Huo Guang looked at Liu Tan's cold eyes and expression, and thought to himself that they were indeed father and son.

Then his mood became a little complicated, as he had hoped to see such traits in Crown Prince Liu Ju.

In Huo Guang's view, Liu Ju was too kind but lacked courage. He sometimes wondered why both the Liu and Wei families had no shortage of ruthless people. Even the easily overlooked Wei Zifu was able to survive from the hands of Queen Chen Ajiao.

As for the royal family, there is no need to mention it. Why didn't Liu Ju have this kind of energy?

Liu Ju had encountered difficulties before, but in the face of those difficulties, he always lacked the momentum.

For a moment, Huo Guang thought that if Liu Tan was Liu Ju, he wouldn't have to worry so much.

Huo Guang shook his head to drive the thought out of his mind, and immediately asked someone to deliver the letter to Yumen Pass, and by the way, he also asked Liu Tan to stamp his seal on it.

After Liu Tan finished building it, he said, "Choose a man and a group of the fastest horses, and send them to Chang'an to the emperor."

Huo Guang watched Liu Tan take out the pieces of paper without caring about their neatness. He folded them into the smallest and most convenient shape possible for carrying, wrapped them in a layer of cowhide, and put them into a flat lacquer box. Liu Tan also locked the outside of the lacquer box, then turned around and threw the key into the brazier.

Huo Guang: ???

Jiang Chong asked in bewilderment, "Your Highness, how...how can His Majesty open this?"

Liu Tan said: "It opens with a simple chop, to prevent the rider from peeking."

He paused and said, "Now that I think about it, the appearance of this group of people is too strange. Even if I think I've done a good job of keeping this matter secret and it shouldn't be leaked, there's no guarantee there won't be any mistakes or omissions along the way. In any case, it's better to be cautious."

Huo Guang understood and asked, "What about Wei Guan?"

Liu Tan was silent for a moment before saying, "He...his riding skills aren't much better than mine. If I let him go back now, he'd be easily discovered. Even if no one noticed anything at first, they'd realize something was wrong after seeing me send him back first. But staying here is also somewhat dangerous, so...let's wait for Lu Xuan to wake up. Once he does, have him find someone to take Wei Guan to the Xiongnu."

Huo Guang and Jiang Chong: ???

Throwing him into the enemy's lair out of concern for his safety? They both felt the turn was a bit hasty, and for a moment they couldn't quite keep up.

Liu Tan said with a smile: "The most dangerous place is the safest place. Besides, I had decided to let Wei Guan go to the Xiongnu to draw a map, but I didn't expect to encounter such a thing. Anyway, he is not injured, so let's continue according to the plan."

Huo Guang said anxiously, "What if he doesn't come back?"

Liu Tan smiled and said, "Can't come back? If you can't come back, dig a grave right here."

Although he was smiling, Huo Guang and Jiang Chong both felt the seriousness hidden behind his smile.

Huo Guang and Jiang Chong suddenly felt relieved. It must be said that at a time like this, it was very reassuring to have a leader with ideas. It was much better than a lump of dough.

Otherwise, the two of them would have to help come up with ideas.

At this point, Huo Guang had basically forgiven Liu Tan's frequent tantrums and advised him, "In any case, Your Highness, please take care of yourself."

Liu Tan nodded perfunctorily and turned to walk into Lu Xuan's tent.

At this time, Lu Xuan was still in a coma. He went forward and touched Lu Xuan's forehead. He didn't know whether his hand was too cold or Lu Xuan was really starting to have a fever, but he actually felt that the temperature was higher than before.

Liu Tan had been feeling a bit sleepy, but he was suddenly awakened when he felt Lu Xuan's temperature. He quickly asked, "Is Lu Xuan starting to have a fever?"

As he spoke, he asked Miao Rui and Bigo to try it as well. They both said hesitantly, "It seems to be a little warm."

Liu Tan was suddenly a little panicked. Although it was not very hot now, it would be too late once the temperature really rose.

So he asked someone to add another layer to the tent and fetch water to wipe Lu Xuan's body.

Of course, he didn't have to do these tasks, but because of his worry, he didn't sleep all night.

When the sun rose, Lu Xuan's temperature finally dropped.

Liu Tan sat in the tent, supporting his forehead with one hand, waiting for the doctor to come and change Lu Xuan's dressing.

When the doctor came over, Liu Tan was almost scared when he looked up - the doctor who looked quite energetic yesterday had bags under his eyes and dark circles after a night, and his eyes were full of fatigue.

Liu Tan knew that he had been busy all night. After all, when they first came out, no one expected to encounter such a thing. He didn't bring many doctors with him. You know, doctors were a rare species in this era, and most of the rest were barefoot doctors.

The doctor carefully observed Lu Xuan while changing his dressing and said in surprise, "There's really no sign of an ulcer."

Although there is definitely redness and swelling, the wound has already clotted and has reached a state of initial healing.

Liu Tan took out a bandage that had been disinfected in alcohol and asked the doctor, "When will little Kunmi wake up?"

The doctor said uncertainly, "Two days at the fastest, three or four days at the slowest. It all depends on the individual's constitution. Little Kunmi is young and strong. As long as the wound doesn't ulcerate, he will wake up soon."

Liu Tan finally felt relieved and said quickly, "Thank you, doctor. Please take care of yourself as well."

