If one looks closely at the enlarged satellite map, one will find a phenomenon - that is, the area with developed agriculture is generally full of ditches and ditches, and it is very regular.

Those rivers cut the areas where agriculture was developed into small squares, which were very neat. To put it in one word, it's "gridding".

In East Friesland, under the leadership of Marin, a large amount of labor is used to dig irrigation rivers during the slack season, and the ditches have been initially "gridded". So, agriculture in East Friesland is now very developed.

However, this is difficult to replicate. It is not without that the merchants of other vassal states have discovered the secret of many irrigation rivers dug up in East Friesland. It's just that it's useless to find out......

You must know that the excavation of irrigation rivers is a very huge project, and it is generally necessary to organize thousands or even tens of thousands of strong men to participate in it. The large number of people is nothing, but the food consumption when digging the river is several times that of usual, and the problem is very big......

Now that food is so expensive in Europe, even if the strong men who dig rivers don't need to be paid, the consumption of that grain is really painful. For example, if a strong man usually doesn't work much, it is enough to eat more than one pound of food a day, and if he eats more than two pounds, he will have a big stomach, because the consumption is not large.

But when it comes to such an occasion as digging a river, the amount of food eaten by those strong men will skyrocket. The average strong man can eat more than 3 pounds of food, which consumes a lot. In this way, 10,000 strong men, when digging the river, consume more than 30,000 pounds of food every day. If it is converted into rye, it will cost 30,000 fennig, which is equivalent to 500 gold coins! If you dig for a month, but the food is consumed, it will cost 15,000 gold coins...... That's an exaggeration......

Of course, the food for the farmers who dig the river cannot be whole wheat. In the case of ordinary nobles, it may be mixed with a lot of soil, wild vegetables, wood chips and even stones...... When you eat a stone, you can knock out your teeth...... That kind of bread, because there is too much mud, is very hard, and it can be used as a brick to smash people......

The bread given by Marin was better and soft, but it was also mixed with about 30% of the bran of ryegrass. At the beginning, the reason why Kohler strongly demanded the promotion of this "Kohler bread" mixed with grass bran was because he was distressed by the huge consumption of food. If 30% of every strong man's daily food is 30% of his or her bran, then he can save 0.9 pounds of rye. If you have 10,000 strong men, you can save 9,000 pounds of rye a day, which is 9,000 fennig or 150 gold coins...... That's why Marin would agree with Kohler's use of this kind of bread that is a bit lacking.

However, then again, this kind of "Kohler bread" mixed with three-percent grass bran is already considered conscience food for the poor. After all, it doesn't gruckle and is easy to digest. Moreover, coarse grains are also nutritious, at least much better than mixed with soil and stones......

Although those black-hearted nobles mixed a lot of messy things in bread, they could save a lot of food. However, no matter what, it took a month to organize tens of thousands of people to dig the river, and the cost of food invested was also worth thousands of gold coins.

But the problem is that most of the German aristocracy cannot afford such consumption. After all, most of the nobles are in debt, where is the money to organize strong men to dig rivers on a large scale?

Marin is different, because he has mastered the secret of high grain yield, Marin has a very sufficient amount of food, which is open to eat when the strong men dig the river. As a result, the construction of water conservancy in East Friesland went very well. Now, in the three regions of Oldenburg, Schleswig and North Münster, many rivers have been dug for irrigation. Even if other nobles want to imitate, they must have the financial resources and courage.

Due to the tight schedule, spring ploughing in the Duchy of Peking University will only be prioritized in East Friesland, Oldenburg, Schleswig and North Münster from March. As for the newly added provinces of West Friesland, Bremen and Jutland, as well as the province of South Münster, which was not under Marin's control, Marin had to give up for the time being and let it continue according to the old extensive farming methods. It is not necessary for these places to have high grain yields, as long as they do not need Marin's help.

……

Just as Marlin was busy with spring ploughing, news suddenly came from England that Henry VII was planning to send troops north to reoccupy the northern counties. Even the military barracks were built, and food and supplies began to gather. When the spring ploughing is over, and the people can be drawn to accompany the army, Henry VII will immediately move north to reoccupy the north......

