After a day and a half delay, Li Yuanai was not in a hurry.

The wind wheelbarrow he worked hard to make has not yet shown his power. Just because of the characteristics of the wind wheelbarrow, walking on the road is much more useful than a two-wheeled grain truck.

After passing the Xiaoliao River, Li Yuanai and his party began to turn into the edge of the mountain range of Taibai Mountain and walked along the curved mountain path to the south by an unknown mountain.

They have entered the Taibai Mountain Range, and at first glance they are all mountains.

God knows what this mountain is called and what it is called. In short, it is the mountain.

As Li Yuanai expected, mountain roads are difficult to walk, especially up and down, and the roads vary in width and narrow. In some places, several large stones are even filled in the stream, and people need to walk through the stones.

The characteristics of wind wheelbarrows have been fully utilized. No matter how many times you go or how many roads or the width and narrowness of the road are not a problem.

As long as people can pass by, the wheelbarrow can pass easily without stopping to fix the road.

Yuexi doesn't have that ability.

But the surrounding area is full of mountains and forests. Just cut down two or three big trees and cross between the two streams, and a wheelbarrow can pass.

If it is replaced by a normal grain truck, how can it be settled without cutting down six or seven trees?

Isn’t this just how time is squeezed out little by little?

Li Yuanai was quite content with her along the way, but she soon couldn't laugh.

The Goguryeo spy lurking in the dark had already realized the speed of the Tang army's advance and began to raid the grain team frantically.

They lurked among the mountains and forests, coming and going without a trace.

It will come every once in a while, and it will come every once in a while.

The Tang army had extremely strong combat effectiveness and did not allow Goguryeo's surprise attack troops to take advantage of much advantage.

However, the harassment again and again made the Tang army soldiers tense up and under great pressure.

"If this continues, it won't work!"

Li Yuanai muttered on the horse's back, it was okay to be attacked during the day, but the key was to be at night.

People always have to sleep, but they woke up five or six times this night. After a few more days, they couldn't stand the iron-clad body.

What's more, the soldiers have to wait for the battle during the day.

If this continues, the soldiers will collapse before they reach the Yalu Fence.

Xue Yimang's eyes were also covered with blood. Since Li Yuanai used magical means to build a bridge, in the heart of this friendly prince of Xue Yantuo, Li Yuanai has been a god-like existence.

Not only did he follow like a follower, but he also became a younger brother and followed him.

Hearing Li Yuanai's worried muttering, he also said, "His Royal Highness Shang has already forced them to get anxious. The closer they get to the front line, the greater the impact they will be. You must find a way to deal with it, otherwise the situation will be bad."

Li Yuanai asked, "In your Xue Yantuo, how can you deal with this situation?"

Xue Yimang said: "The possibility is not high. The place where we are is the endless grassland Gobi. As long as there are signs, it is not easy to hide deeper and find us."

Li Yuanai said silently.

late at night!

"Dongdongdongdongdongdong!"

The sound of golden gongs rang out again.

Li Yuanai has slept very lightly these two days, and he woke up as soon as the sound of Jin Luo was heard.

The man sweared a few words in the quilt, and listened to the noise outside the tent, he could only cover the quilt on his head.

Suddenly, the voice became lighter, and the eyes were dark and there was nothing to see.

Some people say that a small space helps human thinking.

In the darkness, Li Yuanai suddenly opened her eyes and sat up suddenly. Three words "night blindness" appeared in her mind.

Li Yuanai remembered that when he was a child, his family was poor and often fed with vegetables, which made him unable to see anything at night.

I went to the hospital and found out that I had night blindness.

I vaguely remember that night blindness is not a disease to be severe, but a lack of unique vitamins in the body, which has affected vision.

Night blindness is easy to cure. Just eat more foods rich in vitamin A: such as eggs, animal liver, fish, meat and other foods, and supplement enough vitamin A.

He rushed out of the tent.

"King Shang!"

Xue Yimang immediately came up to meet him.

"Thank you for your hard work!" Li Yuanai added a little more favor to Xue Yimang and asked, "Do you dare to go to the front line with me to see?"

Xue Yimang raised the bow and arrow in his hand without hesitation and said, "Yimang was born in the grassland and grew up in the grassland. I have been studying the skills of bow and horse since I was a child, so why should I be afraid of it?"

"Walk!"

Li Yuanai strode towards the most noisy place.

Xue Yimang followed closely behind, and a group of soldiers from Qianniu Guards also followed urgently.

They were the guards specially assigned by Li Shimin to Li Yuanai for self-defense, and they basically protected him in an endless manner.

