Moving along the dark cave wall, Su Mai carefully calculated the distance he would travel.

After about 300 steps, I suddenly noticed that the road under my feet seemed to start to extend downward, and the stone walls on both sides gradually became cold, and I could faintly feel a trace of wetness.

But despite this, the stone slab under his feet was still solid, and it seemed that there would be no danger for the time being.

It's just that in the midst of this darkness, the fear of the unknown still makes Su Mai feel a little uneasy, and he is more cautious when walking, for fear that he will alarm something hidden if he is not careful.

Just like that, I stopped and touched the stone wall and went down.

Less than five hundred steps, Su Mai felt that there seemed to be a faint light in front of him, looming, although it was not very clear, but for Su Mai, who had been in the dark for a long time, it was an unexpected surprise.

I couldn't help but quicken my pace, and rushed towards that little light, and rushed over with a trot.

The faint light seemed to be very close, but when Su Mai looked for it, he found that it was actually far away.

It's just that this section of the cave wall is relatively straight, and Su Mai suddenly saw the light, and he was happy for a while, but he didn't pay attention to it, but when he got closer, he was dumbfounded for a while.

It turned out that the place where he was was already at the end of the tunnel, and beyond that was an underground river.

The light I saw just now was emitted by some unknown stone on the river beach on the opposite bank.

By the faint light, Su Mai took a look, the dark river is about five zhang wide, the river does not know the depth, if you rush into the water, you don't know what danger there will be in the water, but at this moment there is no way back, if you don't go into the water, you can only wait for death.

Looking at the slowly flowing river in front of him, Su Mai suddenly felt a cold air rushing towards his face, and faintly felt that there should be something abnormal in the water, but he couldn't detect it for a while.

After sitting like this for a long time, Su Mai suddenly patted his head, as if he remembered something.

I saw him stand up suddenly, first crossed his hands, then parted, pointed his right hand to the sky, made a strange gesture, and recited the mantra lightly in his mouth.

In a moment, a fist-sized fireball appeared in the palm of his hand, illuminating a range of about a kilometer around him.

Su Mai held the fireball and looked down, and his heart suddenly cooled.

I saw that the river in front of me was black, obviously flowing slowly, but it was like a pool of stagnant water, lifeless, as if it could swallow everything at any time.

Su Mai groped for a small pebble on the ground under his feet and threw it into the water, but found that it did not ripple like a river on the ground, but sank gently, without any sound, as if thrown into a pile of cotton flowers.

Just as he was about to try again, the fireball in his hand suddenly went out, Su Mai shook his head helplessly, and then sat down by the river.

This fire separation technique is very easy for Su Mai today, but it takes a lot of energy.

Due to the lack of aura protection, Su Mai finished performing it once, but he could not perform the spell again in a short period of time, otherwise, the essence would not continue, and if he was not careful, he would get angry and cause harm.

In the past, when I was in the ancestral hall, I made many mistakes, and I didn't dare to do it easily.

After about half an hour like this, Su Mai felt that his energy had returned to normal, so he tore a sleeve of his shirt, and then cast a fireball, wrapped it in the sleeve, and the fire was bright in an instant.

Su Mai flicked the trick and controlled the fireball to fly towards the middle of the river, and found that the place where he was a cave with cliffs on both sides.

On the other side of the river, it was dark, and there was nothing to be seen except for the few glowing stones.

Due to the limited energy and the inability to fly far, Su Mai caused the fireball to shine on the side of the cliff.

By the light of the fire, I found that there was no grass on this cliff, but there were countless holes of the same size as in front of me, and I don't know if it was a natural formation, or someone deliberately carved it, it was dark and dull, and it was not visible.

Just as he was wondering, suddenly, in a black hole where the fireball flashed, there was a low roar, like a tiger's roar but even lowerer.

Su Mai was startled, but then saw a huge head sticking out of the hole, roaring at the fireball, shaking almost the entire stone wall trembling, as if this was very annoyed by the sudden disturbance of the firelight, and the liquid kept flowing down in his mouth.

Su Mai hid below and watched quietly, and found that this head was shaped like an earth dragon, but it was much bigger than it.

At a cursory glance, the head that sticks out of the light is more than a foot wide, and I don't know how big the body will be.

And as the light of the fire flickered, the monster seemed even more annoyed, and screamed again and again.

Seeing that the firelight did not respond much, he opened his mouth sharply and spit out his red tongue, trying to roll the fireball into his mouth, but fortunately, the fireball was tangible and incorporeal, and it shattered with one blow, and gathered again in a moment.

When the monster saw that the blow was ineffective, he was furious, and he opened his mouth and tried to pounce on the fireball.

Seeing this, Su Mai hurriedly drove the fireball backwards, just over the Heishui River.

Then he heard a roar, and the monster came out of the hole, and saw a black shadow pressing like a mountain, and a huge mouth was bitten.

Su Mai was in a hurry, so he flew back with the fireball, and when the beast saw this, its body trembled violently, and it stretched out a pair of huge wings, and with a deviation of its head, it pounced on Su Mai.

Su Mai was shocked, he didn't care about the fireball, he hurriedly turned around and ran towards the corridor behind him, and he didn't care about the darkness in front of him, he rushed all the way, and after a while, he reached the place where the corridor was sloping down.

After a pause, he suddenly found that there was no movement behind him, and the monster did not seem to be chasing after him.

