The mountains are green, the boulders are sharpened, and the whole canyon is as wide at the top and narrow as if it was cut by a huge giant, extending for several miles all the way.

Li Yu and Xue An walked among the towering cliffs like axes, and the rushing river water was like a yellow dragon roaring filial piety, with a huge roar constantly rushing downstream between the cliffs next to them.

The Qianlong Yuan they were going to to was located deep in the mountains, an underground river located in the lower reaches of the Bohu Lake, the largest lake in Daqian.

The gateway to the abyss is the extremely dangerous Longjiang Axe Gorge.

Walking in such a place, but seeing the dangerous peaks on both sides of the river, the cliff knife crackling and axe, can not help but make people sigh like seeing a ghostly axe.

The mountains and rivers here are magnificent, steep and abnormal, and the rolling Longjiang River is like coming from the sky, which makes people feel like seeing the Nine Heavens Waterfall.

However, when the two of them climbed over many peaks and walked all the way for five or six miles, it was like climbing a high platform, but when they saw that the terrain in front of them was open, and the long river was hanging like a heavenly river, they suddenly became calm.

This is the water from the Bohai Lake mixed with the water of the upstream Longjiang River.

Ascending high and looking into the distance, the rivers and lakes are distinct, forming a whirlpool-like migration between a mountain cliff in front.

The terrain here is peculiar, and it has been eroded over the years, forming a hollow erosion land similar to a funnel.

The imperial court once explored it and found that there was a hidden mystery inside, which was actually a large lava cave and underground river hidden deep underground.

Among them, there is a large hollow cave that can be directly accessed from the land of migration, and there is a small area of underground water, which is the so-called Qianlong Yuan.

Li Yu stood in the distance, staring at the migratory land in the center of the river from afar, with a thoughtful look on his face.

"Since ancient times, the Longjiang River is dangerous, in this area there are often people who capsize or fall into the water, and the corpses go down the river, often accumulate in the place where the migratory flow is, and over time, they are involved in the underground dark river, so the hidden dragon abyss under this also has another nickname, called the Netherworld Cave.

In the local legend, there is no return when you enter it, in fact, because the underground dark river is intricate, and the waterway is often difficult for boats to pass, and once you go deep, it is easy to get lost in it.

People who enter the exploration inside are often either flooded by the periodic river tide and drowned alive, or they are trapped in the dark river like an underground labyrinth and cannot get out.

In particular, there used to be a big demon in it, the Longjiang crocodile with the evil dragon and the dragon......"

That's right, the so-called evil dragon is actually a Longjiang crocodile living near the Longjiang River.

Its essence is that it is a wild animal that has been contaminated with treacherous power and transformed into a demon like the Black Mountain Lord.

The Great Qian's Dynasty had a vast territory, a vast land and abundant resources, and there were many living beings living on the vast land, and not only human beings could be affected by treacherous forces, but also some crocodiles, tigers, and other animals would fall into the devil under some occasional circumstances, bringing great disasters.

Especially in the treacherous recovery a few decades ago, everyone did not have a deep enough understanding of this, and they did not expect that a profound disaster would be born here.

It's just that this is an extremely accidental phenomenon.

Since that disaster, the local government has been closely monitoring the ecology of the surrounding area for many years, and has never noticed anything like this happening.

However, according to Li Yu's understanding, there are still many crocodiles and other wild animals in the vicinity, which have strange mutations due to the influence of treacherous forces.

If they want to go inside and explore, these wild animals can't get around the interference.

But at this moment, Li Yu can't take care of so much for the time being.

After beckoning Xue An to go inside, he crossed the river and went straight to the depths of the cave where the migratory whirlpool was.

The funnel-shaped entrance was very dangerous, and it was not a place where ordinary people could enter and exit, but Li Yu and Xue An had already left the realm of ordinary people, they just groaned in the distance for a while, and immediately took out a sheepskin raft that had been prepared in advance from the treacherous domain, threw it into the water, and went up the river with a flying rope through the hook and claw, and quickly swam over.

When he was about to arrive at the mouth of the funnel, Li Yu suddenly got up out of thin air, grabbed Xue An with one hand, and threw him out.

In the blink of an eye, his own body also stood in the air like a fairy god.

In the midst of the suspense of ordinary people who wanted to bow down in surprise when they saw it, thinking that it was a miracle, the two of them arrived safely inside with little effort, and then slowly landed for more than ten years and came to the mouth of the funnel in the river.

A damp and dark cave appeared in front of him, in addition to the waterfall-like hanging river flowing from the mouth of the funnel, there were many dark rivers and culverts of different sizes around it.

The largest of them are several feet square, and the small ones are the size of a human head, and from the ground, the rock wall roars through, like the hollow of the whole stone mountain, eroded by the river water to create dense holes.

There used to be a good hand of the imperial court who explored that this was a huge stone mountain, shaped like a skeleton, and now the mouth of the funnel that Li Yu, Xue An and others entered was where the mouth was.

"Go this way."

After identifying the direction a little, Li Yu and Xue An began to walk in the direction due west as shown on the map.

It is the upper reaches of the entire underground river, from which you wind all the way down to a large underground lake that connects to the underground river.

The large body of water, which seemed to be in the skull, covering a radius of dozens of miles, was the main body of the entire Hidden Dragon Abyss.

After a while, the mountain road in front of the two of them became pitch black.

The rocks here are wet and slippery, covered with aquatic moss, and the average explorer can come in and stumble if he is not careful.

Most of the rocks below are some rugged strange rocks, the terrain is uneven, and it is not good to fall into pieces.

However, it was at this time that Li Yu and Xue An respectively took out the shiny stones.

The fluorite, which emits a cold light like a luminous orb, is a strange derivation.

And Li Yu has a certain night vision ability by virtue of the mutation of the peep eye, and just by relying on this not bright light, he can see the surroundings transparently.

Their steps were light, as if they were completely unaffected by the terrain below, and in some precipitous places that seemed to be no way out, Li Yu directly hoisted himself out of thin air with his gloves, floating and moving like a ghost.

With this otherworldly ability to move, they soon came to the location of the open Lake District.

Identifying it by the faint light coming from somewhere in the southeast, Li Yu finally confirmed that this was the site of the mysterious domain that had been excavated for the imperial army.

At this moment, Li Yu suddenly felt the Heavenly Star Stone hanging around his neck move, followed by it, and began to squirm like a spirit.

"Zhong Ke is nearby?"