"Lao You, be careful!"

You Ke was immersed in his thoughts, attracted by the strange hexagonal building, and unconsciously stepped on the beach by the lake, and the waves were surging and soaking through the upper of his shoes.

"Look at the water, it looks like there's something!"

You Ke only cared about observing the strange situation on the island, and did not pay attention to the nearby lake for a while. As soon as Ma San'er arrived at the shore, he ran to wash his face, hands and feet, eager to jump in and swim, and at the same time saw that the lake was so clear that he wanted to add some water to the military kettle. But he suddenly found a black shadow passing under the water nearby, and he was frightened and took a few steps back, so he hurriedly reminded You Ke loudly.

Under Ma San'er's call, You Ke immediately came back to his senses.

He looked down and looked closely at the water, which was clear and green, no different from ordinary water. There are a lot of aquatic plants in the shallow water, and small fish and shrimp swim freely, and the ecological environment is obviously excellent.

He picked a relatively heavy dead branch from the beach, wrapped a stone around the branch with a vine he had plucked, threw it into the lake, and then observed the speed and direction of the dead branch's sinking.

By observing the condition of the water bodies here, you can have a little eyebrows. He found that the current was consistent with the actual Mediterranean situation.

By combing through the knowledge in your mind, the currents of the Mediterranean Sea are seasonal, and there is a narrow waterway between the Mediterranean Sea and the Atlantic Ocean, which is known as the Strait of Gibraltar. Ships traveling between the Mediterranean and the Atlantic Ocean pass through this strait. Strangely enough, despite the different winds in winter and summer, the surface waters of the Strait of Gibraltar flow from west to east, so ships sail from the Atlantic Ocean to the Mediterranean, and when they pass through the Strait of Gibraltar, they always sail smoothly.

The reason for this peculiar situation is that there is a directional current within the strait. However, this current direction is not caused by the direction of the wind, but by the difference in the density of the water in the Atlantic Ocean on the left side of the strait and the Mediterranean Sea on the right side of the strait.

Due to the special geographical location of the Mediterranean, the salt content of the sea here is high and the density is high. The average annual temperature in the Mediterranean Sea is relatively high, and it is under the control of the subtropical high in summer and autumn, so the sunshine is strong, dry and hot and rainless. In winter and spring, warm westerly winds from the Atlantic Ocean blow over the sea, and the temperature is above freezing at temperature. In addition, around the Mediterranean, with the exception of the Nile in Egypt, there are no major rivers with a large flow of fresh water into the Mediterranean. As a result, the salinity of the Mediterranean Sea is steadily high, with an average annual salinity of 38% in the surface sea, and as high as 39.58% in the eastern sea, which is 3-4% higher than the global average salinity.

Because the average annual temperature of the Atlantic Ocean is lower than that of the Mediterranean, and the evaporation of seawater is small, the annual average salinity of the Atlantic Ocean is also lower than that of the Mediterranean, only 35%. Even the adjacent Atlantic seas, which are at the same latitude as the Mediterranean, have a slightly higher salinity of only 36%, thus creating an imbalance between the average annual salinity of the Mediterranean and the Atlantic, which are communicated by the Strait of Gibraltar. The density of seawater depends on the temperature and salinity of the seawater, and more importantly on the salinity. The greater the salinity, the higher the density, so the Mediterranean sea is denser than the Atlantic one.

The pressure on the surface of the sea in the Mediterranean Sea and the Atlantic Ocean is the same, one atmosphere. Since the pressure of the sea is directly proportional to the density of the sea, the water pressure in the Mediterranean is greater than that in the Atlantic Ocean at the same depth, and the deeper the depth, the greater the pressure difference between the two. With the difference in pressure, the sea water moves. The greater the pressure difference, the more intense the exercise. In this way, the sea water at the bottom of the Mediterranean Sea enters the bottom of the Atlantic Ocean through the Strait of Gibraltar, thus lifting the water of the Atlantic. At the surface of the Atlantic Ocean, the sea level is raised, and the sea water flows through the Strait of Gibraltar to the Mediterranean Sea due to the action of pressure.

Because this flow is continuous, there is an interesting phenomenon in the Strait of Gibraltar in which ships enter the Mediterranean from the Atlantic Ocean and submarines enter the Atlantic Ocean from the bottom of the Mediterranean.

The dead branches are relatively heavy, sinking slowly, and after entering the water, they first drift to their right hand for some distance, and when they are close to the bottom, they suddenly move quickly in the direction of their left hand before touching the bottom, indicating that the direction of the lower water flow is opposite to the surface layer. This is exactly the same as the flow of water in the Mediterranean and Atlantic Oceans.

And it was this surface water that rushed into the hexagonal building in bursts of waves, causing a "knock, knock" sound. It can be seen that the lake has moved up and down a lot from the original water level over the years, revealing a rectangular hole, and because of the rain that has just fallen in recent days, the rainwater has filled part of it, and the lake has spread up a little, causing the impact at the entrance to make a "knock, knock" sound.

However, the explanation of the current phenomenon of the Strait of Gibraltar in the Mediterranean, which seemed plausible in the past, is absolutely inexplicable in this lake. The first is that there is no external "Atlantic" connection, and the second is that there is no difference in salt density and pressure relative to the two bodies of water.

"The land and water of the entire lake constitute an effective ecology, and there is obviously a whole system that maintains this independent ecological cycle" Thinking of this, You Ke was secretly surprised.

"If the entire actual area of the Mediterranean Sea is also artificially operated according to this microcosm model, then..." You Ke couldn't help but gasp, not daring to speculate further.

Returning to Ma San'er's side, You Ke roughly said his opinion, Ma San'er habitually pouted and said:

"Oh my God, how could it be! This is more fantasy than fantasy novels, if there is such a thing, I will simply not do the project, just dig a little ancient cultural relics and we will also send it! ”

"Seriously, I thought about it for a while, if I sell those few ginkgo trees, at least one of them will be worth this amount."

Ma San'er opened his fingers and made an "OK" shape, which means 3 million yuan.

Although You Ke has long known about his own small hair, the difference between the two of them looking at the same thing is actually the end of the world, thinking that even the difference within the group of human beings is still very large, and he can't help but be tactful.

"But such a big tree will definitely not belong to us, there is a country, it's a pity, it's a pity! But the dragonfly can still find a way to catch a few of them."

Ma San'er still can't forget.

"Oh, you're conscious, I thought you were full of money" You laughed,

"I think if this is an ancient ecological park, it will definitely be able to attract a lot of tourists, but the infrastructure construction must be in place first, so you don't have to worry about not making money."

You Ke followed Ma San'er's train of thought and continued.

"Wonderful, Lao You, I think if you are in business, you must be a genius, tsk" Ma San'er scratched his head, thinking to himself why he didn't have this pattern.