Su Jin pointed to the model and said: "You see, the moat around Linhuang Mansion is not artificially dug, but a natural river, and the river surface is more than five zhang, which is the first obstacle; The walls of the cold city are two feet high, although it is lower than the imperial city, but it must still be high with the general city, the same question is, what do we take to attack the city? Where does the ladder come from? Where did trebuchets come from? Did you hit the wall with your bare hands? ”

The generals talked about it, some said that they should climb into the city at night to join the inside and outside, some said that they should quickly search around to cut down trees to build ladders, and some said that they would dig tunnels to lead to the city, in short, they had their own whimsical strategies.

Su Jin dismissed them one by one: "Now both sides are watching each other's movements with wide eyes, there is no difference between night and day, and there is no chance to sneak into the city; It's too late to build a ladder, there are no craftsmen in the army, and the delay is too long, which is exactly what we shouldn't do at the moment, and digging tunnels is even more impossible, the ground is frozen hard as iron, and there is a moat in between, which is a more time-consuming and laborious method, and what you say will not work. ”

Jingtai saw that Su Jin seemed to be smiling when he said these words, and he didn't look anxious at all, and said suspiciously: "Does the big marshal already have a way?" Don't sell it. ”

Su Jin laughed and said: "General Jing's ability to observe words and emotions has improved a lot, and you can see this." ”

The generals were overjoyed and asked, "Dashuai really has a way?" Let's hear about it. ”

Su Jin put away his smile and said slowly: "I don't know if it will work, but it doesn't hurt to discuss it when you say it; How to cross the moat is the first problem, but I am 100% sure that I can solve it, and the solution is very simple, just collect a lot of grass. ”

"Messy grass? What's the solution? The crowd was confused.

Su Jin smiled slightly, turned his head and instructed the guard: "Bring a basin of water." ”

The soldiers hurriedly brought a basin of melted snow water, Su Jin grabbed a handful of hay that was placed on the tent floor and wrapped it into a ball, spread it on the water, and ordered the guards to take it out of the tent and put it in the snow; After about a quarter of an hour, the guards brought the copper basin in, but seeing that the water in the basin had turned into ice, all the straw was frozen together, Su Jin stepped on it and stood on the frozen ice grass in the basin with one foot, and the ice surface was not broken.

"See? A handful of withered grass can make the thin ice strong, just when we went to the south to investigate, we saw that the river froze an inch thick of thin ice, originally this weather should not only have such a thick ice, it can be seen that the defenders in the city must do their homework every day is to break the solid ice so that we can wade through the ice, but as long as we spread a thick layer of withered grass, with a floating rod to stop the boring drift away, overnight, the thin ice can also wade the river. ”

There was a thunderstorm in the tent, and the generals laughed and looked at each other, this kind of truth has daily experience, but no one can think of using it here, the principle is a bit like the principle of concrete, the cement is not firm enough, and the strength is doubled when wrapped in a few iron skeletons and then solidified.

"As for the method of siege, I want to try a new method, I dare not guarantee that it will work, but I want to try, originally it was a way to burn the city gate with fire, but in the morning, we all saw that the only city gate was piled up with mud bags, reaching the top of the city tower, and it was still being reinforced, so it can be seen that the city gate is already the strongest defensive place, but it is not as easy to attack as other places."

The crowd nodded, for they also saw a dense crowd of men carrying mud bags to block the city gates.

"I don't know if you have noticed, the color of the city wall in the southeast corner seems to be different from other places, everywhere else is gray and black, and there are dead vines and small trees growing in the soil cracks of the city wall, which means that it is an old city wall, built with rammed earth and clay, don't look mottled and ugly, but the longer the time, the more solidified and solid such a city wall is, and the appearance may have peeled off a lot, and the inside is definitely as solid as a rock; The southeast corner of the city wall is grayish white, which is the color of the newly rammed Sanhe soil, it can be seen that this section of the city wall has collapsed for some reason, and we don't care about the reason, here we should be able to try my new method. ”

The generals craned their necks and asked, "What way?" ”

Su Jin said: "Thermal expansion and cold contraction. ”

The crowd was full of black lines, and they didn't know what to do.

"No matter how well the old and new walls are built, they are not as integrated as they were when they were built at the same time, this method may open a gap, and I will take the eight thousand barrels of fire oil with me anyway, I am afraid that it will come in handy, and we will test it again."