The doctor said bitterly, "Oh, I... I can't sleep. Every time I close my eyes, I see those soldiers groaning in pain. Your Highness, is that medicinal wine you used... really gone?"

Liu Tan was helpless: "If there were still some, I wouldn't hide it."

The doctor sighed and said, "What a pity! Many people's limbs must be amputated. I'm afraid only a few will survive."

The doctor was also quite shocked. Originally, he was responsible for taking care of Liu Tan, Princess Danyang, Huo Guang and others. These nobles rarely suffered from injuries, let alone headaches and fevers. How could he have seen such a scene?

However, he had a compassionate heart as a doctor and could not bear to ignore these people.

But what can we do? We can only leave it to fate.

Liu Tan then realized that by the time the alcohol was produced, many people might have already succumbed to the infection, so on the one hand, alcohol was needed, but the most important thing was anti-inflammatory drugs!

When it comes to anti-inflammatory drugs, Liu Tan can think of a lot of drugs, such as cephalexin, but there is definitely no cephalexin these days. An older one is sulfonamide, but even this is not available.

He rubbed his forehead and said, "I understand. Now I can only work hard."

The doctor shook his head and sighed and left.

Liu Tan was already sleepy, but he became more alert because of his worry.

He simply didn't go to sleep, and let Miao Rui and Big Gao take turns to rest, and then let the people around Lu Xuan take turns to rest.

Only then did the people around Lu Xuan change their views on Liu Tan and their attitudes became more gentle.

Liu Tan simply brought a scale and sat on the edge of the bed, then propped up his chin with his hand and stared at Lu Xuan in a daze.

Of course, he was in a daze in the eyes of others, but in fact he was still thinking about how to reduce inflammation.

He had seen the conditions of the wounded, and to be honest, they were all horrific. Without alcohol, they had to rely on soldering irons to stop bleeding and kill bacteria. It seemed that the people died of pain before they died of infection.

Of course, there's also the idea of ​​using wood ash, but right now, with grass growing and birds singing, where can one find wood ash? Even if one could find it, one would still be worried that people might have a reaction to grass grown outside the Great Wall and wouldn't dare use it.

Liu Tan tried hard to find any anti-inflammatory drugs in his mind, but after thinking for a long time, he couldn't think of any that could be used.

At this time, I hate that my major is not practical enough. Even if it is ancient Chinese, what does it matter? If I don’t understand the language, I will eventually understand it in this environment.

So what if you know history? All you know is a rough outline. Besides, these are real people, and they may not follow the so-called history books!

Liu Tan was so lost in thought that he actually fell asleep with his chin in his hands!

The one serving him now was Bi Gao. He was very conflicted for a moment. He wanted to wake Liu Tan up and let him go back to sleep, but he was worried that Liu Tan would not want to sleep after waking up.

Bi Gao observed carefully and was surprised to find that his prince was sleeping soundly in this position, without moving at all!

How could he know that Liu Tan was able to remain so steady because he always had this posture in his dreams!

In his dream, he seemed to have returned to the days when he was working on his thesis every day, flipping through documents and historical books, and staying in the library for the whole day.

He couldn't remember the title of his paper, nor his purpose. He vaguely remembered opening a book, and a line of words in the middle of the page caught his eye: "Clears heat and detoxifies, reduces swelling and relieves pain." It is used to treat sores, boils, swelling, and pain caused by heat and toxic stagnation in the skin, with symptoms of redness, swelling, heat, and pain.

Liu Tan in the dream was shocked. He vaguely felt that this seemed to be what he wanted, but he never thought about why a person majoring in ancient Chinese would need this thing.

He glanced up hurriedly and saw only the Golden Ruyi Powder. Before he could see what was below, he woke up excitedly.

Just when Bigao finally made up his mind to wake Liu Tan up, he suddenly saw Liu Tan open his eyes and said, "I have a solution!"

Bigo was startled by him and asked cautiously, "Your Highness...what...is there a solution?"

Liu Tan immediately stood up and said, "Go ask the doctor... Forget it, go ask the medicine boy he brought with him, if we have a medicine like Golden Ruyi Powder?"

Big Gao was a little bewildered. "Golden Ruyi Powder? This... I've never heard of it, but... I'll send someone to ask right away."

Liu Tan nodded. He also felt that there probably wasn’t any. If there was, it would have been used.

At this moment, he actually had some hopelessness, because if the Golden Ruyi Powder could not prevent the infection, then he would probably have to dream again.

I just don’t know if I can still dream about it.

While Bigao was sending people to inquire, Liu Tan touched Lu Xuan's forehead again and found that his body temperature had completely stabilized. He couldn't help but breathe a sigh of relief.

Not long after, the eunuch who had been sent out came running back and said, "Your Highness, the medicine boy said he had never heard of it."

Liu Tan's eyes lit up. "That's perfect! I have a recipe here that clears away heat, detoxifies, reduces swelling, and relieves pain. Let's get them to prepare it for everyone!"

Bi Gao was also very happy to hear this. He also knew that his Highness had been worrying about this for the past two days, so he immediately said, "Okay, there is no need to trouble Your Highness. Just tell me and I will write a prescription for them."

Huh? Recipe?

Liu Tan fell into deep thought. He seemed to only remember the ingredients in the recipe, but he didn’t see the specific proportions!

This dream seems... not quite complete!