(Ask for a red ticket, and thank you for the vigorous support of the brothers such as the more vulgar theater, I am a Nantong person, and Nantong people know the more vulgar theater, hehe)

The situation in Jeju was critical, and the Goryeo Navy attacked the Jeju Fortress three times after November.

Lin Jian temporarily gave up going to the Shengsi Islands to inspect, diverted his route and returned to Chongzhou, and summoned Qin Chengzu, Lin Mengde, Hu Zhiyong and others in Chongcheng to discuss countermeasures.

Jeju Island (Danluo) is more than 100 miles deep, more than three times the size of Paracel Island, and there are large arable plains in the south, rich in products, and it is the largest island in the East China Sea except for the four Japanese islands.

Under the control of the Donghu people in Liaodong, Jeju Island is bordered by Goryeo in the north and faces the Japanese islands of Kyushu and Honshu across the sea, so its strategic position can be imagined.

Since ancient times, silk has always been a high-end fabric sought after by wealth.

Eight years ago, there was a catty of silk and a tael of silver in Pingjiang Mansion, and at the price of rice at that time, a catty of silk was worth two stone rice.

One acre of good mulberry field silkworm raising, cocoon reeling silk, can get eight catties of raw silk, worth 16 stone rice, but at the same time, the annual harvest of rice grain up to three stone of ripe field, in Pingjiang Mansion is already considered a good cooked land.

Compared with farming, it takes much more manpower to plant mulberry and raise silkworms; However, in Pingjiang Prefecture, which is relatively rich in manpower, the benefits of planting mulberry and raising silkworms can be seen.

Eight years after Chongzhou, the northwest successively drought, the world was in turmoil, the east invaded the south, the transportation was interrupted, and it was difficult for the silk of Pingjiang Mansion to cross the Huai River to the north to sell. The price of raw silk continued to fall, falling by about two-thirds, and a pound of raw silk was only worth a little more than three coins of silver.

At the same time, the price of rice and grain in Jiangdong County continued to rise, and the price of silk and rice was compared, and a pound of raw silk was only worth half a stone of rice.

Because it takes twice as much manpower to grow mulberry and silkworms, but after the market has shrunk sharply, compared with farming, the benefits of raising silkworms and producing silk are very meager.

However, at this time, in Kyushu, Honshu and Goryeo, a pound of raw silk was worth ten stone rice, which was twenty times the price of raw silk in Pingjiang Province; If you compare the prices of metals such as silver and copper, there is almost such a high difference.

To this end, Chongju has just built a silk reeling factory, and the first phase of recruitment of 1,000 female workers is aimed at purchasing silkworm cocoons from Pyeonggang and Haeyeong, producing raw silk, and transshipment from Jeju Island to Goryeo, Honju, Kyushu and other places to sell for profit.

In addition to raw silk, the prices of cotton, sugar, ironware, ceramics, tea, and other goods in Goryeo, Honshu, and Kyushu are much higher than in Koto County.

Even without considering the strategic value of Jeju Island, the value of opening a route from Chongju to Jeju and attracting merchants from Honju, Kyushu and Goryeo to Jeju Island for commodity trade is enormous.

At this time, the Kyushu and Honshu islands were more chaotic than the Dai-Yue Dynasty, and they were in the period of confrontation between the feudal states, and the market for high-end goods such as raw silk, porcelain, and tea was relatively narrow, but the demand for iron was great.

For those feudal tycoons who came to dominate Kyushu and the Honshu islands, even if they tightened their belts and were hungry, they wanted to buy more fine armor.

Lin Jian can plan to transport the fine armor produced on a large scale in Chongzhou to Kyushu and the islands of Honju to sell it at a high price, how can he not have Jeju Island as a transit base?

The Liang family can't infiltrate their forces into Qingzhou, can't control the Jiaolai River, and doesn't want to give Dongyang the benefits of grain to the Dongyang family, so they will inevitably restore the inland river transportation to a certain extent.

There is a bottleneck for Chongzhou to profit from the Jinhai grain road.

Besides, if the Yanbei defense line is completely leaked by the Donghu people, Yanjing cannot be defended, and the capital is moved to Jiangning, and Chongzhou will not be able to profit from the Jinhai grain road at all.

In this sense, Jeju Island cannot afford to lose.

"No matter how much it costs, Jeju must be defended, and the Koreans cannot be driven out!" Lin Lian's fist slammed on the table, which made Lin Mengde and the others tremble, for fear that Lin Lian would smash the table.

The high value of this wooden case placed in the Dongya Council Hall is not that it is made of sandalwood, but that the map carved on it can be said to be the most accurate maritime map in the world, which is not only intended to outline the geography of Jianghuai, Liangzhejiang and Shandong, but also the islands and important ports of Goryeo, Jeju, Kyushu, and Honju, as well as several main and secondary shipping routes using the Black Water Ocean Current.

One of the most important practical technical achievements of ancient astronomy was the ability to identify latitude, that is, to determine the angle between the stars and the sea level.

Jangsan Island is small, but it is located at about the same latitude as Jeju. This provides the greatest convenience for sailing from Chongju to Jeju via Jangsan Island, which is very easy to identify the location accurately.

After nearly two years of practice and spending a lot of money on the construction of a large directional lighthouse on Jangsan Island, the route from Chongju to Jeju via Jangsan Island has matured.

As long as it is not sailing in rainy weather, there is almost no possibility of a ship going to Jeju Island to get lost.

Under the impetus of Lin Bin, Chongzhou's navigation technology can be said to be ahead of the times.

"The Goryeo people's naval army is not strong, and they mainly concentrate on the southwestern sea to prepare for the Koukou, and concentrate on the first and second water battalions to defeat them in the past, and abolish their southwestern ports, so that Jeju Island can be free from their threat for a year or two......," Hu Zhiyong said.

