A sound knowledge of the way to the savage tribe saved Aoki and the others a lot of time.

The river in the savage dream is not the same as the stream outside the cave, but on the other side of the lake. Soundly took them over two hills, during which they finally saw the big lake on the island up close.

The distant mountains are as beautiful, the lake is like a mirror, and the contours of the mountains are reflected in the lake, quiet and beautiful. I have to say that this kind of scenery is really fascinating, but when I think of all kinds of things happening on the island, no one is in the mood to appreciate the scenery.

The coal boss didn't dare to fly too high, for fear of crashing into the sea again.

Aoki asked him, "Did you fall into this lake last night?"

The crow hovered low on the lake and said, "It's quack, it's quack! But the strange thing is that I could hear the sound of the tide yesterday, but today it is quiet like a mirror!"

Su Huilan said: "If you can hear the tide, it means that this place is still under the influence of the moon's gravity, but we couldn't see the slightest starry sky last night."

The crow stood on the green wood, paws gently scratching Aoki's hair: "Yes, yes, it was so dark last night, but it scared the baby!"

Hearing his words soundly, the leader in front of him turned his head back and wailed and shook his tail triumphantly.

The crow croaked dissatisfiedly: "What do you croak! Don't you just walk at night, look at your yellow feces!" He flew to the ground and walked side by side with the cat, "What... Gua...For safety's sake, don't run around tonight, let's sleep together, I will protect you, Gua..."

The cat meowed and rubbed his head against the crow's feathers.

Su Huilan said: "Aoki, your bird is really shameless!"

Aoki was speechless, but the crow suddenly turned around and said: "Hey hey, don't just speak ill of me behind your back because I disagree with you two! I tell you, the relationship between good brothers is not yours. A little girl can destroy it! So, I suggest you give up the fluke of a third party to intervene. With conditions like yours, where can you find a good man? If you treat me better, I can introduce you a few... For example, Captain Shi of the Criminal Police Team is not bad, quack..."

Su Huilan was so angry that he couldn't laugh or cry: "When did I say to be a third party?!"

The crow said: "You can hide from people by your careful thinking, but can you hide from birds?"

Su Huilan became more and more angry, and argued: "Even if I have such an idea, I am not a third party! It's just fair competition!"

The crow said: "Quak, what do you compete with?"

"I..." Su Huilan thought for a long time, yeah, what is the competition? The beautiful appearance, the profound knowledge, the inexhaustible wealth, he has all these, but does he care? And this is not so different. The only unique one is probably the achievement in spiritual power, but...

When she thought of this, she suddenly realized that she seemed to have fallen into a thinking trap. Why would I think about this? When did I have such an idea?

She saw the crow's small turning eyes gleaming with a sly light, and said angrily: "Aoki, what kind of bird do you raise! You are now perfect!"

On the side, Aoki put his hands in his trouser pockets, and walked with a light and breezy expression, as if the topic they were talking about had nothing to do with him.

Su Huilan had to wonder if she had a special quilt routine? Was this person and bird premeditated? Isn’t that what they do in Liuying Alley?

The crow soared to the green wood, and said, "Beauty, you and I are destined, I will show you a clear road..."

The more Su Huilan listened to this tone, the more she looked like she had encountered a fortune-telling liar.

"Joining is a craft. Competition requires courage. When have you learned how to make sauced elbows, or can make something better than sauced elbows, you can pass my level, quack quack..."

As the crows roared all the way, they saw the river leading to the savage tribe.

This is a deep stream between two mountains, the terrain is lower than the lake. The lake water overflowed from a small opening in the mountains, flew down several tens of meters, and flowed to the bottom of the stream to form a deep pool, and the pool water flowed forward along the mountain stream to form a river.

The width of the river is about ten meters, which is much larger than the creek where they came.

"Quah..." The crow tilted his head. "Why do I think it's a bit weird here?"

Su Huilan's angry crow just teased her and turned his head to ignore him.

The crow saw her expression and cried, "Hey, woman, don't be so stingy, okay! How can you chase my brother after being so stingy?"

Aoki patted the crow on top of his head and said to Su Huilan, "This bird has learned something bad at the bar, so ignore him."

Su Huilan shook her head helplessly and smiled: "Don't worry, I won't care about a bird!"

She pointed to the river and said: "The direction of the river is the same as what the savage dreams saw, but it does not conform to scientific principles. Rivers generally originate from mountains and are formed by the convergence of streams. The area of ​​this island is not large enough to form such a large river. And the river flows out from the central lake, indicating that the terrain outside is lower than here. There are only two possibilities. One is that the water level of the lake is higher than the sea level, and the lake water flows into the sea, and the other is the end of the river. There is also a bigger lake."

"But no matter which possibility, there is the biggest question. Where does the fresh water in the river come from?" Su Huilan bent down by the river, dipped her finger in the water and put it in her mouth. The mineral abundance is relatively high, but it is definitely not the taste of sea water, and the high water temperature may be caused by volcanic activity."

Aoki asked: "Didn't you say that this is a Klein bottle? The bottle is round, why is there such a saying that the terrain is high and low? And since the sea outside the island and the lake in the center of the island are connected, why is the lake water? Isn't it sea water?"

Su Huilan said: "The earth is round, and the water flows on the surface of the earth, but there are also differences in topography. The Klein bottle is the same. It is an independent space with a special structure and a gravitational field, not a vertical one on the earth. Bottle. As for sea water and lake water..."

She thought for a while and said, "Do you know the dividing line between the Atlantic Ocean and the Pacific Ocean?"

Aoki said: "I know that where they meet, you can see a clear boundary. The water level of the Pacific Ocean will be slightly higher than that of the Atlantic Ocean, and the color will be lighter."

Su Huilan said: "Yes, because the composition and mineral concentration of seawater are different, coupled with the influence of climate and ocean currents, the fusion of the two seawaters is very slow. Therefore, although the two oceans are connected, they are naturally separated and will not be mixed together. ~lightnovelpub.net~ The lake and the sea here are also the same. Although it is not clear where they are connected, there must be a boundary. The biggest problem is that the sea is too big. To maintain this boundary, it is necessary A large enough lake and enough fresh water."

Aoki nodded and said, "Just look along the river and you will know. Didn't you say that you saw the strange scene of the waterfall flowing backwards in the dream of a savage?"

He turned back soundly and meowed a few times, indicating that she had also seen such a spectacle.

They walked all the way along the river. The river was narrow and wide, and it was thirty to fifty meters long at its widest point. After coming out of the narrow mountain stream, the terrain gradually became open, and it felt like walking in the Amazon jungle.

As they walked along the river, the water was flowing forward, and the river was rugged and difficult to navigate, they never felt that there was anything wrong, until the crow suddenly shouted, "Hey, look back!"

Aoki and Su Huilan turned their heads at the same time, and saw the river behind them, like a white belt, winding through the mountains. Because of the obstacle of the mountain, they could no longer see the lake, but one thing was very obvious-the terrain when they came was much lower than where they are now.

This river actually flows upstream with a very slight slope!