The direction of Yun Yao's finger happened to be a lime mountain.

The limestone in the lime mountain can be taken directly and calcined to become quicklime. Although there is no lime kiln here, because the temperature of the outer flame of the open flame is about 1,300 degrees, which is slightly higher than the temperature of limestone calcination, if it is operated properly, it is possible to use the open flame to calcine some quicklime for disinfection.

Yun Yao leaned on Gao Su's shoulder and whispered in his ear: "Pile some firewood and grass under the rocks, don't pile them too high, and let the tongue of fire touch the rocks slightly; Let the rocks burn in the fire for a while, and a lot of quicklime will fall crackling. ”

Gao Su bowed slightly, repeated her words, and asked the sergeants to do the same.

Yun Yao looked at the busy sergeants who came and went, and suddenly asked, "Changgong, if you don't let them touch the water source, how can you get water?" ”

Gao Su patted her soothingly, signaling her to calm down. He then walked up the rocky beach and soon found several trees the size of bowls. He picked one of the suitable ones, cut off two trunks in two of them, and slowly cut them into two simple wooden scoops.

Yun Yao lay on his shoulder, his eyes looked at it without blinking, and gradually came to his senses. The long scoop has a handle.

"This dagger has always been in the leather bag, and it has never been stained with blood." Gao Su explained. Just before he could take the dagger, he had already torn off a piece of his underwear and wrapped his hands firmly. As he slowly peeled the wood, he explained:

"In that rocky beach, there were two shallow pits that were slightly sunken, barely enough to hold one or two people in them. Before I left, I had ordered them to scorch the rocks with a blazing fire, and they must have burned to the brim by now. ”

Yun Yao really understood. The rocks on the rocky beach are mostly granite, not as fragile as limestone, and water cannot penetrate into them. It would be great if there was just one place where you could barely boil some boiling water to scrub your body.

And where there is a lime mountain, which can provide a steady supply of quicklime, is a great help.

After Yun Yao thought about it clearly, she was truly at ease. She slowly slid down Gao Su's neckline, down the placket of his clothes, all the way down to his waist. Gao Su was still concentrating on cutting wood, and in a short time he cut out four or five simple wooden scoops. She found a comfortable place in his waist, yawned slightly, and slept peacefully.

She stayed awake all night last night, and she had just experienced such a tragic battle, and now she felt sleepy as soon as her spirit relaxed.

Gao Su paused, looked down at the small lump around his waist, and there was more helplessness and tenderness in his eyes.

He took out two more simple wooden scoops, put the dagger boy away, and took the simple wooden scoops and walked down the river, and in a short time came to the lime mountain.

A fire had already burned around the rocky mountain, and the limestone crackled in the firelight, and the gray-white rocks broke apart one by one, and after the fire was calcined, the gray-white powder finally fell down.

The Han soldiers stood on the pile of troubled times in twos and threes, raising their eyes to look at the lime mountain in the distance, and their expressions were a little sluggish.

"Isn't it dazzling that those stones can be burned?"

"You can try to pinch yourself - stupid what are you pinching me for!"

"Well, I was distracted just now, but it's the same with pinching you. Does it hurt? ”

"You, you, you--if the general hadn't ordered you not to touch the water source in the morning, Lao Tzu would have kicked you into the water!"

……

Gao Su walked up to the eleven people and handed them the things in his hand to a few of them.

"Be careful when taking water, don't let the long handle get on the water source." Gao Su commanded. As soon as he left, the Han army was already piled with dead leaves and dead grass around the big stones, as well as those slight depressions, and the fire followed the wind, scorching the front and back of the big stones, and burning the rocks to a boiling heat.

The water splashed on the rocks, and white smoke immediately rose from it.

They walked to the two slight depressions in turn, and carefully scrubbed their whole bodies with slightly hot water, especially the blood-stained places, which were carefully rubbed with grass and wood ash. No one complained that the general's order was superfluous, for the word plague was so frightening that no amount of caution could be overstated.

It's all men here, so they do these things with a big grin, and they don't have any scruples.

The fire outside gradually went out, and a thick layer of gray-white powder was spread on the ground around the stone mountain.

After they had cleaned themselves, they threw their coats and armor into lime water and exposed and soaked them in the sun. Then they carefully sprinkled the gray-white quicklime powder next to the water source, even taking care of the grass a little farther away.

After the fire, the grassland was charred black, and after sprinkling fine white quicklime powder, it was like a fine snowfall.

Then they burned the scoops of water clean, for the stalks might be stained with toxins, and at last they poured all the horses they had brought with them into the ashes of the grass and trees, and carefully brushed the fur and hooves with a straw brush.

