When going to the Chinese army, Jiang Jie talked about Changsun Guo for no reason:

"My lord, today my subordinates heard someone bragging, saying that it was the Lantern Festival of Changsun Guo this year, pulling back a big boat from the sea, the volume is amazing, it can hold more than 30,000 stone goods, the mast is higher than the city wall of Xiaochi, and the ship is full of white sails, saying that it is a sacred object given to Changsun by God, my lord, you say it is not bragging."

"Hiss......" Baili Yanmeng stopped his steps, and his chest suddenly sank: "You repeat, it's 30,000 stones, 3,000 stones!" ”

"My subordinates also thought it was bragging, how could there be a big ship in the world that could hold 30,000 stones, and 3,000 stones was about the same."

"You just said that it was the eldest grandson who pulled it back from the sea!"

"Yes, it's still pulled back from the sea outside the sea, the masts are more than ten zhang high, my lord, look at this bullblowing, is it unfounded."

"Shhh...... At sea, you mean at sea! ”

"Yes, it's the sea!"

Bai Liyan frowned and his face was gloomy, he only thought of one question at this time, such a large wooden ship was definitely not from the Central Plains, nor could it be a warship of the Jinxuedi people, if it really existed, it must be from other civilizations in the northern hemisphere.

The largest cargo ship that can be built in the Central Plains can carry four or five thousand stones, each stone is about 117 catties of Liang Guo's standard catties. It is estimated that every catty of 100 li Yan is about 456 grams, which is less than 500 grams per catty in China.

In view of the fact that the volume ratio of wooden ships is greater than that of modern ships, the square coefficient is 0.55, and the displacement of a wooden ship with a load of 5,000 stones is about 9,100 stones, which is about equivalent to a small boat with a displacement of less than 600 tons, and a displacement of at least 2,800 tons with a load of 30,000 stones.

This tonnage is larger than the tonnage of the British first-class sail battleship Victory, and if the error of visual inspection is not taken into account, a wooden ship of this size has more than 900 standard personnel and can accommodate 1,2300 people when fully loaded, so it can also ensure three to four months of self-sustaining power at sea.

Subject to technology, the Central Plains built 5,000 stone ships, expensive and long-term, not everyone can be early, the whole Central Plains is rare, the main carrier of water transport is still 1,000 stones, 2,000 stone ships, 3,000 stones, 4,000 stone ships have a big country to build, Xianguo only has more than 40 3,000 stone ships, 4,000 stones is not one at all.

Now a wooden sailing ship with a load of 18,900 tons has inexplicably floated on the north coast of Changsun Country, if it is true, it can only mean that a higher-level civilization has appeared on this planet, and it has been industrialized.

Because in the case of wooden ships, the displacement of more than 1,2300 tons is already beyond the mechanical limit that oak wood can bear, so it is necessary to reinforce and bear the weight of steel parts of large structures, which requires powerful forging presses, extruders and certain metal cutting machines.

Although the British Victory sail ship itself is a wooden warship, the main structure still uses steel forged parts, otherwise it is impossible to build such a huge wooden sail warship, because no matter how good the wood is, the mechanical properties of the wood itself can no longer meet the simple material accumulation.

And it's just a first-class sail warship, which means that there should be more ships of the same tonnage, otherwise why not float other ships of smaller tonnage.

Compared with the British Empire, which only built one Victory in its heyday, and now a sail warship larger than the Victory is casually floating, which is more indicative of the unknown potential civilization, just using a warship of this specification as an ocean-going exploration ship, and perhaps a larger warship is cruising on a certain ocean surface of the unknown sea, and I don't even know when, like the colonists killed hundreds of millions of Indians, all the Central Plains people will be killed, which inevitably makes Bailiyan start to worry about the future.

"What a damn ......"

Muttering, Jiang Jie was puzzled, so he immediately asked:

"What's wrong, sir!"

"There could be big trouble now!"

"Big trouble?! Adults don't think that there really is a heavenly ship in the world that can hold 30,000 stones. ”

"Now that you don't understand, let's go see the teacher first."

"Oh......"

