The cave wasn't very deep, and the cave entrance was very large as well. There weren't many people living inside. In addition to the insufficient quilts, many of the wounded died from the cold.

Yun Ruo Lu arranged for people to take good care of the wounded. She then took a knife and a dagger that were as sharp as mud, and led them up the mountain.

To climb the mountain, one needed to climb cliffs and cliffs, and with the cover of snow, it was even more difficult to climb.

There were a lot of big trees on the mountain that were being crushed by the snow. Yun Ruo climbed up first and then made a slipway to slide the fallen trees down to the bottom of the mountain.

The people she brought were caught below. After making about four or five trees, Yun Ruo did not continue.

All the soldiers thought that Yun Ruo Lu had made these trees for the fire to keep warm, but Yun Ruo Lu split them into pieces of wood and nailed them into a large wooden box with nails.

The wooden boxes didn't have a lid or a bottom, only a square frame embedded in the sides. Dozens of these boxes were made, each about a meter in size.

It took them more than two hours to finish all the boxes.

Ke Yunjin brought her people over to help carry the things, but when she saw the strange wooden boxes, she could not help but ask in puzzlement, "What is the Empress making? This kind of box cannot be used as a weapon, nor can it be used as a weapon.

Yun Ruo gave a smile but didn't explain. She said confidently, "Your master is going to melt some snow water. He'll know what it's used for soon."

Yun Ruo Lu took a wooden box and placed it on a flat piece of ground. She placed the snow inside until it was slowly added, then poured some water inside.

Moments later, Yun Ruo took down the wooden box, and the loose snow turned into a large block of ice!

"Did you see that!?" This kind of ice can be used to make ice house, very cold protection. "Do what I did just now, we need to make more of these ice cubes in a short period of time!"

The soldiers started to do the same after they had seen it once. In their opinion, an ice house would only make people feel colder, but they didn't know that the ice house's cold protection was especially good.

Roughly an hour later, more than a hundred pieces of ice were made.

Yun Ruo You took the ice and made a door for the wounded in the cave to block the wind. Then she made a big ice house, one ice house was enough for hundreds of people to sit and rest inside.

After the first ice house was built, more people joined in. In just half a day, there were already more than ten such ice houses in the canyon.

Yuchi Chen stared dumbfoundedly at the ice houses piled up one by one. In his heart, he was truly impressed by Yun Ruo Lu.

After finishing her work, Yun Ruo gave Yuchi Chen and herself a small ice house. Not only could they rest, they could even discuss military matters inside.

Everyone in the military camp was praising Yun Ruo's wit and respect for her.

Not only that, but Yun Ruo Lu had also built a defensive wall at the exit of the canyon so that she wouldn't be afraid of being ambushed.

During the night, Yun Ruo Lu and Yuchi Chen spoke a lot of things, from their thoughts to everything that had happened.

After half a month, Yuchi Chen had lost a lot of weight, and he looked like he was exhausted.

"Yun'er, how did you come up with so many strange things? I never thought that this ice house would be so sturdy! "

Yuchi Chen knocked on the ice wall, still in a state of excitement.

"Actually, this snow can also be used to make many things, such as weapons."

Yun Ruo Lu reminded him. Upon hearing the weapon, Yuchi Chen's eyes lit up and she excitedly said, "Tell me about it!"

Yun Ruo Man took out an exquisite ice arrow from her sleeve and placed it in front of Yuchi Chen. "Prince, what do you think of this?"

Yuchi Chen picked up the ice arrow, which was only the size of a pinky, and asked doubtfully, "Such a small thing, can it kill people?"

The ice arrow looked crystal clear, and he didn't know what Yun Ruo Lu had done, but he felt that it was very magical.

Yun Ruo nodded her head and added, "This ice arrow doesn't seem to have much killing power, but it's filled with poison. Once it enters a person's body, it will immediately melt, and the person hit by this arrow will immediately die."

"What poison?" Is it really that powerful? "

Yuchi Chen asked incredulously, not understanding where the poison that Yun Ruo Lu had brought had come from.

Naturally, Yun Ruo Lu did not tell Yuchi Chen that the poison was given to her by the red calyx.

Before she left the capital, Red Calyx gave her a purple brocade box. Inside the embroidered box was only a bottle of medicine and a piece of paper. This method was something that Red Calyx had written down on the piece of paper to teach her.

"Whether he's powerful or not, we'll see tomorrow when we try!"

That night, Yun Ruo Man hadn't slept a wink, she had been forging ice arrows and shooting Ice Arrows.

When the next day arrived and the news of the enemy assault arrived, everyone in the camp became nervous.

Yun Ruo Lu and Yuchi Chen led two thousand men to meet the enemy. Because of the ice wall, the enemy's arrows were unable to pierce through.

