"What are you...... Want to cut through the ice? Looking at her movements, the others had obviously guessed what Su Yu was going to do.

Su Yu nodded, and made a few pickaxes on the spot.

"You guys stand on the shore and dig the ice, don't step on the ice." Ice chiseling is actually not dangerous, but Su Yu is afraid that this solid and steel-like ice surface will be directly shattered by a few chiseling blows.

The ice is very thick, and it is gray, and you can't see what is underneath at all, if this person accidentally falls, it is really uncertain whether he lives or dies.

A few people who were assigned to pickaxes obediently stood back on the shore, and the others also retreated, and even in order to prevent accidents, Su Yu also tied a rope around the waist of these ice chiselers, and at the other end of the rope were several stone statues built by Su Yu.

Everything was ready, a few people directly picked up the pickaxe and began to work, originally they were ready for the ice to be chiseled, but they didn't expect to be poured for a few minutes, everyone only heard the sound of 'bang', and a big hole appeared in the ice!

And just when everyone was concentrating on whether it was a lake or something else under the ice, a person suddenly fell to the ground, and suddenly, his whole brain was buzzed.

"Help! Something grabbed my foot and I'm going to fall in! With a cry for help, the others didn't care about looking at any holes, and hurriedly began to save people.

But fortunately, the person who was pulled was one of the people who chiseled the ice, and he had a rope on him, so the thing seemed to find that it couldn't drag him, and left in a huff.

"Something definitely caught me just now!" Because the thing was gone, the victim couldn't find anything to prove the truth of what he had just experienced.

But everyone also thought that no one would joke at such a time, so they didn't suspect him...... But since they believed it, they couldn't help but feel a little creepy in their hearts, and everyone took a few steps back.

"Let's not look at this hole yet, let's step back first." Although Su Yu also wanted to know what was going on under the ice, she could only see a black patch at a glance, and if she wanted to look closely, she could only get closer, but what had just happened was really dangerous, so she must let everyone come back first and then make a choice.

After returning to a safe place, the person who had been pulled by the foot earlier was also discovered.

"You see, there's a black stain on my shoe...... Wrong! Why are the soles of my shoes all black?! The person who spoke was also decisive, and after discovering the problem, he took off his shoes directly to everyone to see, and sure enough, the shoes that should have been light-colored became black.

Even if they get out and get their soles dirty, they can't be this pure black like soaked in ink.

The others couldn't see anything, but Ning Shi noticed at a glance that the sole of the shoe was stained with a rich dark element.

"Don't wear these shoes, things that are contaminated with dark elements are not good for your health." Ning Shi said this, and then looked at Su Yu beside him.

Su Yu also nodded, and then took a new pair to the man.

That person originally thought that he didn't want these shoes, but it was difficult to walk without shoes, but after all, life was important, but now there were new shoes, especially after hearing Ning Shi's words, he hurriedly lost the old shoes and replaced them with new ones.

And the old pair of shoes was also burned by Meck after reading it.

Ning Shi took advantage of this time to prepare to see what was going on under the ice......

Although he didn't know what exactly happened just now, and even the victim himself didn't notice what was catching him, Ning Shi could think that since there was a dark element in the sole of his shoe, there was a high probability that he was going to catch him just now.

So are there a lot of dark creatures hiding under the ice?

She approached the lake with this doubt, Su Yu felt a little dangerous when she saw this and wanted to stop it, but when she thought of Ning Shi's identity and her character, not only did she not speak in the end, but she herself also took two steps closer.

However, she didn't have the courage to stand directly on the shore when she was at peace, and Su Yu was at least two or three meters away from the big hole in the lake.

Looking down at this distance, she could only see a piece of black, but she could vaguely feel that this piece of darkness seemed to be ...... Wriggle?

Su Yu was taken aback by this idea, and then got goosebumps all over her body.

Ning Shi also found the information he wanted at this time, got up and turned around, just in time to see Su Yu's not very good-looking face.

"Lord Su, you didn't ......" Ning Shi just wanted to care, then saw the location that Su Yu's gaze was focused on, paused, and then took two steps closer: "Lord Su, did you also find out?" ”

Su Yu frowned: "Is the entire lake really a source of pollution?" ”

Ning Shi nodded silently.

Su Yu sighed on his face, in fact, he had scolded the people behind the scenes countless times in his heart.

This layer of ice is actually just a means of sheltering the source of pollution, and it can also be understood as a protective barrier like a turtle shell, which also explains why the 'ice' does not melt when exposed to fire, because it is really not ordinary 'ice'.

And under this barrier is the source of this replica - the source of forest pollution.

The dark things that Su Yu saw just now were actually just a part of the source of pollution, and this feeling was like seeing countless 'mountains' in the underwater labyrinth...... But that's just part of the black dragon's body.

With such a large source that it would take a 100-metre-diameter lake to cover it, it is impossible to imagine how such a large source of pollution would affect the area if it were directly exposed to the forest.

"Ning Shi is a light magician, you have the most say in dealing with this kind of thing, do you have any good suggestions?" Su Yu really doesn't have any good ideas now.

At first, she thought that dead trees were the source of pollution, but she never imagined that the real source of pollution would be so large.

Originally, there were two ways to deal with the pollution source, one was to directly find the light magician to purify, but such a large area of pollution source, let alone Ning Shi alone, even if there were ten more, he couldn't deal with it.

What's more, although the source of pollution is a 'dead thing', it will also resist.

The dark creatures bred around it were not much worse than the dark creatures bred by the formation, in other words, in the process of purification, there would definitely be dark creatures to stop them.

This doubles the already huge workload again!

In addition to creating pollution, the source of pollution also has the function of a monster spawner, which can continuously produce dark creatures.