Wave after wave of unevenness, the Central Plains is half a generation behind Jin Xuedi's technology, and even more backward two generations behind the unknown civilization of industrialization, Bailiyan can hardly imagine how the bronze civilization can face the looting and slaughter of strong ships and cannons.

When she came to the Zhongjun tent, Bai Liyan retracted her gloomy face, barely squeezed out a little smile, and saluted Sai Qian respectfully:

"Apprentice to the teacher."

"Hehe, why do you and my master and apprentice need to be so polite, come and sit."

"Master Xie."

Sitting down, Bai Liyan immediately asked:

"Master, are you here for a battle?"

"Well, at present, the main forces of various countries have arrived in the south, and the battle is inevitable, so the division is here to rush to the aid of Duhui and sit on the eastern front to prevent the barbarian army from sneaking up on my rear."

"How many reinforcements are there?"

"200,000, Su Fangyi is leading the army here, and there are about four days to get to Duhui. Be the first to visit your injuries. How, what's the injury? ”

"Thanks to the teacher's thoughts, the apprentice's leg injury has healed, but I am afraid that the shoulder injury will have to be recuperated for another half a year, and if it is not good, it will have to fall into the root of the disease. But as long as the teacher is called, the disciple will die! ”

"You are worthy of being a good apprentice for a teacher, but now that you are a nobleman, you still know the importance of being a teacher. Duhui, don't go, just stay in the industry with peace of mind. ”

"Master, the terrain within a radius of hundreds of miles is open, and it is not conducive to holding on, so let the disciples guard Duhui with you, and you and I will have a good response to the master and apprentice."

"Although Duhui is not conducive to holding on, the main force of the barbarian army is focused on the western front, and the eastern front only needs to be defended."

"That being the case, the teacher must be careful. Our coalition forces are stationed in the south on a large scale, and the shortcomings of the turnover of baggage are exposed, presumably the marshal will fight at this time, and must have expected the embarrassment of logistics, trying to seek a quick victory. However, Duhui is far away from the rear supply, and it is difficult to transport, so he should quickly hoard baggage before the battle is launched to prevent accidents. ”

The total strength of the coalition forces, including the civilian army, amounted to more than 1.9 million, and as many as 1.5 million men and women, more than 400,000 donkeys and horses, and tens of thousands of vehicles were transported in Qianyue Mountain alone. The civil power required by the vassal states to transport supplies from the interior to the south stretched for thousands of miles, and the number of people was not less than 10 million, and the grain and grass consumed in logistics were calculated in the amount of 5 million stone per month, and in the long run, the coalition army would be dragged down by logistics.

agreed with Sai Qian on the details of the defense, and Bai Liyan changed his words and mentioned the matter of the eldest Sun Guotianchuan mentioned by Jiang Jie before:

"Master, disciple just heard that during the Lantern Festival this year, the eldest grandson brought back a big ship from Beihai, which can hold 30,000 stones, but is there such a thing?"

"Well, that's true. The news first came from the Gang Gong faction, and then it was known to my imperial guests. ”

"So, the master of the Ligong faction has seen this ship?"

"I saw it, but Changsun Guo didn't let him board the ship, so I don't know what happened when the boat fell to the bottom. However, the ship was indeed huge, and it is rumored that it had a round head and a round head, and seven or eight large masts were erected on the deck, and they were hung with white sails, and they were round sails, which was very spectacular. Seeing that Baili Yan's face was different, Sai Qian hurriedly asked: "Yanzi, you are well-informed, it can't be that you have thought of something!" ”

"Teacher, the disciple has a sentence that I don't know whether to say or not."

"But it doesn't hurt to say it."

"In case there are barbarians in the north of the North Sea in the future, what will I do?"

"I heard that the north of the North Sea is an endless sea, the edge of heaven and earth, and it will never come to an end.

Sai Qian's words made Bailiyan speechless, and the people's cognition of the world in which they were located was only to see and touch the world in front of them, and they had no understanding of the unknown and distant other side of the ocean.

Indeed, it is occasionally recorded in many classics that the eldest grandson is in the extreme north, a hot place, looking north at the boundless sea, and the big ship goes north for a month without seeing the edge. It can be roughly known that the self-sustaining power of a fleet in the early years, that is, a round trip of two months, one way will not exceed 2,000 kilometers.

