis of the 100,000 Tang troops trapped in the fog area is even if it is resolved, although some people have been sacrificed, the loss is still within the acceptable range.

The city built by Bai Yuqi casually was enough to protect the safety of the 100,000 Tang troops.

At the same time, the negative energy creatures he killed before should be the vast majority of the creatures in the vicinity that have been corrupted by negative energy.

Unlike the Tang Army, which lacked lethal attack methods, the negative energy creatures that died under the bombardment of his Arcane missiles had completely turned to ashes, and it was impossible for them to be resurrected to continue attacking Xuansu City.

Therefore, Bai Yuqi didn't plan to stay here for long, and decided to take his disciples to continue to move forward and go deep into the Goguryeo Peninsula to find the existence of that negative energy half-plane channel.

When Li Daozong and Li Tao heard this, they hurriedly got up and hugged their fists to fight.

The Tang Dynasty's plan to conquer Goguryeo died abruptly due to the mist of this evil fog.

However, in order to prevent the further expansion of the evil fog and threaten the Tang Dynasty itself, it was naturally impossible for them, as the generals of the Tang Dynasty, to stand idly by.

Bai Yuqi did not refuse.

The previous situation has shown that the individual strength of these Tang soldiers is low.

However, the "positive energy field" formed by the accumulation of a large number of positive energy organisms can effectively resist the invasion of negative energy fog.

The main thing is that he can't always go it alone, he has to find a way to train helpers.

Therefore, after a little consideration, Bai Yuqi decided to let Li Daozong lead 30,000 mercenaries to continue to defend Xuansu City, and build it into a transit base for attacking the Goguryeo Peninsula, waiting for the arrival of follow-up reinforcements.

At the same time, the 25,000 soldiers under the two of them were gathered and handed over to Li Tao to lead, and as the vanguard army, he went with him to Hengshan City, which was not far from Xuansu City.

If the speculation is correct, the situation of the cities on the Goguryeo Peninsula should be similar to that of Xuansu City.

Although it is not known when the negative energy half-plane was opened on the peninsula.

However, the people of Goguryeo scattered across the peninsula will inevitably flee to these larger cities in fear when the fog of negative energy begins to take effect.

Therefore, theoretically, a large number of positive energy creatures will make these cities relatively safe, and it may be possible to persevere in this disaster.

In addition to the arrangement of soldiers and mercenaries.

The remaining 45,000 logistics personnel, Bai Yuqi did not let them idle.

In addition to the disciples of the [Medical Holy Gate] who had mastered the holy arts, they were transferred out and led by Shi Xuanzang to form a team of priests to follow him.

The remaining [Tiangongmen] disciples and a large number of laborers will build a road between Xuansu City and Hengshan City under the protection of the army of soldiers led by Li Tao, creating transportation convenience for the follow-up support troops.

Don't think that the disciples of the [Medical Holy Gate] have no combat power, the positive energy holy art they originally used to save the dead and help the wounded is a fatal injury to the negative energy creatures, maybe the combat power is stronger than the Wuji Knights composed of the disciples of the [Wuji Gate]!