It's just that in the end, it's Ningshi's barrier that is better.

No matter how close the fog is to the barrier, it will disappear as a puff of white smoke.

According to Ning Shi, she can only hold on for an hour, and if she needs to move, she can only hold out for half an hour, so Su Yu must take everyone to find a place without pollution within half an hour.

Thinking of this, Su Yu took out a bottle of dark blue potion in his backpack without hesitation.

Ning Shi was stunned for a moment when he saw this potion, because as we all know, most potions are darker in color, higher in concentration, higher in value, and better in medicinal efficacy.

And Ning Shi had gotten a lot of potions of this color from Su Yu before, which were actually potions for restoring magic, but the previous ones were slightly lighter, but the medicinal effects of those potions were already very good.

Now that this potion is close to black blue, Ning Shi doesn't need to use his own magic to check to guess how powerful this potion will be.

"If you have this, how long can you hold on." The bottle of Vivien in Su Yu's hand that was made not long ago was called 'Continuation Potion', and the effect was just like its name, 'Continuous' means continuous.

This is not a potion that instantly restores mana, but a potion that increases the speed of mana regeneration, and because the potion is very strong, it lasts for a long time and recovers quickly.

Corresponding to its medicinal effects, the materials consumed by this bottle of potion are also huge.

But 'there is a give-and-take', since you want to help the mermaid clan, it naturally can't be just a dozen of them, this is unrealistic, and some things that need to be spent can't be saved.

"I'll take a look......" Ning Shi took the potion and tried the effect with his own magic element, and then his eyes lit up, but he quickly sighed again: "This bottle of potion is very powerful, but because it is too powerful, with my current strength, I can only withstand half of the effect of the medicine at most...... If you combine that with the potions you gave me earlier, it will last for about two hours. ”

After Ning Shi finished speaking, he paused, and added: "It can be moved for two hours, and it can be stationary for five hours." ”

Su Yu calculated the time, and seemed to think that it was enough, so he divided the bottle of potion into two, half of which was given to Ning Shi and the other half to Youai.

As for Vivian, she only had a lot more potions on her, and Su Yu didn't need to worry about this.

After distributing the potion, Su Yu raised his head and said to the others: "Everyone can see how the situation is, there is not much time, you count the items on your body, find Duoya to make up for the missing items, and we will set off in five minutes." ”

Su Yu handed over some of the props on her body to Doya and asked her to distribute them, while she and Ning Shi began to discuss the inexplicable pollution.

"Can you find the source of the pollution?" Because he didn't know what had happened to lead to the current situation, Su Yu could only temporarily solve the current crisis in the same way as he used to deal with pollution, and this method was to find the source of pollution and solve the source of pollution.

Ning Shi nodded: "Yes, but I can feel that the source of this pollution seems to be scattered...... Like a stone just now, it shattered and scattered everywhere, and the difficulty of cleaning up decreased, but the time increased. ”

Su Yu is not worried about time, the space below here is so large, two hours is actually a lot, not to mention that they can't be in a state of movement the whole time, so the duration of this barrier should be more than three hours.

Unless this pollutant source 'shatters' countless pieces of his own corpse and scattered them everywhere, then they basically don't have the problem of lack of time.

"Then let's start cleaning up from the nearest one, and if you have any needs, just say it, and everyone will cooperate with you."

"Not for the time being, I'll take you to find the source of the pollution first." Ning Shi thought about it and felt that he didn't need anything for the time being, so he directly raised his staff and pointed out a ball of light, and after a few seconds, the ball of light exploded, and the crystal powder produced by the shattering fell all over the ground.

They are windless and automatic, forming a line of glowing light in the gray-black world beyond the barrier.

With such an obvious expression, it is needless to say that everyone knows that if you follow this line, you should be able to find the first source of pollution...... Splinter.

After all the supplies were replenished, Ning Shi controlled the barrier to slowly follow everyone's movements, following the line of light element condensation, the surrounding fog was much heavier, and they could already faintly hear the eerie movement of 'squirming' around them.

"Watch your surroundings, there may be dark creatures attacking." Su Yu also heard these movements, but now the space here has some meaning in the direction of the Black Domain, so their field of vision is very small, and they can't see the existence of other creatures outside at all.

But although it can't be seen, the sound can be heard.

In addition to the squirming movement, there is also a sound of sticky things moving and dragging, which is obviously not a good sound, Su Yu glanced at Gong Yu, and Gong Yu immediately took out the harp, covering up these sounds that would confuse people's minds, and also added some buffs for everyone.

As the melodious sound of the piano sounded, everyone breathed a sigh of relief, the stiff body gradually eased, and the speed of movement increased a lot compared to before.

Soon, they came to the end of the light, and not far in the air, there was a black unidentified object levitating, and from its body, a steady stream of black gas flowed outside.

This is one of the source fragments of the pollution.

【Pollution Source Debris III】

HP: 10000/10000

Attack: 0

Defense: 0

Introduction: Dark matter from the abyss can emit a steady stream of pollution, although it is only fragments, but the pollution effect is not reduced, and the fragments will escape with residual power after being destroyed.

……

"Don't do it, everyone!" Su Yu looked at the last sentence of the introduction and stopped everyone from preparing to attack.

Ten thousand health is actually not much, although there are only a dozen of them, and even a few are non-combatants, but they are all elite, ten thousand health and still nothing to defend against, everyone works together, they don't even need five seconds to destroy it.

However, the last sentence of this source fragment clearly has a deeper meaning.

What do you mean by 'fleeing with the remnants of your strength after being destroyed'?

How to escape?

Where to flee?

None of this is known.

But Su Yu can feel it, and this is definitely not a good thing.

"Ning Shi, have you ever encountered pollution source fragments before?" Su Yu had never encountered this situation before, she had seen many pollution sources, and even seen pollution sources that would 'multiply', but she had never seen broken pollution sources.