In the areas where the ice intersected, there was a slit the size of a pinky. Yun Ruo Lu took advantage of the opening and used her spear to shoot out the ice arrows.

A series of loud bangs echoed throughout the valley as countless ice arrows rained down on the army.

All the enemies that were hit by the ice arrows fell to the ground.

This sneak attack only lasted for a little more than an hour, before the enemy was forced back.

Although a small victory was something worth celebrating, they were trapped in here for a long time, so they had no choice but to take the initiative and flee the valley.

After returning to the military camp, Yuchi Chen summoned all the generals to discuss the matter. What Yuchi Chen meant was, when the enemy was in a state of confusion, to attack and then regroup with the Third Marquis' army.

In Yun Ruo Lu's opinion, there was no problem in sending them out. However, the fact that the reinforcements had yet to arrive meant that Yuchi Xuan didn't want to send troops to help them, so he couldn't rely on Yuchi Xuan for support.

Hearing Yuchi Chen and Yun Ruo Lu's explanations, everyone fell silent.

What they said made sense. However, if they didn't have the support of Yuchi Xuan's army, they probably wouldn't be able to hold on much longer, even if they did fight.

Yun Ruo thought about it for a long time, and said with difficulty: "I'll escape first, then I'll go find the Third Marquis and send out the troops! We will work together to counterattack the siege! "

She had come up with this idea before coming here. However, she was worried that Yuchi Chen wouldn't agree, so she didn't say anything.

After Yun Ruo said this, everyone turned to look at Yuchi Chen, waiting for his opinion.

Yuchi Chen knew that as long as Yunluo went to find Yuchi Xuan, Yuchi Xuan would definitely send out his troops. But if Yun Ruo went, what would others think of him in the future? Where would he put his face?

Thinking up to this point, Yuchi Chen replied firmly, "No!"

"But we have no other choice! There are so many wounded people outside and we don't have any food left. Are you just going to patiently watch your soldiers die one by one in front of you? "

Yun Ruo Lu said excitedly. As the saying goes, there is no need to worry. If she went to find Yuchi Xuan and send out her troops, it wouldn't affect her at all. It was better than being trapped here to die!

"This King said no! "You're not allowed to discuss this matter any further. Think of other ways!"

Yuchi Chen was also very resolute. He told Yunluo to go find Yuchi Xuan not only on his behalf, but on his behalf as well.

Naturally, the meeting ended without a conclusion. Yun Ruo knew what Yuchi Chen was thinking, but right now, they had no choice but to seek help from Yuchi Xuan.

Thus, Yun Ruo Lu secretly made up her mind and secretly went to find Yuchi Xuan.

That night, Yun Ruo took advantage of Yuchi Chen's visit to the barracks to leave a letter behind before leaving quietly on her horse.

Yuchi Xuan's military camp was a day's journey away from them. She only hoped that there would still be time!

On the other side, Yuchi Xuan was seated in a soft chair, listening to the report of the spy who had returned.

"Your Royal Highness, you've already killed the fifth soldier who came to call for reinforcements. I'm afraid it won't be good if we let the emperor know, right?"

An armored guard by Yuchi Xuan's side whispered.

The spy kneeling below had already explained how Yuchi Chen had defeated the enemy today.

Hearing the words of the guard beside him, Yuchi Xuan frowned in dissatisfaction. He spoke with profound meaning, "You think a soldier trained by Yuchi Chen can escape the enemy's encirclement and arrive at my military camp?"

The meaning of those words was extremely clear. The guard's face immediately turned pale, and he no longer spoke.

Everyone clearly understood the reason why Yuchi Xuan didn't join the battle. Borrowing a knife to kill others was an ingenious method.

"Your Highness, just now, another person escaped from the canyon and is rushing towards our military camp. Your Highness, what do you think?"

After the spy finished speaking, he didn't dare to look up at Yuchi Xuan's expression and could only lower his head to await his orders.

"You still want This King to teach you such a small matter?" They did not die on the way. When they reach the military camp, they will be killed by This King! "

He wanted to see how long Yuchi Chen could hold out for!

"Yes sir!"

The scout respectfully replied before he left. At the same time, he also arranged for people to prepare to deal with the person who was about to arrive.

Yun Ruo Lu hurried without stopping all the way to Yuchi Xuan's military camp. Because of the days of constant travel, her body felt very uncomfortable.

A faint pain came from her abdomen, but Yun Ruo Lu couldn't care less and could only mutter in her heart: "Child, you must be stronger. If you can't even handle this kind of fatigue, how will you meet your mother in this world! "

However, what she did not know was that what awaited her in front was a challenge from the god of death!

It wasn't easy to walk on the snowy road at night. Yun Ruo Lu had been ambushed by enemy troops many times, but she had been able to escape.

The sky was about to brighten. This meant that she would be able to find Yuchi Xuan very soon. That meant Yuchi Chen would be saved!