"Senior Brother Yu, so you mean that these poisonous fish were all killed by this poison king toad?" Xinhai said excitedly.

"It's very possible, so now this poison king toad is not downstream, but in our upstream, we should go upstream to find it!" Cheng Yu said.

"That's right, this poisonous king toad must be hiding upstream!" When everyone heard Cheng Yu's analysis, they felt that it was really like that.

So, everyone turned around and looked for the upper reaches of the Heishui River again.

However, although everyone felt that their direction was not wrong, everyone looked for a long distance and found no trace of the poison king toad, which made everyone anxious.

"Senior Brother Yu, it doesn't seem right, judging from the situation of those dead fish, this poisonous king toad should not be very far away from us. And now there are no new dead fish found in this river, but this poisonous king toad has not been found, is this really strange?" Xinluo said very suspiciously.

"Something really wasn't right, I didn't find any new dead fish along the way, and judging from the freshness of the dead fish before, it would never have been more than a day before that fish died. There's no way the Poison King Toad knows we're back to catch it, so it can't move too fast.

Therefore, if you move at a normal speed for a day, it is probably within such a large range, even if it is farther away, Nana should be able to find traces!" Cheng Yu said with a frown.

In order to calculate the area where the poison king toad existed, I deliberately caught a dead fish and came up to see the situation.

"Cheng Yu, since it has not been found on this shore, do you think this poisonous king toad will hide in this black water river? Didn't you say that this black water river itself is a poisonous river? And the poisonous king toad is also poison for food, and since it can kill poisonous fish, it is entirely possible that it has been hiding in this black water river all along!" Yang Ruoxue said.

"Hiding in the Heishui River?maybe!If that's the case, we might have to take a good look inside the Heishui River in this area!" Cheng Yu's eyes lit up when he heard Yang Ruoxue's speculation.

If this poison king toad is hiding on the shore, then Yao Na is absolutely sure that she will find its hiding place. But now after looking for so long, I haven't found this guy's figure, and if there are any other places in this forest that he and Yao Na can't directly investigate on a large scale, it is only in this Heishui River.

Thinking about it this way, there is a high possibility that this poison king toad is hiding in this black water river.

Although they had to go back again, they would never miss any chance to find the Poison King Toad.

Exploring the Heishui River is different from other places, and Yao Na can see it clearly with the curved empty mirror in other places, without missing any place.

But she didn't have this way to deal with this Heishui River, so everything could only be investigated with her own divine sense, and in this way, the speed of their investigation slowed down significantly.

But they wouldn't give up, and in order not to miss a single place, each of them used their divine sense to carefully investigate the Blackwater River.

"Cheng Yu! There seems to be some breath of a poisonous king toad here!" Everyone searched in the river for almost a day, and Xinluo at the front suddenly screamed.

Everyone was overjoyed, and they all came to Xinluo's face, and then went to the Heishui River to investigate.

"Sure enough, it's the breath of the poison king toad, this guy must be down here. Cheng Yu found out the breath in the river, and he was immediately overjoyed, he was sure that this poisonous king toad was below.

"But this river is very deep, and it is highly poisonous, so we can't go down to the river like this to catch this guy. How are we going to force it up?" Xinhe said with some embarrassment.

"Isn't that easy, if we attack the river, this guy can't help but run out!" Kokomi said.

"I can only try it like this!" Cheng Yu nodded.

Without saying a word, Kokomi launched an attack directly into the water.

Boom Boom!

Several sword shadows rushed into the Blackwater River, making a sky-high splash and setting off huge waves in the river. However, this attack of the heart is too superficial to rush to the bottom of the river.

As a result, after several attacks were issued, everyone waited for a while and did not see the poison king toad run out.

"It seems that this trick will not work!" Xinluo shook his head and sighed.

"This guy must have known the movement on the shore, but it didn't run, this guy is really confident!" Xinhe once again used the Yuan Shen to investigate the bottom of the river, and found that the guy's breath was still there, which showed that this guy did not have the movement just now and ran away.

"Maybe it knows that we can't go down the river to force it out, so naturally it has nothing to fear!" Xinluo said.

"Senior Brother Yu, why don't you try again?" Maybe my attack is too weak to force it out!" Kokomi said.

"Well, I also have this intention, see if I can force it out!" Cheng Yu nodded.

As soon as Cheng Yu's voice fell, the whole person rose into the air and stood above the Heishui River. The long sword is held in his hand, emitting a dark green light!

Sou!

Cheng Yu slashed towards the Heishui River with a sword!

Rumble!

The Heishui River was split in half by Cheng Yu at once, but although the river on both sides was split, it was only to one-fifth of the depth of the river, and there was no way to split it again.

When Cheng Yu's long sword was retracted, the river surged back from both sides again, and the Heishui River slowly regained its calm, as if nothing had happened.

"No, there's no way to force it out like this!" Cheng Yu shook his head and said.

This black water river is too deep, and in addition, this black water river seems to be more magical than ordinary rivers, as if different wood has different hardness.

If it was an ordinary river, Cheng Yu's sword might even go down dozens of meters deep, but in this Heishui River, he only cut down a few meters deep.

"Cheng Yu, why don't you let me try it?" Lin Yuhan stood up and said.

"Well, if you're confident, try it!" Cheng Yu nodded, anyway, he didn't have a good way to force out the poison king toad at the bottom of the river for a while.

Moreover, Lin Yuhan held the Broken Sky Mirror, which was the magic weapon of the water system, and had a great advantage in controlling the water element. Maybe in front of her, this black water river really can't be difficult for her.

I saw Lin Yuhan come out and take out the aqua blue Broken Sky Mirror, which rotated in her hand, emitting a dazzling blue light.

If Cheng Yu wants to forcibly split this black water river, it may be quite a difficult thing. But for Lin Yuhan, it is not so difficult to get rid of this Heishui River.

At least with the help of the Shattered Sky Mirror, she definitely didn't have that much difficulty in wanting to do so.

Just like at this time, the Blackwater River is like an obedient child, and the water in the river naturally spreads to both sides.

At the same time, what caught everyone's eyes was a huge pitch-black toad lying quietly at the bottom of the river!