The late night of the Suguo Mansion is also brightly lit.

When Xie Zhiyun came out of Ronghua Hall, he found that it was already a child, and the dark clouds in the sky obscured the bright moon and stars, and it was dark between heaven and earth.

It's going to snow again.

Xie Zhiyun wrapped his cloak tightly and walked back to the Spring Garden.

Chaoyu and Mu Yun were busy with her for more than half a month, but Xie Zhiyun didn't let them wait in Ronghua Hall, and let them come back directly to rest.

When you arrive at the Spring Garden, it is warm inside.

Xie Zhiyun took off his head, only to find that the cloak had a lot of dust on it, and it looked a little dirty.

Now she doesn't really care too much.

When she washed and changed her clothes and sat in the bedroom, Chao Yu said, "Miss, go to bed early today, you have worked too hard these times." ”

Xie Zhiyun shook his head.

She took out the letter written to her by the halberd from the box, and read it again and again.

The war at the border pass was busy, and the garrison had to lead the troops outside, so he had only written two letters in the past month, each letter was very short, and it was only a midnight letterhead, which Xie Zhiyun had read several times.

Chaoyu saw that she wanted to read her uncle's letter again, sighed slightly in her heart, took ginseng tea and gave it to Xie Zhiyun, asked her to replenish her qi and blood, and then withdrew.

Today, the family discussed for two hours, and they didn't come up with an approximation, everyone was a little anxious, but no one said anything.

It is true that North Vietnam did not directly attack the remaining seven states, but it is not easy for the seven states to directly participate in this siege, because once they also follow along, first, there will be no way to guarantee the supply of border passes, and second, they are afraid that North Vietnam will completely tear their faces and increase their forces to start a full-scale war.

At that time, the people who live outside the city will suffer.

So Yezhou is still supported alone.

All the preparations they can do have been done, and all the efforts they can have been exhausted, Xie Zhiyun has been busy for more than half a month, and the whole person is tired and numb, her brain can't turn, and she can't think of a better way for the time being.

Even so, Xie Zhiyun did not write anxiety on his face.

She sat for a while and suddenly noticed that it was snowing outside.

Crystal snowflakes fluttered down, bringing with them bursts of cold.

Xie Zhiyun sighed, she unfolded the guard halberd's family letter, and slowly read it word by word.

In his heart, the guard said about the battle at the border pass, his own situation, and also said that she should take care of her body and not worry too much about herself.

Unlike the letter that Wei Ji wrote to her when she went to Taiji Mountain before, this book is very formal, very trivial, and very ordinary.

There is no peach blossom in full bloom, no ambiguous lingering of food, clothing, housing and transportation, only a few words of war, only the sincerity that makes her feel at ease.

Xie Zhiyun gently rubbed the paper, hooked his lips and smiled.

She missed the halberd very much, not because she wanted to rely on him, but because she hadn't seen him for more than a month, she wanted to talk to him from the bottom of her heart.

Xie Zhiyun suddenly remembered that he went to Taiji Mountain to train the army before, and when he came back, he said that the socks she made were very good, because she made a lot, so even if they were wet and dirty, they could be replaced.

At that time, Xie Zhiyun also said to him: "If you wear wet socks in winter, won't you freeze into ice lumps, it will be difficult to walk." ”

Thinking of this, Xie Zhiyun's eyes suddenly lit up.

She hurriedly stood up, went to the bookshelf and rummaged through one book after another, and finally found the answer she wanted.

In the evening of the next day, a new round of siege ended.

The walls were devastated, and there were traces of blood that had not yet been wiped off.

Xie Zhiyun took the people of the Wei clan to the city tower and looked at Zhou Chenglin: "Old general, I have thought of a method, but I don't know if it is really useful." ”

Zhou Chenglin's eyes lit up and said, "Young lady, tell me about it." ”

Xie Zhiyun handed him the "General History" in his hand, turned to one of the pages, and said: "This is the history book of the former Zhao period, recording the war between the former Zhao and the Later Jin at that time, among which the city defense methods of Tianjiang City are still fresh in my memory. ”

"Last night I rummaged through the book and finally pulled it out, and I think this method works."

"But Yezhou is not as cold as Tianjiang City, and I was worried that it would fail, so I thought of another way."

She explained the method carefully, and then said, "If it can be done, we need to spend more firewood and coal, and then we need to block the city gates so that they cannot enter through them." ”

"The others can only do their best and know the destiny of heaven."

Zhou Chenglin didn't know a few words, but he could understand the reason, so he asked: "Young lady, we can give it a try, at most it will take a day's firewood." ”

"If it can be done, it will last for a few days, if it can't be done," Zhou Chenglin's eyes narrowed, "We will stalemate with them." ”

"I can always wait for the day when the frontier war is won."

Xie Zhiyun nodded and said, "Okay." ”

In the evening, several cauldrons were erected at the south gate.

The strong laborers of the city sent out hundreds, some of them carrying water to the walls, some of them burning wood, and some of them carrying boiling water to the walls and pouring them on the walls from the top down.

The hot water was hot, but the weather was very cold, and the water vapor poured on the city wall quickly evaporated, and after a while, some of them were about to freeze.

Xie Zhiyun, Wei Ningshu and Ji Xiuxiu had been observing the city wall, and when they saw that it was indeed effective, they had all the city walls poured with boiling water.

When the ice began to condense on the wall, he changed the cold water and continued to pour it.

And so it was, from night to dawn, and when the first rays of sunlight appeared in the sky, the entire southern gate was wrapped behind a wall of crystalline ice.

When the North Vietnamese soldiers came under the city walls, everyone was stunned.

The ice wall exudes coldness, which makes people afraid to approach, and it happens that it is a cloudy day today, and the sun is not enough, so the ice on the wall is very solid.

Ladders and ropes were unusable, because the ice was shiny and there was no fulcrum, which made them confused.

The worst thing is that it is a cold winter moon at the moment, and the weather is extremely cold, so that the soldiers can climb on such ice is tantamount to torture.

Soldiers, you look at me, I look at you, and they all flinch a little.

Immediately, some soldiers returned to the camp to report, and the deputy general quickly reported to Liu Bai.

This time, Liu Bai, the chief general of the North Vietnamese Army, was originally under the command of Jin Wuwei, and now he is the vanguard general, commanding 100,000 soldiers and horses.

He thought that more than double the force would soon be able to capture Yezhou, but he didn't expect that in the past nearly twenty days, they hadn't even flown a single mosquito into Yezhou, let alone people.

The urgent report of the imperial court passed day by day, and Liu Bai had no choice but to sell miserably and beg for another 30,000 people.

If he can't capture Yezhou on this day, he doesn't have to go back.

Hearing the adjutant general's report at this moment, how could he agree to retreat?

Liu Bai looked at the deputy general gloomily and said sharply: "Attack directly, whoever dares to retreat, don't care if you kill directly." ”

"If you don't conquer it, you don't have to come back alive."