The black beads are not large, no more than two inches in diameter, and can be easily grasped by the palm of your hand. But Wu Feng was very cautious, did not have direct contact with the black bead, and in the water-sheltered space, he released his soul thoughts every three zhang to explore the black bead.

However, the black beads have a plain appearance, no clues can be detected, there is no treasure light, and there is no fluctuation of spiritual objects......

"No! According to previous investigations, the location of this black bead is the center of the flow of black water, and it should be a supplementary source of black water. Wu Feng thought to himself, countless thoughts flashed through him, and his heart was full of doubts.

When he probed the water shelter space, the changes in the black water were even more surprised, and he said secretly: "The flow of the black water has slowed down, and it continues to slow down, and it is about to stand still...... If nothing else, this black bead is the source of black water supplements. ”

"It's just that this bead doesn't look like a treasure at all, how can it replenish black water, in this water-sheltered space, there is no water flowing out at all. ”

"Could it be the suppression of the water-avoiding beads?" Wu Feng guessed, and then stepped back a little, allowing the black beads to appear outside the water-sheltering space.

Suddenly, the black water accelerated, Wu Feng was shocked, and took a few quick steps forward, enveloping the black beads into the water-sheltering space, while the black water outside tended to calm down again.

"The mystery of this black water lake, the water level has been stable for tens of thousands of years, the key is this one, the plain black bead? How is this possible?" Wu Feng had a ridiculous guess in his heart, it was himself, it was hard to believe.

But he controlled his state of mind, calmed himself down, and knew that this speculation was very true.

After all, his water-sheltering space, whether shrouded in black beads, caused by changes in black water. This is a clear indication of the problem.

After verifying it twice, Wu Feng was completely sure that the black beads could make the black water flow and replenish the black water in the black water lake when they came into contact with the black water. The black beads break away from the black water and enter the water-sheltered space. It's just a bland bead.

Wu Feng tried to penetrate the soul thoughts into the black beads, and he was not hindered in the slightest, but the inside of the black beads, like the situation on the surface, was still plain.

Nothing was detected, Wu Feng even dripped blood, but there was no connection to recognize the master, and the dripping blood had no effect. I can't check at all that there is anything special about this black bead.

After tossing for a moment, Wu Feng could only give up helplessly, and said secretly: "Although I can't check the clues, I can at least be sure that the water level of Heishui Lake is related to this black bead." The bottom of the lake is not a safe place. Take the beads with you first, and then check them slowly when it is safe to do so. ”

Come to think of it. Wu Feng no longer hesitated, put the black beads separately, put them into a storage ring, and then received the three-yuan beads.

After putting away the black beads, Wu Feng quickly ran back to the lake, still the same as when he came. Avoid the water by avoiding the droplets, and run on the bottom of the lake with your feet.

This time back to the lake, Wu Feng was running at full speed, less than three hours, when his soul thoughts were released. It was found to be less than three miles from the shore.

At this time, Wu Feng naturally had to slow down, slowly move towards the shore of the lake, always pay attention to the situation on the shore, and even put his soul thoughts to the extreme, to find out if anyone was paying attention to Heishui Lake.

Confirming that there was no one on the lake, and the distant shore of the lake was also unmanned, Wufeng landed quickly.

"Hey, the water of the lake is lowered by eight zhang, and the slope at the bottom of the lake is removed and lowered by five zhang in a straight line. As soon as he returned to the shore, Wu Feng noticed the Black Water Lake, and the water level of the lake had dropped significantly.

The point where Wu Feng returned to the shore of the lake was directly west of Heishui Lake, not within a hundred miles of the water release gap, which he deliberately avoided. Hundreds of miles away from the gap, not only the water level has changed, but it has also decreased by several zhang, which is basically the reduction of the entire water surface.

This undoubtedly proves that the black beads are the key to keeping the water level stable in the Black Water Lake for tens of thousands of years.

More than three hours have passed since the sheltered space covered with black beads.

In more than three hours, the water in the lake has dropped significantly, indicating that there is no doubt about the change in the water level.

Of course, such a situation is a better confirmation for Wu Feng. But for the rest of the people, it is full of mysteries.

Although at this time, the three old monsters of the Dangang Realm worked together to kill the skull dragon. Most of the onlookers are basically near the Wild Wolf Valley, but it is not excluded that a small number of people are still by the Blackwater Lake.

Wu Feng couldn't be sure, in the past three hours, the changes in the water level of Heishui Lake have not yet been transmitted. Even if some people don't believe it at the beginning, as long as there are many people who spread it, it will inevitably attract attention.

It is likely that at this time, most people will rush back to Blackwater Lake to find out the specific situation.

What Wu Feng is facing now is a difficult choice, either leave quickly and insist on going all the way to the west, or go around behind the large army and wait and see the changes in Heishui Lake.

It is obviously not a wise thing to stay by the Blackwater Lake and wait for the rest of the explorers to come now.

Of the two options, leaving directly to the west may be safe and may be suspicious, and the changes in Blackwater Lake can only be known from rumors.

Among the people who choose to blend in, although there are some adventures, as long as they succeed in blending in, they will not arouse suspicion, and they can follow the large army and pay attention to the changes in Blackwater Lake.