Su Mai calmed down, turned his head cautiously, and found that the corridor behind him was quiet, and the faint blue light was still shining on the other side of the Heishui River, indicating that the monster had not entered the cave and was not in danger for the time being.

Seeing this scene, Su Mai felt a little relieved, hurriedly turned around, and quietly walked forward along the stone wall.

Walking to the entrance of the cave, leaning against the stone wall, and listening with bated breath, but not finding any sound, the monster seemed to be back in the cave.

Su Mai was still in doubt, and sat quietly at the entrance of the cave for a long time, but there was still no movement outside.

Sensing that the monster was really gone, he gently poked his head out and leaned down at the entrance of the cave to look out.

The surroundings were still as quiet as ever, and the glow of the riverbank was hazy, and although there was a blur of light and shadow, nothing could be seen clearly, and the monster had long since disappeared.

After about half a pillar of incense, Su Mai felt that it seemed safe outside, so he climbed up.

When I walked to the water's edge, I felt a chill blowing in my face.

If it's just cold, the weird thing is that there seems to be a strange suction force on the surface of the water, like an invisible big hand, insisting on pulling people underwater, Su Mai was so frightened that his scalp was numb, and he hurriedly retreated backwards, until the mouth of the cave, still frightened.

After sitting quietly for a while, he came back to his senses, and said in his heart that this black water dark river is really dangerous and abnormal, if you rush to go down, I am afraid that the bones are gone, but at this moment there is a black river in front of you, and there is a dead end in the back, it is indeed a dilemma, plus the toss just now, my stomach is faintly hungry, and if I continue to consume it like this, I am afraid that I will not become the monster's dinner, and I will be hungry and faint first.

When people are helpless, the more they don't want things to happen, the more likely they are to happen.

Just when Su Mai was distressed and helpless, the hazy light in front of him suddenly dimmed, and a huge shadow enveloped him.

Su Mai looked up, and was suddenly shocked, daring that the monster had not returned to the cave, and he didn't know where to wait for him.

Seeing Su step out, he flew over again, stretching out his huge head, staring wide-eyed, looking down in the air, his expression seemed to be like a greedy cat seeing a mouse, arrogant and proud.

For such a behemoth, a weak human like Su Mai was really vulnerable, and it seemed that as long as it had a long tongue, it would be enough to devour him.

Therefore, he was not in a hurry to attack, so he condescended to the ground, shocking the desperate creature under his feet.

Suddenly frightened by this monster, Su Mai completely lost his mind, and even forgot to turn around and run away, so he raised his head and stared at the monster motionless.

It took a long time for Su Mai to come back to his senses and find that the monster didn't seem to have any intention of attacking him immediately, but it showed no signs of going away.

Staring at him like this, motionless, Su Mai didn't dare to act rashly, for fear of accidentally angering it, and the consequences would be unimaginable.

In this way, a man and a beast silently confronted each other in this dim and cold underground cave.

Su Mai stood firmly at the water's edge, the great danger that made him forget about hunger for a while.

After this confrontation, his mind cleared up a lot, and he began to ponder the strange behavior of this monster.

Judging from the expression just now, this monster was eyeing the tiger, obviously with bad intentions, but it seemed to have some scruples and did not dare to attack rashly.

Just as he was in doubt, a strange voice came out of nowhere.

"Goo...... Goo"

It was like the sound of water bubbles.

Su Mai hurriedly looked down and saw that in the stagnant black water dark river, near the riverbank, several huge blisters had inexplicably appeared.

The blister was not the usual burst of spit out, but very slowly protruding from the bottom of the water, as if there was another unknown creature hidden underneath the water.

The monster in the air also found something abnormal at this moment, and after seeing the blister, he turned his head and let out an angry roar at the river, with a little anger and a little unwillingness.

After a while, there was no movement on the surface of the water, and silence returned to it, and the monster turned its head and looked at Su Mai again.

But this time, Su Mai was not as scared as he was just now.

Judging from the monster's expression just now, the reason why it did not launch an attack for a long time seemed to be very jealous of this black water river and did not dare to get too close to the water.

And the strange blister just now appeared, and it is very likely that there is another creature hiding under this water that is quite a threat to it, so it is also watching and waiting.

After a while, Su Mai suddenly saw the huge claws under the monster's body, remembering that it seemed to be particularly sensitive to fire, and suddenly had a plan, which was thrilling, but it was also the only feasible strategy at present.

Having made up his mind, Su Mai turned around slightly, and suddenly rushed towards the entrance of the cave with an arrow step.

The monster roared and swooped down, but then turned back and did not follow.

Su Mai felt a little relieved, thinking that the most important thing at the moment was to find a way to get the monster closer to the water, and the only thing available was the firelight.

Thinking of this, Su Mai had an idea, sat down against the stone wall, and quietly breathed in order to recover his strength.

After about half an hour, he felt a slight recovery, and then he stood up, and with the same gesture and technique, a fist-sized fireball appeared in his hand again.

I saw that he lowered his body, crawled forward, and when he was about to reach the water, he drove the fireball to jump up and down in a flash, causing the monster to scream again and again, and his body kept moving downward, opening his teeth and cracking his mouth, as if he wanted to devour the fireball in one gulp.

After a stalemate of about a quarter of an hour, the monster never dared to get too close to the water, but it was clearly furious and roaring.

Seeing that the time had come, Su Mai pointed at the magic trick in his hand, and the fireball flickered, and flew forward quickly.

At the same time, Su Mai was busy using the art of wind escape, and his figure flashed and disappeared.