For the Bronze Civilization, the two thousand kilometers of ocean are vast enough to shield the invasion from civilizations from another continent, but only if all civilizations are at a relatively equal starting line.

But now, the Jin Xuedi people completed the popularization of iron tools before the Central Plains, and from another unknown civilization, even entered the late stage of the first industry in advance, and is opening the second industrial revolution, the sea will no longer be the barrier of traditional land boundaries, Bailiyan only hopes that the North Sea can be vast enough to give the Central Plains a chance to breathe.

On the same day, Baili Yan Liusaiqian ate hot pot in the camp, and the hot pot shabu shabu was popularized in the Xian army not long ago, and it was quickly imitated by the coalition forces in just a few months, and maybe it will not be long before it will be quickly introduced to the Central Plains.

That night, Bai Liyan didn't sleep all night, and her mind was still thinking about the big ship, what was in the bottom of the ship, whether there were people, whether it was drifting to the North Sea after the freshwater food was exhausted, or being captured by Changsun Guo for some other reason. It is not even excluded that the ship carries advanced weapons, perhaps, the era of thermal weapons is coming......

The next day, Sai Qian led his army to Duhui to garrison, and Shu Tong was still actively organizing the repair of the city and the hoarding of grain and grass in Duhui.

The barbarian army caused great damage to the city, in addition to using boulders to bombard the fire and oil bombs, the Jinxuedi people still used ointment, a very sticky grease, to stick to the surface of the city wall, and then set fire, igniting part of the city wall.

Under the hot expansion and contraction of the cold moon in the cold winter, the city wall is very easy to crack, and even collapse, Du Hui cracked and collapsed in many 23 places due to fire, Bailiyan also went to the scene to investigate, the largest gap is more than 30 steps, two zhang deep into the wall, the city wall is thick, and it has not collapsed to the bottom of the city wall, but it is extremely troublesome to repair.

Since the siege was lifted in March, only seven gaps have been repaired, and if all of them are to be repaired, after reinforcements are stationed, it will be completed in mid-to-late May at the earliest.

When Sai Qian left, he left behind a precious topographic map, a topographic sketch of two thousand miles south of the Qianyue Mountain coalition defense area. Prior to this, all the classics of the Central Plains could not find any news about the south.

The topographic map is basically consistent with the situation previously known, there are no cities for two thousand miles to the south, there are grasslands, primeval forests, swamps, and lakes, and the width of the east and west reaches more than 5,000 li.

Severely constrained by the highland climate and logistical supplies, it became extremely difficult to continue to expand the territory southward. The war could not guarantee the transportation of baggage 3,000 miles to the south, and all the grain could be consumed by the people on the road, which also increased the transportation cost of the Central Plains.

Therefore, in the past three hundred years, the Central Plains coalition army has never expanded a city to the south, and the current boundary is almost the limit distance that can be maintained by the current technical conditions.

In late April, Cao Chi was successively moving garrisons to Tiannan and Xutu, and at the same time training troops and horses in the east and north of Xiaochi, continuing to wait for the arrival of the main forces of the West Sea countries.

On the second day of the fifth month, Lu Cheng took the scout camp to train in the field, and accidentally found that the Jin Xuedi scouts were hiding in a grove forty miles west of Yesui, with a total of three people, killing one and capturing two alive.

"General, these two thieves were hiding in the woods at the time, and they were bumped into by the last general and caught, killed one, and caught two alive."

"Just three?" Bai Liyan asked, and couldn't help but feel unbelievable, Jin Xuedi's scouts dared to go deep into the rear of the coalition army to spy on the military situation, and they were really fearless.

"I found three, and the last general led people to keep watch all night, but I didn't find anyone else." Lu Cheng said.

"Go, bring Mr. Zheng here."

"No!"

Zheng Ping, Jin Xuedi's translator, is a rare talent specially allocated by Cao Chizheng.

As an important link between culture and intelligence, language is an extremely important tool. For hundreds of years, Xu, Song, and Wei have continuously cultivated a group of translators based on captives and thieves in the Central Plains, and Yuke is the main organization for training translators, which is more professional, and more than eighty percent of the translators are from Yuke's disciples.