This is Zhang San's third year in the Great Song Dynasty, and in three years he has gone from an obscure capital to the king of a country with two million subjects.

I think Zhang San can be regarded as a force, but the force is indeed not stable, looking at the people under him are all loyal, but that is only because Zhang San is strong enough now, if Zhang San encounters a little difficulty, I don't know how many people will be willing to continue to follow.

What Ryukyu lacks most now is the precipitation of time, many people only harvested a crop after coming, and did not open up a few acres of land, because there were not enough cattle, so the food grown was only enough for their own family.

So seeing that the people have stabilized, but how many people cherish their homeland and miss their hometown Zhang San really can't guarantee it, so Zhang San is also very nervous after the limited opening of the sea ban.

In the end, everyone's preference for land outweighed their attachment to their hometown, and there were very few people who were willing to flee back to the Great Song Dynasty.

Originally, many things could have been suppressed in the absence of a political power, but now that the political power has been established, the problems that were originally hidden must be solved now, otherwise the people's hearts will be uneasy.

The first is to formulate all kinds of laws, even if it is a high-level law, but the criminal law and civil law still have to be formulated recently, fortunately, there are really many people who study law in the Great Song Dynasty, and the familiarity with the laws of the Great Song Dynasty makes the new formulation much more convenient.

Zhang San didn't understand much about this, but just said a little bit, canceled the death penalty for the Han people, and exiled them to desert islands instead, Zhang San also hoped that through such exile, the Han people could occupy as many islands as possible.

As for whether it can deter crime, Zhang San knows when he thinks about Robinson that this kind of place is really who goes, and all other criminal detentions have been changed to re-education through labor, and now labor is still very valuable and cannot be wasted in prison.

Wen Huanzhang came to Zhang San and raised the issue of ploughing cattle, which seriously hindered the use of Ryukyu productivity and made many prime-aged laborers tied to the land, so the introduction of one ploughing ox was equivalent to the introduction of three or five strong laborers.

Most of the Ryukyu immigrants were proletarians, and the Ryukyu part of the bison was difficult to subdue, and the purchase of cultivated cattle from the Great Song Dynasty did not go well, especially after the coastal prefectures and counties strengthened their local control.

Originally, farming cattle were property that needed to be registered, and buying and selling needed to be filed with the clerk and government of the tooth shop, so there were very few farming cattle on the black market, and now the coastal areas should have strengthened the household registration management for Zhang San's harassment, which made Zhang San have fewer channels to obtain farming cattle.

However, Wen Huanzhang not only brought problems, but also brought solutions, that is, from places such as South Vietnam and North Vietnam, which did not control the cultivation of cattle like the Great Song Dynasty, so it was still very convenient to buy.

In addition to the problem of money, there is also the problem of boats, which can be transported from the coast of Fujian and other places in two days or three to five days, but if they are transported from South Vietnam and North Vietnam, it will take about five to ten days.

Originally, the cargo ship had some isolated livestock barns, and there was no problem even if it was not kept in the ordinary freight yard for three or five days, but now in the face of the need for such long-distance transportation of livestock, this kind of ship is not good.

Therefore, Wen Huanzhang hopes that the shipyard can build a special ship for transporting livestock, which can ensure that the transported livestock can reduce accidental deaths in long-distance transportation, which is still very important to Zhang San.

It's not just a matter of ploughing cattle, there are many things involved in the transportation of livestock, the first is the need for war, Zhang San wants to raise horses on Jeju Island, so if you want to find a way to transport horses to Jeju Island, you need a boat, right?

When there is a war, you need a ship to transport horses back from there, right? In other wars, cavalry was indispensable, so specialized livestock carriers were also needed.

Zhang San also counted on introducing some Arabian horses to improve the horse population on his side, and without a special livestock transport ship, it would be difficult to transport horses from Arabia thousands of miles away.

So after hearing Wen Huanzhang's report, Zhang San immediately went to the shipyard to study the construction of a special livestock transport ship.

The craftsmen absorbed some of the parts of the Tokai-type warship, improved the length-to-width ratio of the Fukubune, and increased the speed, but the flat-bottomed design of the Fukubune did continue to be used, which was more conducive to resisting wind and waves.

Livestock transportationZhang San feels that the first priority is ventilation, if there is no good ventilation conditions in the crowded environment of long-distance transportation, then under the breeding of bacteria, livestock is easy to get sick on a large scale.

The second is epidemic prevention and isolation, without perfect epidemic prevention, it may be that as long as the animal gets sick, then it will die and a boat, so we must fully consider the convenience of epidemic prevention, as well as the effectiveness of isolation.

The third is forage and clean drinking water, animals eat more than people, so in the case of long-distance voyages, forage reserves and drinking water are also the top priority, drinking water needs to be boiled, but how to prevent mildew in a humid environment should be carefully considered.

After all things considered, livestock can only be on the lower deck and two floors, with chord windows on both sides, so that as long as there is no storm at such a height, there will be no water, and below is the cargo hold of the watertight compartment design, with forage in the middle, drinking water below, and sometimes some ballast cargo according to the center of gravity of the ship.

Although Zhang San also knew that livestock needed a certain amount of movement, the ship was too small after all, so he could only expand the livestock pen a little.

A cow has to eat 30 to 50 catties of forage a day, drink 5 to 10 catties of water, and concentrate feed for 3 to 5 catties, and a cow is about 1,000 catties, so how much can a 2,000-stone boat hold?

According to the consumption of one stone a day for two oxen, and the weight of ten stones, a cargo ship of 2,000 stones can transport a hundred cows for more than ten days, which should have been twenty days, but what about the people on board? There are more than 100 people operating a boat, which is one or two hundred stones, and the food and drink materials also occupy a certain tonnage.

Therefore, after Zhang San's calculation, this kind of 2,000 stone boat is not cost-effective at all, this kind of ship must start from 5,000 stones, and it can transport 300 cattle for 20 days at a time, so it is worth this trip.

After the ship model is made, the construction will begin, the first batch of two ships will be built, the construction period will be six months, and after the completion of the construction will be next summer, and in the short term, it is still necessary to rely on the Great Song Dynasty to find a way.

In fact, there is another way, that is, to build a warehouse along the island chain, and build a corral on the island, so that although the efficiency of transportation is slow, but the survival rate of livestock can be guaranteed.

Although Dongsha Island is very close to the Ryukyus, the boats from South Vietnam have been here for five or six days, and it is a good time to rest, replenish fresh water and fodder, and drive livestock ashore to recuperate for a while.