Liu Zhengyang is very clear in his heart, even if new materials are developed, it is not realistic to arm the whole people.

The characteristics to be carried by new materials are destined to be a scarce resource for the research and development of new materials.

Therefore, Liu Zhengyang can only find another way.

The first is to use the city defense system for defense. Although this will consume a lot of resources, even including spirit stones, in the face of life, such consumption is completely worth it.

According to his expectations, this city defense system is a huge turtle shell, directly covering the entire city, in order to resist the attack of the black soul.

But it is not Liu Zhengyang's character to always be beaten passively.

This is the second point that comes to his mind.

After the new material is developed, it is destined to give priority to the use of the strong, especially the strong of the Taoist level. If there are sufficient protection prerequisites, it can play a great role!

While fully ensuring their safety, the impact on the Dark Souls would be devastating.

Of course, it is only Liu Zhengyang's idea at the moment.

But the R&D process has to go hand in hand.

Even Liu Zhengyang prefers the former.

After the emergence of the city defense system, there will be further space for the research and development institute to study new materials.

There are still powerhouses in the Daoyuan realm here, and they will not stand idly by. At that time, they can also form a certain impact on the black soul, and can be slightly resisted.

Coupled with the backing of the city defense system, the Daoyuan realm powerhouses are tired and can come back to rest!

Why was the Daoyuan realm powerhouse sealed by the black soul?

Not because there is no chance for any grooming, fighting almost all the time until finally exhausted.

Had to be sealed by the black soul.

If there is a chance to repair, it is not only for them that their physical fatigue can be repaired, but it also means that their minds will not be as depressed as before!

"Especially the city defense system, it must be caught as soon as possible! Even the simplest version is acceptable!"

Hearing Liu Zhengyang say this, Tang Yuting knew where the focus of her next work was.

At the moment, he said resolutely: "Understood, Brother Yang, I'll find someone to practice!"

Tang Yuting left in a hurry.

But Liu Zhengyang's brows were locked together.

The visit of Venerable Changjian made Liu Zhengyang a little astonished.

"Is something wrong over there in Kyoto?"

Liu Zhengyang hurriedly asked after seeing him.

Venerable Changjian shook his head, and then hesitantly said: "Everything is safe in Kyoto, but everyone is a little worried about Hall Master Liu!"

Liu Zhengyang thought about it for a while, but he didn't hide it.

Just a solemn exhortation: "The next thing I want to say must not be spread out, otherwise it will cause further panic! But the Protectorate Temple or the powerhouse of the Taoist level, you can know!"

After Liu Zhengyang finished speaking, he told the story of Black Soul.

Venerable Changjian couldn't help but change his expression.

"What? There is such a thing!"

After speaking, Venerable Changjian felt that his spirit was greatly impacted, and he couldn't help but take a deep look at Liu Zhengyang: "Dianzhu Liu, this matter is no trivial matter. I want the elders in the temple to come over in person to be safer!"

Liu Zhengyang thought for a moment and nodded.

The matter of the Black Soul cannot be disclosed for the time being, which may cause a large area of ​​panic, but the Dao Zun strong will be the main force in the fight against the Black Soul. They know in advance that the research on new materials will also greatly promote significance.