The three-legged golden crow walked away, and it flew back slowly after more than twenty-four hours.

It was only then that the entire dungeon returned to light.

Fortunately, since the three-legged golden crow left, those Kou Taoyu people did not 'touch' the dark to sneak attack, which made Gao Fei feel at ease. After all, fighting in the dark is still somewhat inconvenient. Huge piles of boulders, all ready, just waiting to be thrown into the underground river.

It seems that after being taught a lesson, Kou Tao's fish people have no intention of coming back during this time, and they are all nested in the water after all. ”

As soon as you get closer, you will be hit by a storm.

The Dry Corpse Mammoth drove the white bone beast slowly towards the upper reaches of the river, and its heavy footsteps made ugly heads emerge one after another on the calm river. However, they just stared at the dead fish, and had no intention of taking the initiative.

Because the upper reaches of this underground river are very narrow, and the water is extremely fast. Even the Kou Tao fish people, who are quite familiar with the water 'sex', do not dare to approach casually, otherwise they will be killed? The frenzied water swept away.

As for the downstream, Gao Fei also inquired.

Behind the wall, there was a huge fault, and all the water that had flowed there had seeped into the layers of dirt. The water may form an underground river in another place, but it will never be here. Therefore, as long as the river is sealed, these Kou Tao fishmen will be like turtles in an urn, without resistance.

Of course, it's not so easy to block the river.

The impact of the river is not something that ordinary people can imagine. If you want to eat a fat man in one bite, it is impossible to directly block the water. It's like a water pipe, if you block one end, then the consequence is naturally that the pipe bursts.

In addition, if you throw a huge rock directly into it, it may be washed away by the current as soon as possible.

That's where the gravel comes in handy.

The rattan net pocket contained hundreds of boulders, and it had to be carried around by seven or eight dry corpse mammoths to be able to lift them, and it was quite difficult. They shouted hey-hey-hey, and with each step, their feet sank deep into the wet dirt.

Step on it, pull it out again.

The bank of the river was trampled into a thin mud.

"Ha ......"

The corpse mammoths roared in unison, smashing a net of gravel into the water, and the water 'flowers' splashed high.

The skeleton mages not far away clenched their staffs, they were always on guard against an attack that might arrive at the Kou Tao Fishmen. Luckily, though, the fish-men don't seem to be able to figure out why these undead would do what they do.

Gao Fei stared at the net.

The momentum of the water was even more fierce than he imagined, like a high-pressure water cannon under a fire hydrant, and the net pocket was washed away in an instant, until it was five or six meters and the water was slightly relieved before it sank.

"Go on!"

Gao Fei shouted.

As long as the net is not washed away, this is easy to do.

Bags of gravel crackled down, the river narrowed, the water level became higher and higher, and the overflow began to reach the ankles.

"This underground river is much deeper than I thought!" Oxin sighed from the sidelines.

At least more than ten meters deep!

Perhaps it is this depth that makes this river gather so many Kou Tao fish people.

The upstream was gradually filled in, and the rubble was halfway buried and replaced with a whole boulder. These boulders, even the smallest of which were two or three meters high, could not be lifted by the corpse mammoths at all, and only two or three white-boned beasts could move slowly on the banks of the river with T-shaped bumpers.

By the time the last boulder was thrown into the tunnel, the entrance to the underground river had been completely blocked.

Gao Fei had been worried that the river would break through the rocks, but the scene of the outflow did not occur, and the accumulation of rocks did not allow even a drop of water to seep out.

Maybe there are other rivers, Gao Fei couldn't help but think.

After doing all this, the Scourge retreated. There's no need for them to stay here all the time...... As long as you hide in the distance with peace of mind, those Kou Tao fish people will send them to the 'door' by themselves.

Sure enough, the Kou Tao fish people have realized that something is wrong.

I don't usually notice it, but since the inlet was sealed, the water from the outlet is still flowing, although it is not too obvious, but I can gradually feel the level of the entire underground river slowly falling...... At first, these guys didn't pay much attention, but after half a day, the water level dropped by a meter......

This made all the Kou Tao fishmen panic.

In particular, the section of the river 'bed' from the inlet has been 'naked' and 'exposed'.

"They've finally found out!" Gao Fei, who was standing on the high ground, couldn't help but raise the corners of his mouth. "I've been worried that these guys will be indifferent even if they find out."

More and more Kou Tao fishmen found out about the situation.

Something was wrong.

So, they began to prepare to remove the stones that blocked the inlet. But how can it be so easy?