The wilderness was empty of nothing, except for the occasional sound of sporadic conversation or two as the breeze blew.

When Yun Yao woke up, she was so frightened that she was about to float... Floating... She was really scared.

A small ball floated leisurely in mid-air, looking at the Lanling King who was sitting on the rock in front of him, with a faint look of exhaustion between his eyebrows, rubbing his eyes vigorously, and suddenly covering his eyes with a whimper, and looking out through his fingers.

Gao Su had already seen her, and said with a low smile: "Awake? Then he slapped her in front of her.

She covered her eyes and carefully floated into Gao Su's palm, and was taken in front of her by Gao Su again. Gao Su pointed to the bubbling slaked lime next to him, as well as the armor and clothes in the lime water, and wrote lightly: "Those clothes and armor need to be soaked in lime water for some hours, and then exposed to the sun before they can be used." ”

So now, he sits on the edge of the rock, with no shelter.

She covered her eyes and turned around in the palm of his hand, facing him with her back to him.

Gao Su kindly reminded: "It's all men here. Yao, they didn't know you were here, so there was nothing taboo about it. ”

Σ(°△°|||)！！！

She whined and floated again, but this time it was to Gao Su. She covered her eyes and spun half in mid-air, covered her eyes again, and slowly floated down to Gao Su's chest. I stumbled to find a place to stay.

It's safer here.

When she just woke up, she nestled in Gao Su's waist, and almost scared her soul away.

And what is "all men here, so there are no scruples"...... But she has, is she okay!!

Yun Yao trembled and curled up into a ball, shrunk on Gao Su's chest, covered her eyes, and slowly calmed her heartbeat.

Gao Su laughed lowly, and there was a little more narrowness in his eyes.

He rubbed the top of her head with his thumb - though he couldn't touch it - and whispered, "A-Yao, open your eyes." ”

She covered her eyes and said glutinously, "No." Even his voice changed slightly.

Gao Su laughed deeply again, his chest shaking slightly. He covered her behind her with his hand, blocking it tightly, and then said softly: "Open your eyes, I'll block it for you." You can't see it, and they can't see you. ”

She peeked through her fingers, and Gao Su was looking at her with a faint smile in his eyes, and there was a faint hint of narrowness. She cautiously turned around again, and sure enough, she saw Gao Su blocking her vision with his hand.

A faint light came through between his fingers, and as long as you didn't look between his fingers, you really couldn't see anything.

She breathed a sigh of relief, sat down on his chest, and looked at him with wide eyes.

The two of them were silent for a while, only the hydrated lime next to them was still bubbling bubbles.

A moment later, the Han soldiers returned in twos and threes, followed by the cleaned horses. Yun Yao covered her eyes again, turned her back, and said softly, "I'd better sleep for a while." After that, he lay down on Gao Su's chest, his eyes closed, as if he wanted to really sleep again. Gao Su smiled helplessly, and looked at the Han soldiers in front of him calmly, as if nothing had happened just now.

But his hand was always hidden behind Yun Yao, preventing them from discovering her traces.

The Han army reported to Gao Suyu that everything here had been taken care of, when should they return?

Gao Su pointed to the bubbling slaked lime and instructed, "Fetch some more water, and rinse the clothes and armor carefully a few times." Although lime can get rid of the epidemic, it is too strong after all. "If you accidentally get on your body, it will hurt for a long time.

The Han soldiers replied again, took some clean water from the river, and rinsed their clothes and armor many times until they could no longer smell the lime, and then put them in the sun until they were dry.

Then they gathered themselves and rode their horses down the river.

When I arrived, I felt heavy, but when I returned, I felt much more relaxed. They rode their horses over the plain and back into the rolling hills. Two days ago, Gao Su told everyone that he would stay here for two days when he returned, and when all the people from the five places had gathered, he would return to the camp together and return to General Wei Qing.

About half a day later, the Han army from another road also arrived one after another.

They were luckier than Gaosu, and stopped the Huns who were about to go to the water source on the way, and then they set up an ambush on the road and killed them one by one. After Gao Su listened to their report, he sighed in a low voice and said, "Good." ”

On the second day, the third and fourth Han armies also returned one after another. Like the Second Han Army, they all intercepted the Huns on the way, but one was closer and the other was farther away. When Gao Su sent them to various places that day, he had already carefully considered it: he himself went to the farthest water source (and the closest one to the Huns), and if he could stop the Huns along the way, then the rest of the Han army on the four routes would probably not be in any serious trouble.

But by the third day, they waited until late at night, and did not wait for the Fifth Han Army.

