"The large counterweight trebuchet, that is, the Xiangyang cannon, the siege weapon of the Mongol Empire's civilization, requires 200,000 points."

Chutian saw the drawings of the large trebuchets often used by the Mongol army.

This kind of trebuchet, in the Battle of Yumen Pass and the Battle of Luntai City, made a great deal of power, caused great damage to the city of the Han army, and killed Wang Yanzhang.

Chu Tian has always coveted this powerful trebuchet, after all, this is a trebuchet used in the 12th century, which is more advanced than the trebuchet Thunderbolt used in the late Han Dynasty.

Chu Tian was thinking about how to attack Guanzhong.

At the beginning of the Han Dynasty, the first strategist Zhang Liang said to Liu Bang that Guanzhong left Kunhan, right Longshu, fertile fields for thousands of miles, Bashu in the south, Hu Yuan in the north, block three sides and defend, and control the princes in the east alone. Jincheng Qianli, the land of abundance.

It can be seen that Guanzhong is easy to defend and difficult to attack.

To attack Guanzhong, it is generally necessary to pass through two routes: Tongguan (Hangu Pass) and Wuguan.

The majestic Tongguan and Wuguan may be impassable Xiongguan, so Chutian is looking for a strong enough siege weapon.

Xiangyang ** paper appeared, which is equivalent to the most classic siege equipment of the Mongol Empire civilization, which can be exchanged.

Different civilizations have different characteristics, and the difficulty of acquiring some technology is also different. For example, the cost of obtaining the Xiangyang cannon for Temujin was lower than that of Chutian.

Now, Chutian can use the points to redeem directly.

"It's a good thing, but it's a pity that you need too many points. No, everything here is good......"

Chu Tian thought that he had enough points, but he didn't expect that there were countless valuable props.

There are only five hundred special items that can be exchanged by the lords of the Han Empire.

If you want to redeem them all, you may need tens of millions of points, or even hundreds of millions of points.

Chutian has a total of about 1.9 million points.

The Xiangyang cannon can effectively improve the siege ability of Chutian's army, so Chutian booked Xiangyang ** paper in his heart.

The power of the Xiangyang cannon, Chu Tian has already seen it.

"Next...... The Fubo Legion was expanded some time ago, and the shipyards of level 6 are not enough to use ......"

Chu Tian thought of the problem that the Fubo Legion had mentioned to him, at present, Chu Tian's forces were mainly sixth-level shipyards, and they could not build higher-level warships.

Therefore, Chutian specially checked to see if there were drawings of high-grade shipyards and drawings of large warships that could be exchanged.

Chu Tian's gaze fell on the "Longjiang Bao Shipyard Construction Drawing", this special drawing.

When Chu Tian saw this name, he seemed to feel a little familiar.

"Zheng He's ...... to the West"

Chu Tian thought of a familiar story.

During the period of Zhu Di, the ancestor of the Ming Dynasty, Zheng He once went to the West seven times, once as far as East Africa.

At that time, shipbuilding in the East was at the forefront compared with Europe and the Arab world.

That's why Zheng He had the capital, leading a huge fleet to the West seven times to promote national prestige.

Zheng He's fleet can be traced back to the period of Zhu Yuanzhang, Emperor Hongwu.

Zhu Yuanzhang and Chen Youliang launched a large-scale water battle in Dongting Lake and fought to the death. At that time, Chen Youliang, one of the leaders of the rebel army at the end of the Yuan Dynasty, had a powerful naval army, which left a deep impression on Zhu Yuanzhang.

Further back to the Yuan Dynasty and the Southern Song Dynasty's shipbuilding.

Civilization is one and the same, and technology is no exception.

Longjiang Bao Shipyard was opened to build ships during the period of Zhu Yuanzhang, Emperor Hongwu, and most of the treasure ships used by Zheng He in the West were also built in Longjiang Bao Shipyard.

Longjiang Bao Shipyard belongs to the ninth-level shipyard, which is already quite advanced, almost the highest shipyard in the Eastern Han Dynasty.

The ninth-level shipyard should be sufficient.

Chu Tian thought about it, the Fubo Legion didn't have a tenth-order warship to build, so the ninth-level shipyard could already meet the needs of the Fubo Legion for the next ten years.

As for the tenth-order warship, Chu Tian couldn't imagine what warship was a tenth-order warship.

"By the way, you also need the production drawings of high-level warships."

Shipwrights must have a blueprint of the ship in order to build the corresponding ship.

The shipyard was just a place for the production of warships.

Chu Tian glanced at the list of exchangeable items and found the battleship construction blueprints that could be exchanged.

"1,500 material ship construction drawings, 200,000 points. Zheng He's treasure ship (2000-5000 materials), 500,000 points are required. ”

Chu Tian was shocked when he saw the drawings of Zheng He's treasure ship.

I didn't expect that there was a treasure ship of Zheng He in the exchange list this time.

However, Zheng He's treasure ship was originally one of the achievements of the Eastern Han Dynasty civilization, so Zheng He's treasure ship is no exception.

"Do you want to exchange Zheng He's treasure ship?"

Chu Tian took a look at the introduction of Zheng He's treasure ship.

The hull of such a treasure ship is large, but it is not a specialized gunboat.

The soldiers of Zheng He's treasure ship can also be equipped with firearms and have a certain combat effectiveness, but in naval battles, compared with the later specialized warships, they are actually a little less interesting.

In the era of Zheng He's treasure ships, ships were not equipped with large bronze artillery, because at that time, water warfare mainly relied on broadside battles, ramming, crossbow arrows and firearms, and firearm technology was not developed enough.

The purpose of building Zheng He's treasure ship was more to show off the national prestige.