The information came from the Countess of Salisbury, Edward's sister, Lord Margaret. Previously, Lord Margaret had not found out about this situation. After all, Henry VII had not prepared before, but only discussed it with a few important ministers.

In fact, Margaret's husband, Richard. Sir Bol, as a close confidant of Henry VII, knew the plan to send troops. It's a pity that Richard. Pol and his wife Margaret are not of the same mind, and they are also guarding against their own wife. Therefore, the Margaret lord was unaware of Henry VII's plan to send troops to the north.

However, after the beginning of spring, Henry VII began to gather soldiers, horses, grain and grass, and the movement was too great to hide it. Sensing something unusual, Lord Margaret sent someone to investigate, and at great expense, finally learned of the news of Henry VII's upcoming northern expedition.

According to Henry VII's plan, the British army would send 15,000 troops north, bypassing the central counties of Derbyshire, Nottingham, Leicestershire and Lincolnshire, which were disrupted by thieves and refugees, and going north directly from the counties west of England, so as not to delay the fighters.

As for the place where the army was assembled, it was Warwickshire, southwest of Leicestershire. Ironically, Warwickshire was by law supposed to be a fief of Edward, Earl of Warwick......

And that Edward, Earl of Warwick, is now preparing to kill Henry VII......

Henry VII imprisoned Edward for more than ten years, and naturally deprived Edward of his fiefdom and sent his own cronies to take over. Thus, although Warwickshire was Edward's fiefdom, it was now Henry VII's territory and the location of the rear camp of Henry VII's army as it marched north.

Although because of spring ploughing, the English soldiers and the people could not be mobilized. However, Henry VII still mobilized a group of non-peasant men (such as sheep herders) and began to build camps in Warwickshire and transport grain and grass.

When the spring ploughing is over, those British soldiers and people who have been recruited from all over the country can live directly in the well-trained camp, and the food can also be directly prepared by Henry VII.

According to Lord Margaret's estimate, by the end of March, the Warwickshire camp would be in order. In addition, according to secret intelligence, the grain and grass needed by the British army will basically be in place at the end of March, waiting for the British army to come and use it.

Lord Margaret knew that the Robin Hood Thieves were related to Marin, and that Marin and Edward's armies would also attack in early May. However, in order to make Edward's military campaign more successful, Lord Margaret thought that Robin Hood should send a group of thieves to attack the British camp in Warwickshire and burn the grain and grass before the British army assembled. Moreover, the best time is late April, on the eve of the build-up of British troops.

As a result, the British army had to reraise food and grass, and the military operation would be greatly delayed. Edward's army, however, would move south as scheduled. One is well prepared, the other is poor, and the fool knows who will win......

Marin was surprised by Margaret's intelligence, and of course, what surprised him even more was Margaret's suggestion - this is clearly a capable female politician! actually knew that destroying the grain and grass prepared by Henry VII was the vision of ancient Chinese strategists......

The Robin Hood Thieves now has an estimated seven or eight thousand full members, all of whom are young and strong men. Moreover, there is a horse team of 900 people. If it was just to burn the grain and grass before the British army assembled, it was best to send out the 900-strong horse team......

Therefore, Marlin gave an affirmative answer to Margaret's suggestion, and sent someone to give an order to the Robin Hood thieves to begin exploring the road and prepare for the British camp in Warwickshire, Benxi. At the same time, Marin will give them the oil drums they need to burn the grain and grass - pour the oil on the grain and grass to burn faster......

It's just that, through this suggestion, Marlin is even more jealous of Lord Margaret. It is certain that in the future, when Edward comes to power, the Lord Margaret, Edward's own sister, will become a superstar in the English court. This does not bode well for Marin to take control of England in the future. Therefore, Marlin had murderous intentions towards Margaret, a clever woman......

Of course, Marin would not have sent someone to assassinate Lord Margaret himself. In fact, all he had to do was send someone to tell Henry VII what Lord Margaret had done, and Henry VII would definitely cut her off. Not to mention anything else, as long as Henry VII knew that Edward was sent by the Margaret County Lord to replace him, he would definitely be extremely angry, and it is estimated that the idea of crushing the Margaret County Lord would be ......