This was followed by the fourth and fifth days......

The Han soldiers began to worry. Because according to common sense, they shouldn't be so late.

Unless they missed, or ran into a Hun army on the way.

So they began to deliberate whether they should go and greet their companions who had not returned.

But before they could negotiate a charter, the last twelve Han soldiers had already returned from the other side of the col. Their bodies were mottled with blood, and even the horses under their crotches looked tired. The moment they saw Gao Su, their eyes lit up, and they hurriedly jumped off their horses, stumbled all the way, and ran straight towards this side.

While sprinting, he shouted intermittently: "General, general, hurry back, there is a Hun army!" ”

The situation became serious all of a sudden.

From the intermittent words of the last twelve Han soldiers, Gao Su learned that they had also cleaned up the water source. But on the way back, they encountered a Xiongnu army that had just returned.

- That's right, just as they were heading to the water source, Wei Qing won another battle.

The Huns who returned from the feathers were naturally angry, and when they saw that there were only a dozen Han troops in front of them, they pursued them all the way. They hid all the way, and finally got rid of the pursuers behind them, and came to the small col agreed the day before yesterday to join Gao Su.

After Gao Su listened, his expression turned grim and he ordered: "Return to the camp immediately!" Don't stop day and night, return to camp immediately! ”

Originally, they started quite cleanly, and by the time the Huns noticed that something was wrong, it was at least more than ten days later.

But there was a group of people and horses, and on the way back, they met the Huns who had returned.

In this way, things get complicated.

No one knows when the Huns will come, and they don't know how much the Huns know.

They did not delay any longer, and galloped away all the way, day and night, straight to the Han camp. Fortunately, they did not encounter any obstacles along the way, nor did they encounter any Hun troops who returned with feathers, let alone the pursuers who came from the Hun camp.

Galloping all the way south, without stopping for half a moment.

The shadow of the Han camp was already faintly visible in front of me, and the grove made a thin rustling sound in the breeze. After turning this bend and crossing two mountain streams, you can return to Hanying along the way. Everyone breathed a sigh of relief in their hearts, and their hearts, which were originally hanging high, slowly fell to the ground.

But before they could return to the camp, they saw a black army.

A black and oppressive, well-groomed army came to meet them, the Han army.

The speed of Gao Su's horse slowed down suddenly, and the Han soldiers around him were also muttering, unable to understand what was going on. It stands to reason that when they went out this time, they hid it from everyone up and down, only Wei Qing knew it, why did they see a large area of Han troops when they came back now?

And in front of the large black and oppressive Han army, it was General Wei Qing who stood on horseback.

When Wei Qing saw them returning, the worry in his eyes slowly dissipated.

He took two steps forward and said slowly:

"This morning, a Xiongnu envoy came to the Han camp and said that more than ten Xiongnu wizards were killed by the Han army, which is really punishable. So I asked, 'Why can't the Xiongnu sorcerer kill the Han army if he wants to throw the plague into the water source of the Han army?' The man muttered, 'You already knew,' and committed suicide by poisoning. ”

Wei Qing said that, turned over and dismounted, and gave them a Han army salute:

"It's a blessing for hundreds of thousands of Han soldiers to wait for this move."

If they miss this time, or if they are a little late, or if they get the news a little later, the plague will spread in large areas of the Han army. Even if there are military doctors who will save them in time, it is inevitable that there will be casualties. Therefore, their actions this time really saved many people. Moreover, after this incident, the Han army is bound to be vigilant, not only the more than 10,000 Han troops in front of them, but even the Han troops who will go north to conquer this time, such as Yunzhong County, Yanmen County, and even those Han troops who will go north to conquer in the future, will benefit from this.

The Han soldiers behind Wei Qing also saluted in unison: "It's really a blessing for hundreds of thousands of Han soldiers for me." ”

A low and deep voice echoed in the Han camp, showing a bit of solemnity.

The dozens of cavalry soldiers who came back were stunned, and they all turned over and dismounted and saluted, saying that the general did not have to be like this. Wei Qing shook his head slowly, pointed to the black and oppressive Han army behind him, and said, "If you don't come back, I will need to bring someone to meet you personally." ”

Just now, the details of the Hun camp came to report, and the military ministers were furious and wanted to strictly investigate the leakers. And he also said that he would take the heads of those dozens of horses at any cost. Because now in the camp of the Huns, there is no sorcerer who can pray to the gods and cast the plague.

In the eyes of the Huns, only a sorcerer who communicates with the gods can truly unleash the plague poison.

But now...... They don't have wizards anymore.