The current situation of the islands such as Kyushu and Honshu also deviates greatly from the history in Hayashi's memory.

After more than 100 years of separation between the North and the South, the Fuso of the present and the Japan of later generations have evolved into a situation of more than a dozen feudal states, and there is no relatively strong unified regime.

Except for the Haikou, the Goryeo Kingdom was not much of a threat at sea, and there was no incentive to develop a naval army, which was limited in strength.

If it weren't for this, Ge Changgen would only be able to repel the invasion of the Goryeo Navy three times in a row with only 400 soldiers and only a battalion of Jinhae-class warships and three Jiyun-class warships.

"After Goryeo was defeated by the Donghu people, it became a subject state of the Donghu people, and most of the garrisons on its northern border were transferred back to the vicinity of the southern capital, very close to the southwest coast," Qin Chengzu said, "Although it is certain that its naval army will be defeated at this time, but with it, Goryeo will make every effort to strengthen its naval army, and will also strengthen the defense of the southwest sea frontier, which will add many variables to the future......."

"Didn't the Koreans intend to send troops directly to Danluo Island?" Lin Jian said, "Just lure the Goryeo army to the island to annihilate it!" ”

Although Goryeo is weak, it also has nearly 200 Dingkou, and there is also a relatively unified regime, when the Goryeo people concentrate their national strength on the defense of the southwest sea frontier, the strength should not be underestimated - this is what Qin Chengzu is worried about.

The Goryeo had just defeated the Dongyu and lured them to the island to annihilate or severely damage their foot soldiers, so they could continue to induce the Goryeo to focus on the construction of infantry and cities in the later period. In this way, the pattern of power in the Northeast Sea can be developed, and it will still be well controlled by Chongzhou.

"The Danluo people may not be willing to cooperate!" Lin Mengde said.

"The infiltration from the Shengsi Islands to the south should be slowed down for a while," Lin Jian said, "I will lead the personal guard battalion and the second water battalion to Jeju to see the opportunity, and I will come back in a month or two at the least, or three or four months at most......

If it weren't for the Jeju incident, Lin Bin's plan was to strengthen the Shengsi defense line, use Dahengdao as a base, infiltrate to the south, and compete with the luxury family for Daisan and Changguo.

Nowadays, with the Qianjiang River as the line, the Shengsi defense line in Chongzhou and the defense line in northern Zhejiang in Dongyuan, the Huizhou defense line in Jiangdong County, and the Jiangxi County side jointly bear the pressure of luxury household soldiers. In comparison, the Jiangxi direction is the weakest, and it is likely to break through to the luxury family first, and Lin Jian wants to use troops in Shengsi to contain the soldiers and horses of the luxury family, so that they can't take care of each other.

Now it seems that the Shengsi defense line is going to slow down, and it is always necessary to take care of the Jeju side first.

"Adjust the mountain battalion, and then transfer the five battalions from the guard battalion to strengthen ......it," Qin Chengzu suggested.

The pro-guard battalion has only undergone large-scale expansion, and it has not fought a tough battle, and its combat effectiveness has not yet been tested; The Changshan Battalion led by Ao Canghai is the elite of the three major infantry brigades known as the Fengli Battalion and the Chongzhou Infantry Battalion. Lin Jian wanted to go to Jeju in person, and Qin Chengzu suggested that it would be safer to bring the Changshan camp with him.

"The tiger cubs have to go out alone to forage for food," Lin Jian said, "and the Changshan camp still stays in Chongzhou." ”

Xiapi fought hard, and the Changshan battalion suffered heavy casualties. The Changshan battalion has only been resting for more than two months after returning to Chongzhou, and many wounded soldiers have not returned to the army, the workers' battalion has been expanded, and there are many veterans and military attaches from the Changshan battalion and Fengli battalion, and Lin Jian does not want to transfer to the Changshan battalion for the time being.

"I'll accompany you to Jeju, who else will I take with you?" Qin Chengzu asked.

"Mr. Qin, you stay in Chongzhou," Lin Jian said, "This is a three-way army, Chongzhou is in the middle and coordination is the most important, Mr. Qin is not in Chongzhou, and I don't worry about going east to Jeju......"

Qin Chengzu didn't insist on anything, Lin Mengde was good at internal affairs, but he was not familiar with military affairs, so he was not enough to stay in Chongzhou.

The defense line of Huai and Shengsi seems to be calm at present, but Sun Zhuang in the north is an extremely unstable factor, and no one knows when something will change?

It is not difficult for Cao Ziang to hold the line of Shanyang and Siyang, but the 60,000 Ding Zhuang of the Gongjia battalion are mostly soldiers of the exile army, and it is really difficult to say whether Zhang Gou and Chen Yan will be stable.

The situation in Jeju could not be delayed any longer, and since the decision to send troops to Jeju was made, mobilization began quickly. Food, grass, armor, and ordnance were also prepared quickly, and the troops on the north and south lines had to be adjusted accordingly; in addition to some of the troops stationed in Shanyang, the main force of the Jinghai Third Water Battalion had to be transferred back to Chongzhou, and as long as the weather was suitable, troops would be dispatched before the end of the month.

In addition to Zhou Pu, Zhao Hu, Ge Cunxiong and other generals, Lin Jian specially transferred Lin Jingzhong from Jiangning, so that Sun Wenbing was in charge of Chongzhou's affairs in Jiangning, and asked Lin Jingzhong to go to Jeju with him.

In any case, Jeju will be strengthened in an all-round way.

It was no longer enough for Jeju to have only a military governor, and Lin Jian wanted to transfer Lin Jingzhong to Jeju to take charge of civil affairs and commercial affairs.