Chapter 201: Gathering Sand into a Wall

"What Lord Xu said is very true," Feng Li turned to Li Jiancheng and said, "Your Royal Highness the Prince, these two plans are feasible. ”

Li Jiancheng nodded, summoned twelve people, each took a gold-painted token, and sent them all out. The twelve golden orders not only reflected urgency, but also prevented the messenger from being captured by the enemy. After doing this, Li Jiancheng found another tall person, Xu Qing looked at it, and it was about the same size as Zhenzhu Khan. And Xu Qing happened to have a few sets of grassland costumes, although they were not as luxurious as the Pearl Khan, but now the "Pearl Khan" is already a captive, which is understandable.

After doing these two things, Li Jiancheng looked at Xu Qingdao and said: "You two methods, but you haven't found the city wall to block Xue Yantuo's cavalry, if you can't think of that, Lone will still kill you." ”

Xu Qing wiped the sweat from his forehead, grabbed a handful of sand on the ground and said, "The city wall that His Royal Highness the Crown Prince wants is here!" ”

"Sand?" Everyone looked at Xu Qing with a puzzled expression.

Xu Qing sprinkled a handful of sand and said, "That's right, what else is there in the vast grassland besides sand?" ”

"But how does this sand build a wall?" The crowd asked again: "Lord Xu, is it a small slope made of sand?" Alas, this method is not bad, but the effect of blocking the cavalry is very poor. ”

Xu Qing smiled and said, "Everyone, this sand pile, the project is too huge, and it will definitely not be completed in one day." However, I have a way to gather sand into a wall. ”

"How to make a wall of sand?"

After everyone asked, they lowered their heads and thought about it, and Li Jiancheng also stared at Xu Qing.

Xu Qing lowered his head and shook a handful of sand and said, "Everyone, please see, this sand is not pure sand grains, but half sand and half soil. If there is soil in it, then there is a certain stickiness, and we can make it into blocks. ”

When Xie Shufang heard this, he seemed to think of what Xu Qing's method was, but it was still separated by a layer of gauze, and his heart itched, and he said hurriedly: "Lord Xu, although this is half sand and half soil, it is still not sticky enough, at most one foot, you can't go up." A one-foot wall that horses can cross directly. ”

Xu Qing smiled and said, "Of course I know, on this grassland, in addition to sand, isn't there snow water?" Okay, okay, the military situation is urgent, I won't sell it. My solution is to use this sand to pile up blocks and build a wall. Burn a fire, melt some of the snow, and pour it on top of the clods of sand, and because of the cold weather, the water must freeze back into ice, and the sand will be frozen. ”

After Xu Qing finished speaking, everyone present was overjoyed, and even a little excited that they couldn't speak, and said intermittently: "Xu, Lord Xu, what a genius!" Li Jiancheng also breathed a sigh of relief at this time, and said to the rest of the generals: "What are you still doing in a daze, not doing things?" ”

"Whoa!" The generals departed one after another to find their soldiers. They got together again to discuss how wide the walls should be, and then they started moving. At this time, Li Jiancheng smiled at Xu Qing and said, "Okay, yes, the governor of Gaolan is yours." But your life cannot be returned to you, but it is still in the hands of the widow. ”

What else can Xu Qing do, the thunder, rain and dew are all Jun's grace, so he had to give up his hand and say: "Ministers thank the prince." ”

Li Jiancheng laughed and waved Xu Qing to instruct the generals to build the city wall. Xu Qing looked at the fiery scene of snow clearing and digging sand, walked up to Uncle Xie and said, "General Xie, the sand and soil dug can be taken from the outside of the city wall, so that a moat can be dug outside the city wall by the way, and the terrain inside can be reduced." ”

Uncle Xie patted his head and said, "General Xu is right, the last general will go and order." After speaking, Xie Shufang walked up to the soldiers and horses of his headquarters and drank: "You stupid people who come without heads, fools, what are you digging in there!" Go! Dig outside the wall. ”

But where was Uncle Xie scolding his subordinates, I saw him cross his waist and look around at Feng Li and the others and shouted: "Haha, you don't know, digging outside the wall can dig a moat by the way, and it won't hurt the terrain inside!" ”

Feng Li listened, and drove his subordinates to dig outside the wall. 10,000 people, a wall 300 long and wide is enough. Xu Qing took three hundred and seventy or eighty steps, and asked the generals to build according to this length. As for the thickness, Xu Qing asked everyone to build a lot wider in order to ensure this frozen city wall. In this way, it was possible not only to resist the attack of cavalry, but also to stand on the walls and counterattack the enemy.

The progress is much slower than expected. Because the daytime temperature is not too low, it is slower to refreeze after the water melts at minus a few degrees Celsius. Spread an inch of sand and wait a few minutes for watering in place. In the evening, the one-foot-high walls were built, and the thickness was only half of what had been predicted.

What else can I think of to speed things up?

Xu Qing turned around on the "construction site" again, and turned to Feng Li's city wall, and Xu Qing found a problem. When the soldiers melted the snow, they melted all the snow into water and poured it on the city wall. The ice-water mixture is zero degrees Celsius, and it melts completely, although it is only a few degrees, but it takes a long time to recrystallize.

Xu Qing found Feng Li and said: "General Feng, don't melt all this snow water, as long as it can barely penetrate into the sand, please ask your subordinates to melt about sixty percent." ”

When melted snow falls to the ground, it will scatter other snow crystals, seeping into the sand and quickly re-condensing. At this time, Feng Li is face smiled, and suddenly raised his face and shouted at his subordinates: "Why are you stupid like this, ah! Is it okay to melt the snow to 70 percent? ”

He also followed Uncle Xie's example, crossed his waist and looked around and drank: "Melting to the sixth level, it can freeze the city wall, and it can also save firewood!" ”

Seeing this, Xu Qing couldn't help but be relieved, although these people were on this battlefield, they could still maintain this optimistic attitude and enjoy their suffering. Morale is available! In addition, Xu Qing also realized that the problem of firewood seemed to be really a big problem, if there was no firewood, the snow would not be able to melt. But seeing that each soldier was hung with two bags full of dry food, one on the left for dry food, one on the right for charcoal, and charcoal specially brought by the auxiliaries, it was estimated that after the city wall was built, it would be used for a day or two.

At this time, Xu Qing also found that there was an army that was not moving from beginning to end, about 3,000 people, sitting in place with a cold expression.

With Xu Qing's method, coupled with the fact that the sky is getting darker, the temperature has dropped a lot, and the speed of building the city wall is getting faster and faster. But at this moment, a scout flew in the distance, and hurriedly ran to Li Jiancheng's side and said, "His Royal Highness the Prince, Xue, Xue Yantuo are already ten miles away!" ”

"What? How did it come so quickly! ”