After a little thought, Wu Feng turned to the south, obviously preparing, blending into the large army, and then returning to the Blackwater Lake. After all, in his heart, he was still very concerned about the changes in the Blackwater Lake, and wanted to know how much the Blackwater Lake would decrease when the Wild Wolf Valley was filled.

The situation was as Wu Feng expected, when he went all the way south, roughly to the Black Wolf Canal, halfway there, he noticed that in the distance, there were more than a dozen people in a group, all the way to the north, obviously heading to the Black Water Lake.

In this small team, there are three Zhou Tian Realms and nine Tiangang Realms, with a total of twelve people.

Wu Feng released his soul thoughts outside, but he didn't attract anyone's attention, not to mention that he was in the west, no one would waste his soul thoughts, and let them out to explore and play. These twelve people hurried along the Black Wolf Canal, but they always paid attention to the changes in the Black Wolf Canal.

Without attracting people's attention, Wu Feng quietly rushed to the west of these people, and then without hiding his breath, he quickly rushed out to the east, deliberately attracting the attention of these people.

"Huh?" Wu Feng suddenly appeared, and when he saw more than a dozen people, his face was full of surprise, and he asked, "Brother in front, where are you going?"

"Didn't you hear that the bone dragon appeared, and those three Dangang Realm seniors chased and killed the bone dragon all the way into the Wild Wolf Valley? Why did you go north and not go to the Wild Wolf Valley to watch the battle?" Wu Feng looked very curious and surprised.

Wu Feng's appearance, in line with his words, no one had the slightest suspicion, sensing that he was Zhou Tianjing, thinking of equality of status, one of them Zhou Tianjing, opened his mouth to explain: "The three Dangang Realm seniors have been in a stalemate with the bone dragon for several hours now. ”

"I've heard that there are some changes in Blackwater Lake, and we're going to go and explore. Brother, you came from the northwest, didn't you receive relevant news?"

"No, a certain family has no acquaintances here, but I still heard the rumors outside, and when I heard that the bone dragon appeared, I hurried over. Wu Feng replied casually, and then asked, "What is the change in the Black Water Lake? Let you ignore the bone dragon and run back to the Black Water Lake to investigate?"

The three Zhou Tian realms faced, the cultivation was all in the early Zhou Tian period, not much different from Wu Feng, when he opened his mouth to ask, Wu Feng did not pretend to be polite, and his words were more direct. He is now disguised as a big man, his image is more rugged, and his tone is very in line with his temperament, which will not arouse the suspicion of others.

"It's said to be a blackwater lake, and the water level is rapidly decreasing, but we haven't seen it with our own eyes, so we can't be sure if it's true or not. The one who had spoken before replied again.

"How is it possible? The water level of Heishui Lake has not changed for tens of thousands of years, this time the ditch was dug to release water, and after three or four days passed, the water level has been stable, how can it be quickly reduced?" Wu Feng's face was full of surprise, and he looked disbelieving.

At this moment, there was a rather mixed aura from the south, apparently there were some people rushing in groups. And such a situation shows that the people who got the news and are ready to explore the Blackwater Lake are coming quickly.

Zhou Tianjing, who answered Wu Feng, lost his patience to explain in the face of one question after another, and said directly: "Whether it is true or false, as long as you go to investigate, you can know, seeing is believing, there is no need to doubt." ”

After finishing speaking, this Zhou Tianjing beckoned his companions and accelerated to the north, hoping to reach Heishui Lake earlier. When he met Wu Feng Pingshui, he didn't even introduce each other, he was just a passerby, and he didn't go with him.

Wu Feng naturally won't leave, he needs someone to cover, and with these people, he naturally said: "That's right, seeing is believing, after a certain family goes to investigate, you will know the truth or falsehood." ”

"Alright, let's go together. We have to report the situation of our investigation this time to the seniors of the Mixed Yuan Realm, and please ask my brother to cooperate!" Zhou Tianjing, who was still from before, spoke again.

"Okay, let's hurry to Blackwater Lake and find out as much as we can!" replied Wu Feng still roughly, without thinking. In fact, he knew very well in his heart that Zhou Tianjing, who opened his mouth, couldn't fully believe him, and was worried that he had other intentions, so he secretly reminded him, even a warning.

After all, moving out of the Mixed Yuan Realm is not a simple reminder. And now this area is basically a mixture of fish and dragons, people from dozens of cities, gathered in the area of Heishui Lake, and it is not uncommon to kill people and seize treasures.

Although Wu Feng really has other intentions, his intention is to find a cover identity, and if he doesn't have the idea of grabbing the treasure, he will naturally not be weak-hearted.

Seeing Wu Feng's calm answer, Zhou Tianjing was a little relieved, but he still didn't mean to introduce it, and accelerated towards Heishui Lake.

An hour later, everyone rushed to Blackwater Lake, and suddenly saw the lowered water level.

"In two hours, the water level dropped three zhang again...... Wu Feng thought to himself, he left the previous time, and when he returned this time, back and forth, about two hours, compared with the decrease in the water level, he could roughly estimate the water level and the time range of the reduction.

At the same time, the people who rushed to investigate came out one after another, all confirming the rumors that the water level of the Heishui Lake had been lowered. Nearly half of the people who watched the battle in Wild Wolf Valley rushed back, which shows the huge impact of this water level change.

After all, something that has not changed for tens of thousands of years, a sudden and bizarre change, is by no means a trivial matter...... (To be continued......)