In addition to the above objective reasons, there is also a subjective reason, that is, Chang'an is the original capital of the Han Dynasty, and the Western Han Dynasty is the capital of Chang'an.

If you can return to the land of Emperor Gaozu Longxing, you will naturally be able to stabilize the hearts of the people in the world.

Chang'an is not the only place to meet the geographical safety and convenient transportation, and it is precisely considering the mentality of the people of the world that finally prompted Liu Hou to make up his mind to choose Chang'an as the imperial capital.

The matter of moving the capital is settled, in fact, according to Liu Hou's original intention, he didn't want to take this issue before destroying Dongwu, but the ministers repeatedly mentioned this issue, in their eyes, this seems to be a very important issue, so, for the sake of An Qunchen's heart, Liu Hou had to solve this problem as soon as possible.

Now that this problem is solved, it is time to go all out to solve the problem of Soochow.

After Liu Hou arrived in Jingzhou, he immediately sent envoys to Eastern Wu to persuade him to surrender.

He still adheres to that principle: if he can solve problems without fighting, try not to fight, and give priority to labor-saving methods if there are ways to save effort.

The second thing he did was to personally supervise the construction of cement warships.

By this time, two large cement warships had already been built.

It must be said that the construction of cement battleships is much more time-saving than the construction of wooden ones.

"Ship Research Institute"

Soon a cement battleship was designed, and then it was time for the construction phase.

Guan Gong summoned craftsmen from all over the world to gather in Jingzhou, and it took them a month to tie the skeletons of the two warships with steel wires.

Then the cement was poured, and the two docks were still started at the same time, and due to the large number of workers, the construction could be started at the same time in multiple parts, and it took only half a month for the hulls of the two battleships to be completed.

Then it took half a month to install the mast propeller, power turntable, anchor and other ancillary facilities, decorate the interior, and it only took two months to build two large cement ships.

On average, one ship is built every month.

The two newly built cement battleships are the same size and appearance as the two "super battleships"

Similarly, there are three decks, each with fifteen gun emplacements, forty-five guns can be placed on one side, plus a super cannon in the bow and stern, and a total of ninety-two guns ~ guns can be placed in the whole ship.

These two battleships and the original two wooden "super battleships"

Everywhere it is very similar, in fact, the "Ship Research Institute"

The researchers were able to come up with the design drawings so quickly, just because of plagiarism, oh, or rather, it was a reference to two "super battleships"

Drawings.

Of course, it is not a complete copy, there are still some improvements, because the weight of the cement ship is much heavier than that of a wooden battleship, so, in order for the ship not to sink, its displacement is designed to be more than that of a wooden "supership"

Much bigger.

In addition, there is a very different place in the appearance of the cement battleship, which has a long, sharp ramming angle in the bow, which is made of reinforced concrete, and it is believed that it will become a nightmare for the enemy's wooden warship.

After the completion and launch of these two cement warships, everyone discovered a strict problem, that is, the speed of these two ships is very slow, and it is outrageously slow.

These two ships are still referencing the "super battleship"

I take "dual power" in that way

: Use manpower or animal power to push the turntable, so as to drive the propeller to rotate; Driven by sails.

In the "Twin Power"

mode, wooden "Super Battleship"

Can run faster than all the Soochow ships, and even faster than their stern fighters.

However, the same "dual power"

Mounted on a cement ship, it is really not fast enough, only a wooden "super battleship"

half, even slower than the battleships of Soochow.

Liu Hou was disappointed by this speed, and it was only at this time that he realized that he had overlooked an important problem, that is, although the steel battleship and the cement battleship were good, they were both bulky things, and if you wanted to drive such a large thing, it was not enough to rely on the previous wind power and human and animal power, and it was necessary to have mechanical power.

He had never been more eager to build a steam engine.

He urgently contacted the institute's "Institute of Institutions"

to ask them about the progress of their research on the steam engine.

N years ago, Liu Hou dug Ma Jun from the Wei State, and later set up a research institute specializing in mechanical science (i.e., machinery), so that they could study machinery such as textile machines.

Ma Jun and Huang Yueying are the main members of this institute, and they are both grandmasters of institutional studies in this era.

In recent years, they have produced a lot of results, in addition to the power unit on the horse crossbow textile loom, the power unit on the hot air balloon, the power unit on the warship, and all kinds of processing equipment, they have also begun to study the steam engine.

Liu Hou asked this question to know that they had really built several steam drive devices, but because they could not solve the problem of air leakage, the efficiency of these devices was still relatively low and could not be applied to practice.

Liu Hou was very disappointed in this, but there was no good way, he knew that he had to use rubber to solve the problem of air leakage, but where to find rubber now?

Rubber trees seem to be native to the Americas, right?

It is said that in addition to rubber trees, there are many trees that also secrete resin, but the resin of other trees may not be so large, or not so easy to use, but in any case, it can be tried.

Liu Hou wrote a letter, providing his own ideas for Ma Jun, Huang Yueying and others to refer to, asking them to find some resin, add acid or sulfur to react, and make suitable rubber.

There is only so much he can help, after all, he is not so familiar with rubber, and as for whether he succeeds or not, he can only rely on luck.

However, whether it succeeds or not, the steam engine that can be used as power cannot be made in a short time, and now we can only think of other ways to deal with the current situation first.

The solution is nothing more than two ways, one is to increase the power, and the other is to reduce the weight.

There are not many ways to increase the power, at most to increase the area of the sail, but it is impossible to increase it indefinitely, after all, there are many things to consider such as the balance of the hull.

All that remains is to reduce the weight, the hull has been cast, and there is no way to think about it, so you can only use your brains on the ship's objects.

In order to reduce the weight, Liu Hou finally decided to replace the fire ~ guns on both sides with rocket launchers.

Compared with the weight of hundreds of kilograms of guns and artillery mounts, the weight of the rocket launcher was reduced by more than a little bit, and the weight of the ninety guns was reduced, and the weight of the ninety guns was reduced, and the weight was suddenly greatly reduced, which increased the speed of the ship by one or two percent, but it was still slightly slower than the large warships of Soochow.

Although it is still unsatisfactory, it is not unacceptable, after all, the positioning of this cement ship is a strong firepower output and invincible defense capability, and it should be slower.

However, rocket artillery also has a weakness, that is, the accuracy is too poor, and most of the time it can only do covering strikes.

Therefore, the two heavy guns in the bow and stern of the ship, Liu Hou, still retained, and used them when he needed a precise strike, and used the rocket launchers on the side if he needed a covering strike.

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