The matter of the black robe, now Da Hei can't explain it to Xu Xuan, although there has been no news of the black robe for a long time, but Da Hei faintly feels that she is still somewhere in this world, one day, Da Hei will walk out of this small place, see all the mountains and seas in the world, and meet her. At that time, she must not be so weak, otherwise she would not be worthy of being her younger brother.

Da Hei's running steps became more brisk, he looked back at Xu Xuan, the young man was always full of enthusiasm for upward struggle, his eyes were very bright, and there was no haze in his heart. Before Xu Xuan first met Da Hei outside the water house, Da Hei had already quietly observed Xu Xuan, he was very ordinary, weak, and not even an instrument master, but he never gave up, and repeated his cultivation over and over again in the cave, so when he and Wan'er suddenly appeared outside the water house, Da Hei couldn't help but finally come out to meet him, and after close contact, Da Hei could feel the strength and strong belief under his thin body.

The black robe once said that a person with strong beliefs will not be an ordinary person.

Da Hei chose Xu Xuan with his intuition, he wanted to go far with this young man. Of course, Yunbai's appearance was an accident, and he wanted to disguise himself as an ordinary dog like this first, but it seemed that it was not bad to be picked out by the fox.

The fox is also pitiful, but the thieves and rats have always been despised by the big black.

The place he was going to now was a test for Xu Xuan, what he could gain there, Da Hei couldn't help but look forward to it.

Under the leadership of Da Hei, Xu Xuan returned to the vicinity of the Shuiju Cave he had found, but Da Hei did not enter the cave, but continued to move forward along the stone wall of vines covered with dense green leaves swaying in the wind. The stone wall was long, but the path under his feet became narrower and narrower, and gradually the grass under his feet began to thin and then withered yellow, and then only the grass roots remained, and finally the ground was full of nothing but small gravel. At the same time, the green leaves of the vines on the mountain wall gradually became scarce, and finally only a few thin thorny branches struggled to climb the stone wall. Da Hei still didn't stop, and after walking for about half an hour, Da Hei led Xu Xuan to an unknown lake and stopped.

Whether this is still in the Jade Finger Mountain, Xu Xuan can't judge anymore. The lake in front of you is jasper-colored, and you can see the swaying aquatic plants and the occasional small fish with their tails when you get close, this is a vibrant lake, but the strange thing is that there is constantly rising gas in the middle of the lake, and the water vapor spreads around, and from a distance, this lake seems to be the fairy lake depicted in the picture, looming.

"Hey, this lake is kind of interesting. Yun Bai also saw the gas constantly produced in the center of the lake, but he sensed that the gas would not harm Xu Xuan, since this was the case, it was the existence of something in the lake that formed this strange picture as far as the eye could see.

Da Hei jumped directly into the lake, and after a while, he swam a few feet away with an orderly stroke of his limbs, Xu Xuan took off his clothes with a smile, and swam after Da Hei with a slam.

The lake was very cool, but the closer Xu Xuan got to the center of the lake, he felt the temperature of the lake around the gas rise, Da Hei dived towards the lake at the position where he was almost in the center, Xu Xuan took a breath without thinking and followed Da Hei down.

The temperature around the center of the lake has risen sharply, and there are no more fish in sight, but several swarthy and unknown aquatic plants are still swaying along the water. At this time, Xu Xuan saw a stone-like protrusion similar to an earthen kiln at the bottom of the lake, and there was a deep black hole underneath it, from which hot gas came out, gushing out and driving countless tumbling blisters at the same time.

Da Hei swam towards the black hole that spewed hot gas, and soon disappeared, when Xu Xuan swam to the mouth of the black hole, he found that it could only accommodate two people, and the water bubbles spewed out from the mouth of the cave blocked Xu Xuan's line of sight to explore inward, but Xu Xuan still heard the swimming sound of Da Hei who had entered it, Xu Xuan was unable to breathe, and accelerated his speed into the cave.

But it was not as dark as Xu Xuan imagined, but there was a tiny light every few meters, Xu Xuan took a look, it was the night pearl that I don't know who put on the wall to guide the direction, this hole has been here before.

"Tsk, it seems that people here used to think about it, but I can't find out what lies ahead now. Yun Bai looked at the long stream of water that didn't know where it was going and said to Xu Xuan.

"The big black is not far ahead, and he won't lead me if there's any danger, but it's unusually hot here, so I have an idea. Xu Xuan was talking to Yun Bai in his head.

"What thoughts?" Yun Bai was curious.

"I once read a novel about the strangeness of Zhiwei, which mentioned that although water and fire are incompatible, when a certain limit is exceeded, the energy accumulated by fire or water is the same, so it can temporarily produce a special phenomenon of water and fire blending. If the water around the ordinary lake is regarded as the yin in Taoism, then the existence of the sun is yang, and yin and yang complement each other to endure. But this lake is different, except for the gas rising in the lake, I have checked when I swam just now, the creatures in this lake are larger than other places, and there are many fish species that have not appeared in front of people at all, which may be attributed to its own yin and yang, which is a rare yin and yang integrated lake, and its peripheral creatures are also more aura than other lakes, which is the vitality brought by the anomaly in the lake. If my guess is correct, the middle of the bottom of this lake is where the sun is, and it is also the secret of this lake. ”

"Yinyang Lake, if that's the case, then Da Hei has really found a good place. Yun Bai suddenly thought that if this was the case, then what Xu Xuan would have to face next...... Hehe, this is also the blessing of that kid, when he met Dahei, if this kid can grow up quickly, then he will not be long away from the day when he will be free from this soul, well, if he is too miserable for a while, then take care of him a little, Yunbai can't help but feel in a good mood.

At the same time as communicating with Yun Bai, the narrow waterway finally opened up, and the light could already be seen on the water surface above his head, Xu Xuan followed the guidance of the light and finally swam out of the water and was able to breathe.

Xu Xuan didn't know how to avoid water yet, and he was able to hold on for such a long time thanks to the cultivation of the long-term concentration stage, which made Xu Xuan's internal organs and various perceptions stronger than those of other early stage masters. Da Hei saw Xu Xuan swimming up and wagged his tail happily.

The droplets from the lake disappear in a few moments, and beads of sweat fill the surface of the skin. Xu Xuan looked around, there was a small platform in front of the place where he swam out, about one zhang long and wide, standing up and looking down, you could see a stone staircase extending down in a zigzag, the stone steps led to the place where it was constantly tumbling and seemed to be gushing out at any time, the surrounding rock walls had falling stones from time to time, the smaller ones could not withstand the high temperature and turned into ashes before they touched the magma, and the surface of the large stones rubbed against the air during the falling process and then burned, and from a distance it looked like a fireball smashed into the sea of fire at the bottom. Just standing on the high platform, you can feel wave after wave of heat rushing in, if it is an ordinary person, it would have been unbearable, but Xu Xuan was ecstatic at the moment.

This place was like a tailor-made cultivation place for him, and if he could control the falling stone fireballs, then how powerful it would be.

Xu Xuan thanked Dahei and couldn't wait to run down the stone steps. Da Hei didn't go down, he was only a first-order demon beast, the fur of his body couldn't withstand the scorching heat underneath, it was the limit to be able to come here, this was the place he had heard from the black robe before, and the night pearl inside was also put by the black robe, what Xu Xuan could gain, it depended on his ability.