Yes, that's right.

The net pocket did contain some small gravel, and these Kou Tao fish people could also carry it. But you must know that these small gravels have been forced into the soil by the boulders, and in front of them are pieces of boulders weighing at least a thousand catties.

Some merfolk did not give up, and took the three-strand fork in their hands and smashed it fiercely towards the boulder, trying to smash the boulder. You know, these rocks are the hardest basalts, and in order to mine them, even the dried corpse mammoth used more than two thousand hoes and pickaxes.

'Bang bang bang ......'

A series of crashing sounds rang out like the clanging of blacksmiths.

"Master, should we make a move?" Oxin couldn't sit still. There are at least seven or eight hundred Kou Tao fishmen who are 'exposed' out of the water, and there are more and more.

"Don't rush, wait a little longer. Scold...... These Kou Tao Fishmen are 'quite 'smart' and actually know how to attack rocks with water arrows. Gao Feile rubbed his chin.

The three-strand fork of the Kou Tao Fishman did not create too many gaps in the boulder, and only left a white 'color' scratch.

The same goes for water arrows.

Even if it is magic, at most, it only leaves a small thumb-sized hole 'hole', and at this speed, if you want to break this huge rock, thousands of Kou Tao fishmen will attack at the same time, and I am afraid that it will only take two or three hours. But don't forget, there are thousands of huge rocks blocking the river.

Even if these fishmen spit out their saliva, there is no 'door'!

What's more, there is also the Scourge Legion on the side......

"Wait until they've broken three or four boulders...... Gao Fei laughed.

Both the player and the monster have physical and magical limitations.

Even if it is a dragon, it is impossible to release magic endlessly, and there will be a time when it will run out. So Gao Fei was waiting for this time, until all the Kou Tao fish people circled around these boulders...... At that time, it is the best time to attack yourself.

Sure enough, it was just as Gao Fei said.

Although a large number of Kou Tao fishmen emerged from the water, these guys were still quite cautious. A group of fishmen tried to move away from the boulder, while others stood guard against a possible surprise attack.

Rumble!

Rumble!

After a long time, with the perseverance of the Kou Tao fish, several huge rocks were finally broken.

And during this period of time, Gao Fei has been holding back. Gradually, the group of Kou Tao fish also gave up their vigilance and began to frantically attack the water inlet, preparing to smash all these boulders in one go. That's what all the Koutao fishmen are doing......

However, the consequences of this are also quite obvious.

Some of the fishmen couldn't even shoot a water arrow in the end......

"Alright, it's our turn!" Gao Fei raised the corners of his mouth and arranged the next battle plan. "Skeleton mage, don't attack first, the most important thing for you is to keep these Kou Tao fish people from returning to the underground river. Therefore, it is best to choose the 'Hungry Lands' and the 'Aging', 'Slow', and 'Slow' types of magic for large-scale control. ”

"When these Kou Tao fishmen can't retreat, the dry corpse mammoth will attack again."

"But this time, there is no need for cavalry to crush it, it's just a war spear projection."

"What we have to do now is to keep 'rioting' so that these Kou Tao fish people don't have time to recover their strength. In this case, do your best to kill them! ”

"Ready!"

Gao Fei shouted.

"Let's go!"

The skeleton mages chanted in unison.

Inexplicable magical elements began to spread in the dungeon. The Kou Taoyu people, who were attacking the boulder with all their might, looked in amazement at the place where the magic 'wave' came from, but they were greeted by magical war spears that covered the sky. The half-flying magic spear slashed across a parabola and fell from top to bottom.

The targets are all the Kou Tao fish who are 'exposed' in the air.

Seeing the attack, these Kou Tao fishmen subconsciously prepared to use magic to fight back, but they forgot that they had already used all their strength on those boulders just now, and now they couldn't even spray saliva from the water arrows.

I could only watch as the spear struck.

Rumble!

Rumble!

Rumble!

The huge explosion made the 'naked' and 'exposed' river 'bed' tremble for a while, blood burst out along with the soil, and countless Kou Tao fishmen who could not avoid it were bombarded into pieces under this 'wave' attack.

In the face of a sudden attack, they had no choice but to flee.

But as soon as they raised their feet, they found that the thick and inseparable 'yin' shadows suddenly came to their feet at some point, and countless black shadows restrained them in place, unable to run quickly. And there is a continuous stream of negative magic that makes it impossible for them to avoid it.

Death began to creep in the dungeon