Yuancheng Shipyard has a good news, this year, Yuancheng Shipyard completed the construction of three A-type ships, there is a large improvement of the A-type boat, in the case of the size of the ship and the load capacity of the change is not large, this improved version of the A-type boat in the river navigation speed is greatly improved, under the same conditions, its sailing speed even exceeds the B-type boat.

It takes about 40 days for a B-type boat to go to the easternmost fishing tribe of the Xia Kingdom, and with the improved A-type boat, the time will be shortened to less than 34 days.

Su Yan immediately ordered to stop the construction of the old version of the A-type ship, and to build a new version of the A-type ship in the future, and at the same time, the Zhoucheng shipyard should learn from the Yuancheng shipyard and improve the B-type ship.

Although the new version of the A-boat and the old version of the A-boat have not changed much in terms of ship size and carrying capacity, there are many changes in the structure, and the old version of the A-boat cannot be upgraded to the new version of the A-boat, but fortunately, the old version of the A-type ship can also be changed a little to slightly increase the speed of the old version of the A-boat.

According to the shipbuilders' estimates, it would take about forty-five days for the old improved A-boats to sail to the fishing tribe, and more than fifty days for the unimproved A-boats.

Everyone knows that ships sail fast and can carry a lot of goods, but it also depends on who they are like, and the speed of people running fast cannot be compared with the speed of ships, and it is different if they are replaced by horses, not only people riding horses are faster than ships, but even the speed of horse-drawn carriages is faster than the speed of ships.

Limited by the problem of roads, and the number of horses as the problem, the development speed of land transportation in Xia is far from catching up with the development speed of water transportation, as long as there are rivers, the ships of Xia can sail everywhere, Xia itself is a country built around the Yellow River, and every city in Xia is adjacent to the river.

In the future, the Xia Kingdom will inevitably develop inland, and the city will be built in places where there are no rivers, and then it can only rely on land transportation, but water transportation is still the focus of development.

Fifteen years ago, the dragon tribe made the first A-type ship, fifteen years have passed, and now there are a total of forty-five A-type ships and eight B-type ships in the Xia Kingdom, and in fifteen years, many shipbuilders have emerged in the Xia Kingdom.

Su Yan didn't know much about shipbuilding, so he could only rely on these shipbuilders to explore a little bit, and then, the B-type ship, which was bigger and faster than the A-type ship, was built, and now the A-type ship was improved faster than the B-type ship.

When the time for the autumn harvest came, most of the ships of the Xia Kingdom were sent out to bring back the nine tribes that had decided to join the Xia Kingdom, and the Xia Kingdom was also in the midst of a tense autumn harvest.

Last year's floods and this year's drought, although Xia has relatively complete water conservancy facilities, extreme climate change still has a great impact on Xia country's grain production.

You must know that with the increase in the number of cities in Xia, the increase in population, the increase in cattle and horses, the increase in the cultivated land area of Xia country year after year, and the new varieties of high-yield crops that continue to expand the planting area, it stands to reason that the grain output of Xia country will also increase year after year, but this year's grain output has hardly increased much compared with last year's grain output, which shows the impact of extreme climate change on Xia country.

Fortunately, the current situation is still within the tolerance of the Xia Kingdom, and the cities of the Xia Kingdom increase the number of people fishing by the river every day, and the extra man-hours of the Yuancheng Shipyard and the Zhoucheng Shipyard are used to build fishing boats, and the food that has not been the staple food for many years has been replaced by fish, and the practice of various fish has been spread from the palace, to the cities of the Xia Kingdom, and to every household in the Xia Kingdom.

Of course, you can't eat fish all the time, you have to eat some food, and the saved food is well stored, even if the population of Xia Country skyrockets, the food stored in Xia Country is still enough for all the citizens of Xia Country to eat for more than two years.

The autumn harvest is over, several fleets of the Xia Kingdom traveled twice in a row, moved the nine clans to the Xia Kingdom, and stayed in the three new cities of the Xia Kingdom this year, the three newly built cities are the fourteenth city, the fifteenth city, and the sixteenth city of the Xia Kingdom, the first two cities are located in the east of Zhongjing City, and are divided into the south and north banks of the Yellow River.

The sixteenth city is located in the west of Zhongjingcheng, more precisely in the west of Hucheng, on the east bank of a tributary on the south bank of the Yellow River, and very close to the residence of the Niu tribe, which was once wiped out by the Dragon Tribe.

The establishment of the sixteenth city represents Su Yan's desire to let the Xia Kingdom develop to the south, and the seventeenth city to be built next year will be located in the south of the sixteenth city.

After the autumn harvest ended, all the tribes in the Xia Kingdom and even in this land had no time to stop, and were still busy.

After several years of extreme climate change, people of various tribes felt that something was wrong, no matter how stupid they were, and they actively prepared, prepared food for the winter, prepared firewood and grass for the winter, and strengthened their houses, all for the sake of this winter, which lasted longer and colder.

Once upon a time, the ancestors of various tribes struggled to survive in this land, when the population was smaller, the weapons in everyone's hands were more rudimentary, and the beasts with sharp teeth and sharp claws were the worst enemies of mankind, and the ancestors struggled to survive.

The number of human beings slowly increased, and exquisite stone weapons, rudimentary bows and arrows, crude rattan shields, and even rattan armor appeared, and wild beasts were no longer the great enemies of humans, but food, and the humans who have bred to this day have also encountered natural disasters again and again.

When a natural disaster comes, human beings will always find a way to survive the natural disaster, and if there is no way to survive the natural disaster, then the human race will have perished long ago.

The people of Xia Kingdom are making the final preparations, a cart of firewood and grass is pulled closer to the city, and then dispersed to a household, the food placed by each family is enough to eat, and the remaining firewood and grass is naturally as much as possible, and the fire under the stove burns day and night.

If necessary, Su Yan will also ask Xia Guo to mine the coal mines in the Yan clan's hometown in advance.

The men climbed ladders up and down the house to make a final inspection, fearing that the snow would collapse the house or that there would be cracks in the house and the cold would pour into the house.

Not only the houses inhabited by people, but also the animal pens inhabited by domestic animals should also be carefully inspected, this cold winter can freeze people to death, but also domestic animals, carefully strengthen the animal pen, the animal pen made of bricks, in the winter when necessary, also raise a fire to warm the livestock.

Everything is ready, the weather is getting colder, people are wearing thick clothes, and when the snowflakes are flying in the air, the winter of the fourth year of the summer calendar has officially arrived.