The work of cement, which is difficult to say and easy to say, can only be pondered by these half-baked chemists.

Looking at the muddy condition on the ground, Edward frowned slightly, and then immediately a smile on his face, kindly walked up to a bald chemist, lifted his lowered head, and asked:

"Academician Abt, may I ask, I don't know what is the progress of researching this cement?"

Academician Abt had a Mediterranean head, a big red nose, and looked less like a scientist than a blacksmith.

Edward's nose twitched, and he could still smell a smell of sulfur, which at first guessed was transferred from gunpowder.

"Your Majesty, please forgive us for our dereliction of duty!" Although he was helped up by His Majesty the King, Academician Abt still lowered his head, his cheeks were slightly red, and he said with some embarrassment.

"Despite our efforts, we ask for your forgiveness for our dereliction of duty! The task of cement, so far, still has not found the right formula, can not achieve the effect you require! ”

At this time, not only him, but even the other academicians in charge of this matter also lowered their heads one after another, their faces full of embarrassment.

In two years, His Majesty the King gave the materials and general directions, and it was indeed a shame that they had not made a complete breakthrough in two years of research.

"Academicians......" "But, my majesty, we have made some sudden progress!"

Edward raised his hand, and was about to comfort these chemists who had worked hard for many years, but who knew that they suddenly came up with such a sentence, which made Edward feel a sense of surprise in his heart.

Don't?

"After repeated tests, we finally found that if the bricks and tiles are crushed into sand, or clay, mixed with lime and a small amount of gypsum, and then calcined, something similar to cement can be obtained!"

As he spoke, Academician Abt half-bent over and led the way in front, but after a while, he came to a gray-black wall, chest-high, about two meters long and wide.

At first glance, Edward felt familiar.

He walked briskly, kicked him a few times, and the wall was as steady as Mount Tai, leaving only a few footprints.

The scholars on the side watched in amazement at the king's rude behavior, and their minds were full of disbelief.

"This, is there any disadvantage to this cement?" Edward was also a little embarrassed at this time, glanced at the cement wall in front of him, and began to change the subject.

"We experimentally found that this cement often does not solidify, we fired one stone (112 pounds, 50.8 pounds) of cement, but it was only about ten pounds to achieve the requirements, and the others were completely unqualified!

However, such a wall can withstand the impact of dozens of people, and it is safe and sound, stronger than a castle! ”

Speaking of this, everyone's faces were full of regret, and the ratio of eleven to one was indeed a failure.

For chemists like them, failure to meet the conditions is of course a failure.

But Edward didn't think so, even if he spent more money, in a tense situation.

"How much does it cost to produce one stone of cement?"

At this point, Edward began to care about the cost.

"This, because clay and lime are inexpensive and the materials are readily available, so you only need one shilling per stone of cement!"

Afterwards, Academician Abt glanced at the king and said in a slur manner.

Edward didn't care so much, and began to calculate silently in his heart.

The 10-meter-long and three-meter-high courtyard wall built at home used 10 bales of cement, and if each bale was 50 kilograms, then one ton of cement was used.

And in this case, it costs twenty shillings, less than a pound, which is cheap.

For the sake of today, there is no better way, so let's use it!

After coming to the conclusion that it was cheap, Edward put a smile on his face again.

"If this is true, Academician Abt, and fellow Academicians, you will each be rewarded with a hundred pounds!"

Looking at the team of nine people in front of him, and their dirty clothes, Edward announced loudly.

"Long live, long live my king!" "Thank God!" ……

And just two days ago, facing Rennes, the capital of Brittany, the Marquess of Edinburgh was full of ideas.

As the capital of Brittany, Rennes is naturally a tall and sturdy city, which is difficult to conquer.

Moreover, the Marquis of Edinburgh also heard that there were more than 1,000 soldiers and a large number of civilians in the city, which made the British army, which was only 3,000 men, not know how to start.

Although the Celts inside did not come out, it was difficult for the British troops outside the city to enter, and for a while, it entered a stalemate.

So, two days ago, the British army was still outside the city.

And the reason why Rennes was breached was because the British artillery came.

Speaking of cannons, the first thing is the bronze cannon, which is the so-called bronze cannon.

This cannon, which was huge, extremely heavy, and had a wide muzzle, was brilliant during the Hundred Years' War between Britain and France.

How to say it, this cannon has always fired stone projectiles in the West, similar to our catapults, but it requires a lot of gunpowder to fire.

It wasn't until around 1450, more than 100 years ago, that iron bullets began to be fired.

In this era, there is a good place in Britain - Sussex, since the iron cannon technology was transmitted to Britain, Sussex's iron-making technology is among the best in Europe.

Therefore, after Edward passed on some of his shallow knowledge to the military factory, especially the teaching of clay sculpture technology, the iron cannon was mass-produced.

Although the iron cannon has no long range and is easy to blow up, it is cheap!

Especially since the long-barreled cannon is still only a small-scale construction, and the cannon is still an important factor in determining the outcome of the battle.

This time, 3,000 British troops, with twelve iron cannons weighing 1,000 pounds, came to Brittany without hesitation.

Due to the heavy artillery and the difficulty of walking, it still arrived two or three days later than the large army.

As soon as the cannon arrived, the Marquess of Edinburgh immediately swept away his sorrows, and his whole body was full of energy.

Twelve cannons were neatly placed in front of Rennes City, and the muzzles of the black holes were facing the Rennes city wall at a forty-five degree angle, which looked extremely terrifying.

Although there are also a few cannons on the city of Rennes, God knows if it can still be used, from the Hundred Years War to the present, the city of Rennes has never experienced a war again.

The soldiers on the city wall, looking at the bloody cannons one by one, their faces turned gray with fright, and their bodies shook uncontrollably.

"Hey, hey! Let you not surrender, let you taste the artillery! ”

Looking at the standing city of Rennes, which still stubbornly closed the city gates, the Marquis of Edinburgh suddenly laughed.

"Shoot me and blast the city of Rennes—"

Staring at the city of Rennes, the Marquis of Edinburgh suddenly took a breath, his eyes widened, and he shouted hoarsely.

Suddenly, the artillery, which had already been prepared, ignited the gunpowder.

In an instant, twelve huge stones flew directly forward in a parabolic manner.