Before Li Xu left, Lin Yi reminded him to be careful to prevent the Zhao people across the Yellow River from taking the opportunity to cross the river and invade the west, and also asked Li Xu not to attack the Qin border troops in Yulin Prefecture for the time being, so as to prevent the Mongolian Tatars in the north from taking the opportunity to invade the south.

Although Li Xu felt that this arrogant guy had always been a bit nagging, he could also feel that he was really thinking about Qin State and nodded to show that he knew.

In fact, there is no need for Lin Yi to remind you that Li Xu and Tan Lun have long thought of these things.

In addition to preventing the return of the border troops in the northern Qin State and preventing the Zhao State army from crossing the Yellow River invasion, Li Xu also made precautionary arrangements for the Qin army in Longdong.

However, Longdong was also harmed by Zhao Biao's thief army before. Although he has returned to the hands of the official army, he can only protect himself at most. He probably has no courage to come and test the quality of the Tang army.

Of course, there are still things to be done to prevent it.

In addition to the Land Division, Li Xu also arranged for Tan Lun to find a gentle river berth on the west bank of the Yellow River, intending to build a dock and a shipyard.

The docks of the Empire system are two-in-one with shipyards, which can not only moor ships, but also maintain and build ships.

In the age of the first nomadic peoples, fishing boats could only be built on the dock.

Armed transport ships can also be built after upgrading to the colonial era.

Although the armed transport ship is just a sloop sail and is not large in size, it is a very practical ship.

The gun cabin at the bottom of the ship is equipped with six small cannons, three on each side.

Above the gun cabin is a cargo cabin, which can carry cargo and transport personnel.

This type of armed transport ship can not only fish, but also act as a patrol boat to patrol the waters. If it encounters enemy ships, it also has quite good combat power.

As far as Li Xu knows, the main weapons used on the watercraft of various countries in the world are relatively primitive water war weapons such as crossbows and poles. The tactics are basically that the ships of both sides approach each other. First, they use crossbows to shoot each other from a long distance, and when they get closer, they use poles to hit the other warships. Finally, after they get together, they will rush over to fight along the bridge board.

Although there are artillery, there are basically only a few in the capitals of various countries and some strategic locations. After all, this thing is expensive to build for the production level of this era, and the bulky artillery itself makes it extremely inconvenient to use.

Li Xu hasn't heard of any country that installs artillery on warships.

So Li Xu could beat the navy from various countries on the water with armed transport ships.

Although the current construction limit for armed transport ships is fifty, it is enough for Li Xu at present.

In addition to armed transport ships, there is also a more advanced and more expensive heavy warship.

The length of this heavy warship is three times that of an armed transport ship, and its height is far greater than that of an armed transport ship. There are a total of eighteen artillery pieces distributed on it.

The caliber and barrel length of the cannon are larger and longer than the cannons on armed transport ships, so they are naturally stronger.

This heavy warship has a narrow and long hull, with three masts in total. Its power is stronger than that of an armed transport ship, and its movements are agile and flexible, making it very suitable for navigating inland rivers.

The construction limit for this kind of warship is currently ten, each of which costs three thousand taels of silver, while the construction cost of armed transport ships is five hundred taels of silver.

Li Xu arranged for Tan Lun to build ten armed transport ships and two heavy warships first, patrol the Yellow River, and monitor and prevent Zhao's army from crossing the river from invading.

Although the Zhao army is known for its cavalry and its naval forces are very weak, and it is basically unlikely to cross the river and invade, it is still necessary to form a navy.

Even if the Zhao army could not come, the Tang army could rely on the navy to harass the people of Zhao.

When you are stronger, you can run along the Yellow River to Wei to fight the autumn wind.

These warships will have their own sailors and sailors, and they will have a complete configuration. Each cannon on the ship will be equipped with a base ammunition.

However, the number of ammunition for a base of cannons is different from that for muskets. The base of muskets is 120 rounds, while the number of cannons is ten rounds.

According to Tan Lun's preliminary selection of the military dock, there is a river berth about 300 miles east of Yan'an City. It is near Yanshui Pass. The water flows smoothly, and opposite is Yonghe County of Zhao State.

The river here is wide and the water flows smoothly, which is very suitable for mooring warships.

Not far from the ashore is Yanshui Pass, the land pass, and after the wharf is completed, it can support each other.

Apart from the above arrangements, Li Xu has no intention of expanding it extensively.

At least, we have to wait until the situation in Yan'an Prefecture stabilizes, and when the accumulated wealth, materials and population reach a higher level, we will consider the next expansion.

After being harmed by Gao Bei'er once, Yan'an Prefecture not only caused a large amount of population losses, but also the fields were deserted, but all the original government offices were also cleaned up.

For Li Xu, this is actually a good thing. It is equivalent to Gao Huzi erasing the painting originally spent on the canvas of Yan'an Mansion. Li Xu can completely repaint a better painting according to his own ideas.

Although after so many things were arranged, Li Xu was about to continue to go back to be Yu Zecheng, but when he thought of so many things, he had to take charge of Tan Lun alone. There were not many civil servants under his command, and there were not even many minor officials who could handle the affairs.

Li Xu felt that he was so thrilling that fighting for the world seemed awesome, but it was still very tiring if he really wanted to do it well.

Although Tan Lun is capable and energetic, Li Xu felt very tired after thinking about all these things being pressed on him alone.

After all, he is a human being or not a god, and he will be tired and tired.

After the establishment of the Yanzhou General Administration Office, Tan Lun wanted to manage the military and govern the people, and took on the military and political leadership. Although he had the stronger his ability, the greater the responsibility, and he had never complained, but Li Xu knew that he had to find someone to share the burden for him.

According to Li Xu's vision, Tan Lun's future development direction will still develop in the direction of governing the people and governing the government.

Although Tan Lun was famous in history as a "famous general" in his original history, his ability to govern the people is definitely not weak, and he can be said to be a true figure who can become a general and a minister.

However, the focus is on restoring order and developing production to increase the population under governance, so Tan Lun must be here.

Then there must be someone leading the army to cooperate with Tan Lun, and many things will be back on track faster.

However, this person cannot be a pure military general. He also needs to know how to govern the people and govern the government. In the future, every time he conquers a place, he will definitely have to conduct military control first and then hand it over to a formal yamen.

It is difficult to find such a person, and Li Xu was so worried that his hair fell a lot.

But the night before he was about to leave Yan'an City, he heard a prompt sound from the backstage of the system.

That was another tip to save up to support cards.

Li Xu's thoughts moved, and his eyes widened.

Another talent card appeared in the new support card optional group.

The card is filled with light and thundering slightly, as if waiting for Li Xu to choose.

Li Xu resisted his excitement and pointed it casually. The light flashed on the card. He turned over the head. There was a man with a red scarf wrapped in his head, a thick beard, a firm eyes and a heroic face.

His name is written next to it:

"Shi Dakai"!
Chapter completed!