Standing on the top of the hill, overlooking the area of the ancient city of Liangzhu that was sandwiched in the "C" shape in front of him, Kong Jianwen was amazed.

"The rise of the ancient city of Liangzhu is not unrelated to the thriving water system!"

In fact, after 5,000 years of vicissitudes, most of the tributary water network that used to spread throughout the plains disappeared due to a great flood.

However, after the efforts of archaeologists day and night.

The traces of the ancient river ditch were cleaned up by the archaeologists and densely distributed in the inner city of the ancient city of Liangzhu.

Of course, the most obvious is the ruins of the city wall of the ancient city of Liangzhu.

Even after 5,000 years, the ruins of the Liangzhu city wall and the city gate have jointly constructed a closed diagram of an approximate circle, which is the most undeniable real trace of the ancient city of Liangzhu.

It is also the last vestige of the Liangzhu culture on the ground.

Take the mountain as the Guo and the water as the wall.

In order to enclose the royal city of nearly 3 million square meters, the Liangzhu people took advantage of the developed water system, transported a large number of stones from the foot of the mountain and the water ditch, mixed with cushion soil, and built a rectangular city wall with a length of about 1500-1700 meters from east to west and a length of about 1800-1900 meters from north to south.

In order to defend, among the four city walls, except for the south city wall, which has no moat, the other three city walls have internal and external moats, which is equivalent to building a city by sandwiching the river.

In addition, 8 water gates have been explored, and 2 of each of the four walls have been explored, which are connected to the inner and outer rivers. In addition, there is a land gate in the middle of the south city wall, which is where you should usually walk in and out of the city.

That is, this wide city wall is like a dividing line at that time, and inside the wall is the most central place of the entire ancient city, and outside the city is the outskirts of the ancient city.

A land gate separates the inner city from the outer suburbs.

"According to research, most of the rivers within the outer Guo are not natural waterways. The length of these artificial rivers has reached more than 30,000 meters. Chen Han said quite shockedly beside him.

Water is needed for food cultivation, and exchanges between developed handicrafts require the participation of waterways.

For this reason, in addition to their own river channels, the Liangzhu people also continue to dig river channels on the basis of the original water system.

Most of the dense waterway network in the inner city was actually dug by the Liangzhu people themselves along a tributary of a large river.

Combined, these waterways have a total of more than 30,000 meters in the inner city, which is equivalent to 30 kilometers of waterways.

And the size of the entire inner city is only 3 square kilometers!

It can be seen how dense the water web of the inner city is, like a spider's web.

Except for the Mojiao Mountain Plateau in the center of the inner city, which is not covered by any water network, and is a boxy earthwork, the rest of the inner city is connected by the water network.

It can be seen that at that time, Chen Han felt how incisive the idea that Liangzhu was the Venice of the East.

No, it should be said that Venice is the Liangzhu of the West!

When Liangzhu was booming, the city-state of Venice had not yet appeared!

Water, not only as a road, but also as a defense.

The earthen city wall of Liangzhu and the river are matched with each other to play a defensive role. Even, the city itself is a water city, and only one of the nine city gates is a land city gate.

But water brings abundance, opportunity, and prosperity, but it also sows the seeds of danger. The city, which thrives on water, is also plagued by floods.

At that time, the Tianmu Mountains were the absolute center of heavy rainfall. Whenever summer comes, the abundant rain is easy to flood into raging mountain floods, which directly impacts the ancient kingdom of Liangzhu in the lower plains.

In order to resist the intrusion of flash floods, the genius people of Liangzhu creatively built a water conservancy system consisting of 11 dams.

At this time, the place where Chen Han and Kong Jianwen were actually located was on the mountains on the northwest side of the ancient city of Liangzhu, at the end of the "C" valley.

The water conservancy system of Liangzhu consists of three parts: the high dam at the mouth of the valley, the long causeway in front of the mountain and the low dam in the plain.

Among them, there are six high dams at the mouth of the valley, which are distributed in the mountains on the northwest side of the ancient city of Liangzhu, and are divided into two groups, east and west, and each group blocks a valley mouth.

The plain low dam is located between the plain lonely hills about 5.5 kilometers south of the Gukou high dam, and there are four of them.

The part of the embankment in front of the mountain mainly refers to the Tangshan site, which is east-west, with a nearly curved ruler shape and a double dam structure in the middle section. It is the largest single project in the water conservancy system.

The dam, which is divided into high and low levels, works in conjunction with the piedmont causeway to keep a large number of pigs in the valley and in the lowlands.

It can roughly block 870 milliliters of continuous precipitation in a short period of time, and this rainfall, even now, belongs to the standard of once in a century.

It can be said that the water conservancy project and the dam embankment made by the Liangzhu people 5,000 years ago are a very good water conservancy design even if they are put in modern times!

According to the estimation of the location of the spillway by water conservancy experts, the entire water conservancy system has formed a water storage surface of about 13 square kilometers in the north and northwest of the ancient city of Liangzhu, with a storage capacity of about 2.75 million cubic meters.

This is the earliest large-scale water conservancy engineering system found in China so far, before the discovery of the Liangzhu water conservancy system, China's water conservancy history, generally starting from more than 4,000 years of Dayu water control.

The water conservancy system in Liangzhu has pushed forward the struggle between the Chinese nation and water for 1,000 years.

This is also a part of the scholars to associate the "Liangzhu civilization" with the legendary Dayu.

It is believed that Dayu may be a descendant of Liangzhu.

About 4,200 years ago, there was a great flood in the Hangzhou Basin, where the ancient city of Liangzhu is located.

The entire Hangzhou basin was flooded, forming a floodplain more than a meter thick, and the area became unsuitable for human life, and the ancient city of Liangzhu has since disappeared.

The Hangzhou area became the Ze country, and it was not until 2000 years later that people lived in the Warring States Period, which is also the reason why the Central Plains later saw that Wu and Yue were still short tattoos.

After the flood, the surviving remnants of Liangzhu were divided into two groups, one moved west to Shaanxi and the other went north to Guangdong.

Because in the period of more than 4,000 to 3,000 years ago in these two places, Yucong, a representative ritual vessel of Liangzhu, was discovered.

And Dayu and his father Kun are from the west of the Central Plains.

Yu migrated east with his father Kun when he was a child and came to the Central Plains. His father, Kun, was enshrined in Chong by Emperor Yao.

Later, during the reign of Emperor Yao, the flooding of the Central Plains caused floods and disasters, and the people were miserable. Di Yao ordered Kun to control the water.

Kun was instructed to control the floods, and the Kun used the water barrier method, that is, to set up a river embankment on the bank.

This method of water control is exactly the same as the water conservancy project idea of building dams and setting up river embankments in the Liangzhu civilization.

They all want to use the method of blocking to trap a large amount of water in the reservoir.

However, the Liangzhu people have to deal with heavy rainfall, which can be blocked by a river embankment dam similar to a reservoir.

What Kun has to face is the raging flood of the Yellow River, and this kind of "water control method" passed down by the ancestors by word of mouth, of course, there is no way to solve the Yellow River.

Not to mention.

That sounds logical.

After all, from an archaeological point of view, the Liangzhu civilization is definitely the earliest and the most advanced creator of water conservancy projects in China.

If it is said that at this point in time of 5,000 BC, it is the Liangzhu civilization that wants to give a "little expert in water control".

It just so happens that there is Chong's where Kun is located, which is precisely known for being good at water control.

It is indeed a bit convincing to say that they are the descendants of Liangzhu who moved west after the demise of Liangzhu!