Su Jin opened the withered grass in the tent, found a fist-sized stone in the ground, and ordered someone to burn it on the oil basin until it was red, and then Su Jin personally scooped a scoop of ice water and poured it on the stone, and the white gas rose with a stabbing sound, and then Su Jin knocked lightly with the handle of the knife, and with a click, the stone shattered into several pieces, like an ordinary mud ball.

The generals watched all this with their eyes, but they didn't know what trick Su Jin was playing.

"Excessive heat, and then invaded by cold water, hard stones can easily be torn apart, I don't know if the city wall can be like this, but I want to try, General Pan, immediately make dozens of water hoses for backup, and collect dead wood roots and other fire-causing things, as well as a large amount of dead grass, let the river freeze tonight, and we will burn the city wall early tomorrow morning; If it succeeds, we may spend the night in the warmth of Seoul tomorrow night, but if not, we need to flee for our lives, and I don't want you to be here. Su Jin smiled.

Everyone witnessed the shattering of the stone, but they still doubted such a method, but the military order was like a mountain, and the marshal ordered that it should be vigorous and resolute, Pan Jiang immediately took people to prepare for things, and the soldiers of the Song Army braved the wind and snow to pick up wood and grass in the ice and snow, and they were very busy, and the Liao army at the head of the city laughed and fell, and they laughed and scolded: "Freeze to death you bunch of rabbit cubs, see how long you can last?" ”

After dark, more than 1,000 Song soldiers rowed dozens of simple bamboo rafts down the Huangshui River, and the Liao army defending the city heard the movement and shot arrows indiscriminately on the river, but the Song army did not fight back, only under the cover of the shield, the grass curtain woven into a grid was spread on the river surface, and tossed back and forth for half a night.

The Liao army at the head of the city didn't know what the Song army was doing, so they only shot arrows down one by one, killing hundreds of Song soldiers.

In the second half of the night, the hail and snowflakes fell wildly, and the defenders saw that the Song army was not moving, so they braved the severe cold and sent more than a dozen people to the city to check the river, but they were shot and killed by the Song army in ambush on the other side of the river.

After dawn, Su Jin came to the river early, but saw that the river was white and snowy, and the snow covered the river surface tightly.

Su Jin held the shield and went down to the river to step on it to test the strength, and there was a burst of cracking sound when he went up to Kerala with one foot, and Ma Han next to him hurriedly wanted to pull Su Jin up, but Su Jin stepped on the other foot, but saw that although there were cracks on the ice, it was not broken, and the tension of the grass mat could completely bear the weight of people, the only problem was that I was afraid that I couldn't stand up to many people at the same time, but this was enough.

The Song army launched an attack in Chenshi, they did not charge, just suppressed the defenders of the city with bows and arrows, and did not care about the head, because there was no enemy tower on the city, the Liao people did not dare to show their heads easily, but in the interval between the Song army's archery with bows and arrows to counterattack, in comparison, the effect of condescending archery was much better, and the Song people had more casualties than the Liao army at the head of the city, but the Song people didn't seem to care about this, one person took a shield to cover it, and one person shot at the head of the city, and was busy.

Yelu Kanrong had already come to the head of Seoul to check the situation, and for the stupid behavior of the Song people, he understood that the Song people's brains were in water, and they were not stupid enough archers. Forced, those soldiers carried large firewood, and the behavior of stepping on ice with large wooden barrels was even more stupid. It was very forced, and all kinds of strange actions made Yelu Kanrong have no time to investigate why the Song people were able to cross the river on thin ice.

"Shoot, shoot, shoot these idiots." Jerukanrong shouted.

Bows and arrows rained down, and the Song army on the river also had countermeasures, they tied their shields to the top of their heads with straw ropes in pairs, and ran to the root of the city wall with wooden barrels or firewood cranes, many people were still shot and fell, and some people stepped through the ice and fell into the icy river, and after a while, they were frozen hard, but they were still carrying things back and forth like ants.

Su Jin's heart tugged, it seems that there will be at least thousands of casualties today, if the method does not work, it will be a big loss.

An hour later, more than 30 steps at the junction of the old and new city walls piled up more than a dozen piles of mountain-sized firewood, the Song soldiers poured all the pale yellow liquid in the barrel on the firewood, and suddenly lit a fire, only a while, the lower part of this city wall was engulfed by the flames, the beeping flames soared up to a height of a few feet, and the defenders at the head of the city could not stand on it, and scattered to both sides.

"Damn, what kind of fame, what kind of brains are these Song pigs? I've seen a siege, I've never seen such an attack, and it's used to burn a bird. Yelu Kanrong scolded with a smile, stood on the side and watched the excitement, and looked at what tricks the Song people played.