There is a very interesting thing, in the middle of the Ming Dynasty, when the Fengzhou (equivalent to the later Zheng He's treasure ship) went to the Ryukyus, because the ships were too large to operate, when the fleet arrived in the Ryukyus, there was suddenly no sea breeze, and the Ryukyu Kingdom could only use more than 50 rowing boats to drag the Fengzhou into the port. Later, on the return trip, the fleet encountered strong winds, and the mast of the sealed ship was broken and the rudder was lost. The shipwrights suggested that the government use smaller, more maneuverable vessels, but the government insisted on larger ships because of the loss of authority.

A person like Chu Tian, who attaches great importance to pragmatism, does not care very much about showing off his national prestige, nor does he deliberately engage in tributary trade. He would rather colonize than do a loss-making business. In the age of the jungle, there is no need for mercy.

Zheng He's treasure ship belongs to a type of fortune ship, one of the pinnacle ships of the Cold Weapon Age.

Later, in the late Ming and early Qing dynasties, the Fu boat was gradually replaced by the bird boat, which is equivalent to the Karak sailing ship in the West being replaced by the Galen ship, because firearms are advancing.

Therefore, Zheng He's treasure ship is not the best warship in "Lord", and the best warship in the Eastern Han Dynasty is the big bird ship, that is, the large bird ship, which uses large-caliber bronze cannons as the main means of attack, and the difference between the two is 200-300 years.

Chu Tian thought of this, and specifically checked to see if there were any construction drawings of the Big Bird Ship.

However, Chutian did not see the big bird ships that began to be active on the southeast coast at the turn of the Ming and Qing dynasties.

Chu Tian looked again to see if there were any Western carrak sailboats, or even Galen galleons.

Galen galleons appeared in Spain in the middle of the Ming Dynasty, and Western shipbuilding began to advance by leaps and bounds, and like the big bird ships, they were specialized gunboats.

However, Chu Tian did not see the Galen sailboat in the exchange list.

It stands to reason that there should be a blueprint for the construction of the Carak or Galen in this national war.

The lords of the Eastern Han region did not see this special item, so it is very likely that the Karak or Galen sailboats appeared in the exchangeable list of the lords of the Western Continent.

The Great Bird and Galen had to be equipped with bronze cannons in order to be effective.

Chu Tian also didn't see that there were bronze cannons that could be exchanged.

But he saw a special weapon blueprint - a large bowl of mouth guns.

"What kind of firearm is this?"

Chu Tian didn't know much about early firearms, so he took a special look at the names and introductions.

[Name]: Large bowl mouth

[Grade]: Bronze firearms

[Description]: A primitive small artillery, no sights, short barrel, slow rate of fire, short range, low hit rate, used in the early Ming Dynasty to the early Qing Dynasty, can only be equipped on the Fu boat, bird boat.

[Specifications]: The diameter is three inches and four minutes seven, one foot and one inch long, and weighs sixty-three pounds.

[Effect]: Comes with armor piercing and injury worsening effects.

[Points required]: 100,000

[Number of redemptions]: Unlimited

The big bowl weighs 63 pounds, and in the water war, the power is not huge.

This firearm, which can be equipped on a fortune ship, is equivalent to an enhanced version of the fire gun (fire door gun).

The power of the big bowl can't smash through the ship's board, because the weight of a real bronze cannon is hundreds to thousands of catties.

However, during the period of Zhu Yuanzhang, Emperor Hongwu, this weapon was mixed with bows and arrows, and it was one of the most advanced weapons at the end of the Cold Weapon Era.

In order to strengthen the power of the fortune boat, Chu Tian still chose to exchange this special firearm, and in the future, water battles will not only use crossbow arrows to injure the opponent's sailors and soldiers, but also use large bowls to attack.

"Exchange for 1,500 fortune boats."

After weighing it, Chu Tian chose the 1500 material fortune ship, which was smaller than Zheng He's treasure ship.

The size of this kind of warship is already quite large, with a length of about 45 meters to 50 meters, compared to the current 30-meter-long 400-material Fukufu ship and 35-meter turtle ship, the 1500-material Fukufu ship is equivalent to a giant ship.

The drawings of Zheng He's treasure ship are too expensive, and the treasure ship that is too big lacks mobility in water warfare, and cannot be turned into a gunboat in the future, which is ultimately a matter of cost performance.

Chutian only has 1.9 million points, and if he wants to change Zheng He's treasure ship, he needs to pay 500,000 points, which is too luxurious for Chutian.

Therefore, it is better to save a point.

Chutian used the 1,500-material fortune ship to make the transition, and then managed to get the construction drawings of the big bird ship or the Galen sailing ship in the future.

The warships of the Fubo Legion will be the flagship of the 1,500 Fukuship, the escort of the 400 Fukufu, and the turtle ship to defend the port.

400 ships are also essential, whether for fire attack or considering mobility, a group of smaller ships is required.

The larger the size of the ship, the higher the cost.

Chutian exchanged a total of 4 drawings: Xiangyang Cannon, which consumed 200,000 points; A large bowl of guns, consuming 100,000 points; Longjiang Bao Shipyard (ninth-level shipyard), consuming 300,000 points; 1,500 Fu ship, consume 200,000 points.

The four drawings consumed a total of 800,000 points from Chutian.

Chu Tian got the three things in his hands, and there were only 1.1 million points left.

"It's too expensive, everything is good, nothing can be missing. It's a pity that the points are consumed too much......"

Chu Tian felt a pain in his flesh, these four drawings, Chu Tian couldn't help but exchange them, otherwise he didn't know if he would have the opportunity to exchange these priceless drawings in the future.