Datang: Li Shimin begged me to rebel

Regardless of men or women, as long as they are in good health, Datang needs it!Everyone will be assigned a job accordingly, whether it's weeding, leveling, or whatever, there's a job for everyone.

The other is to raise the height of the existing wharf, pile up the detection channel and so on.

Although this pier is not comparable to that of Datang, it is almost the only external pier in Silla, so the waterway of this pier has actually been expanded for hundreds of years.

Whether it is a seaport or a river port, the ancient wharves almost always follow the principle of wide bays and deep waters. Building ports in places with bays can avoid the impact of waves caused by violent storms.

The depth of water naturally allows a large number of ships to be docked.

The same is true for the port near Jincheng. The water depth of the current pier is estimated to be at least seven or eight meters deep.

This depth can fully satisfy Datang's main battleship, a warship with a full load displacement of 2800 tons, and the full load draft of Datang's main battleship is only 4.5 meters.

But because the ships are tall, and the pier here is too low, it is very troublesome to load and unload goods, so Li Daozong and the others want to re-expand and build the pier.

Ancient piers are different from modern piers deep in the ocean, especially seaports. Even if there is a natural bay, it is difficult to build a large port because of the depth of the water. At most, some small piers can be built to dock some small fishing boats. .

It was very difficult to build a large seaport in ancient times, so there is a natural bay forty or fifty miles northeast of Gyeongju where a port can be built, which is where the later Pohang City of South Korea is located.

It will be one of the most important ports in South Korea in the future, but now there is only a small pier used by some fishermen.

Similar to the wharves of later generations of seaports, Datang has already started construction, but it can only be built with reinforced concrete. It is not impossible to build wooden wharfs, but it is possible to dock fishing boats, etc., but it is too difficult for large warships.

In addition to these, at present, no matter whether it is Datang or the seaports of other countries that rely on the sea, to be precise... they are still river ports.For example, Datang, whether it is Guangzhou Port or Shanghai Port, is actually built in the estuary of the river, not really near the sea.

The reason for such a construction is naturally because the construction of the river port is easier. The place near the river bank starts to fix the bank by piling and other methods.

Because it is close to the river bank, it is not too difficult to dig deep.

Such a port can be built soon, which is much less difficult than the construction of the coastline, and the wind and waves are smaller and safer.

The current port of Jincheng, to be precise, is a river port, and its exact location is the Taehwa River in Ulju County, South Korea.

Although the Taehe River is only a river less than [-] kilometers long, it is estimated that it will be a stream at most in Datang, but it will be a river in South Korea in the future.

Because the Golden City of Silla is the closest to here, the port here is also developing the fastest. Of course, it is also because the current ships have low requirements for the port and water depth.

If a deeper ship is required, it is estimated that Busan, which is not far next door, will develop, but the pier in Busan is not as good as here.

The construction and expansion of river ports are much simpler than seaports.

Li Daozong did not plan to build a wharf extending into the river, but just build it directly on the edge of the embankment, and just extend and expand the wharf.

But unlike the original wharf construction, where the foundation piles were laid first and then the outer soil was dug out, this speed was too slow. Li Daozong decided to lay the foundation piles directly from the river bank to the water for a distance of about one meter.

The water depth at this distance on this section of the river bank can basically reach about seven or eight meters, which is enough for Datang ships to dock.

If the foundation piles are laid, it will not be a problem to have an extra 2000-meter-long wharf.

The choice of the foundation pile is a 15-meter-long steel pipe that is as thick as an adult's arm and shipped directly from Datang.

These steel pipes are steel pipes that are rolled directly and cast together by forging.

However, it will take until the second batch of cargo ships to arrive. The total distance is about 2000 miles. At Datang's current speed of sea ships, and the ship can sail at night, it will take less than two days to arrive.

It only took four days to go back and forth.

Before that, you only need to do the work in advance, for example, after laying the foundation pile, prepare a large amount of filler to fill the gap between the foundation pile and the shore.

For example, a large amount of crushed stone is directly filled into the sack, and then thrown into it to build the foundation. This is the fastest filling construction solution.

The reason for such a construction is mainly to build the pier higher later, so that after the ship docks, the loading and unloading of goods will be more convenient.

But this requires a lot of stones. It just so happens that there is a mountain not far from the port, and there is definitely no shortage of stones.

There is no shortage of food in the Tang Dynasty. There may not be enough tools in this era, but in this era you can hire enough people at a very low price.

Various tools in later generations may be able to dig a lot of stones in a day, but in this era, it doesn't matter if there are not many stones, as long as there are enough people.

As long as there is enough time, Li Daozong can employ tens of thousands of people here.

Even if one person transports only 5 kilograms per day, 500 people are [-] million kilograms, or [-] tons.

One person transports [-] kilograms, which is [-] tons.

Anything, as long as the base is large enough, it can have a terrifying effect.

What's more, this is the capital of Goguryeo, with a population of more than [-]?As for the cost of hiring them?

A person has four catties of grain a day, and 10 people can only transport 200 tons of grain a day. However, a main transport ship of Datang can transport 1500 tons of grain in a five-day round trip with a full load.

This is just a ship, and Datang now has at least dozens of transport ships like this.

Therefore, Li Daozong did not lack any supplies at all, not to mention... Salt is far more valuable than food in Silla.

In Datang, the cost price of a catty of salt was even much lower than that of a catty of grain, while in Silla, only [-] catties of grain could be exchanged for a catty of coarse salt.

More importantly, in many cases, you have twenty catties of grain, but you may not be able to exchange for salt.

But now Li Daozong has a lot of salt in his hands. As long as you work for three days, you can exchange one catty of salt, or twelve catties of grain.

Such a salary can be said to have caused a huge commotion around the entire pier, and spread in all directions like ripples in the water.

The matter of hiring coolies is spreading, but the conversation is divided into two ends. On the other side, those inconspicuous beggars all came back around noon.