After more than a hundred torches were brightly lit on the front line, Zhang Baoxiang was so angry that he stamped his feet and cursed: "A group of turtle grandsons know how to play with the silence. Don't catch the chance, I want them to look good."

"The person ran away?"

Li Yuanai came nearby and asked.

When Zhang Bao met Li Yuanai, he hurriedly said, "You are here too, these thieves. Where do you need to come to greet him in person? Isn't this a slap in the face?"

At this moment, the more respect the general's tone is, the more respectful he has.

Li Yuanai did not answer positively, but just squinted his eyes and looked at the dark situation not far away, and could not see anything at all, and asked, "What's the situation?"

Zhang Baoxiang was angry and had nowhere to vent his anger, so he could only hold his back and said in a muffled voice: "There is no situation. They just harassed us as always. They didn't let us rest well and made a big fuss. As a result, the camp did not rush in. But we couldn't tell which time they were harassing and which time they were attacking, so we could only deal with it carefully. It would rather trust that they had than trust that they did not."

At this moment, Xue Yimang suddenly shouted, "Be careful!"

Then there was a "whoosh" sound of the bow.

On this dark winter night, the bowstrings are not loud, but they are like thunder.

When Li Yuanai heard the loud shout, her hair stood up inexplicably and instinctively squatted down.

Since Li Yuanai flew over his head, Arrow Feather plunged into a tent twenty steps away.

Li Yuanai instantly burst into cold sweat. If he hadn't heard Xue Yimang's call first and then the sound of bowstrings, his life would have been explained.

Zhang Baoxiang was also scared and sweated coldly, shouting: "Protect the King of Shang!"

In fact, when Li Yuanai was squatting down to avoid arrows, the Qianniu Guards had already surrounded him.

Li Yuanai hurriedly stood up and shouted, "Hurry up, put out all the torches."

After the bridge building and Zhang Bao was convinced and apologized, the soldiers of this grain transport team had a certain respect for Li Yuanai, the Shang King. After observing his order, although he did not know the reason, he could not imagine the surrounding torches.

The reason why Xue Yimang made a sound reminder was because he saw an insignificant light flashing in the darkness, which was most likely the reflection of the weapon. He then made a reminder, and he also knew the approximate location of the thief and pulled the bow and arrow.

Suddenly it became dark in the camp, Xue Yimang's pupils shrank, and he let go of the arrow with thunder.

The arrow feathers passed by like a meteor, and a scream came from the darkness.

Obviously, this arrow hit the target directly.

Li Yuanai gave Xue Yimang a thumbs up and praised: "You're good at ejaculation! As expected, as I imagined, I think I have a way to deal with this group of cunning thieves."

Zhang Baoxiang was overjoyed and shouted, "Your Majesty, King Shang is really? That's great. These thieves have been disturbed for several days and have not slept with a stable sleep. It is impossible to relieve my hatred if I don't swallow them alive."

"Let's go to the big tent and say, it's so cold outside."

I don’t know if it was because of the reason why I was scared and sweating, but when the winter wind blew, my whole body shook three times.

When he arrived at the big tent, Xue Yimang wanted to avoid suspicion.

Li Yuanai directly asked him to enter and did not regard him as an outsider.

Zhang Baoxiang couldn't wait to ask: "The Shang King's plan is coming out?"

Li Yuanai answered the question that was not right and said, "Can the Duwei know about night blindness?"

Zhang Baoxiang said: "I know, it seems that because of eating less meat, this kind of situation is often found in soldiers, and it is not clear at night. This pair of soldiers fight at night is a major disadvantage, so when they usually decide to attack at night, they will specially choose soldiers with good eyes at night from the soldiers to fight."

Li Yuanai nodded. In this era, he already had a certain understanding of night blindness, and he was not ignorant of it. He also knew that it was because he ate less meat.

"I will correct it here. Night blindness is not because of eating less meat, but because animals eat less liver. In fact, the substances in meat are good for the eyes, but the benefits are not great. The liver has the greatest impact, followed by fish and eggs."

He didn't know how to explain vitamin A, so he simply stopped talking, and they couldn't understand it anyway.

Sure enough, Zhang Baoxiang and Xue Yimang were all confused.

Li Yuanai didn't ask them to understand, and continued: "We Chinese people eat rice and wheat as their staple food. Ordinary soldiers eat less meat and don't eat much liver. Therefore, even if they don't have night blindness, their eyes will be a little bad at night. On the contrary, they also grow rice and wheat, but they are essentially fishing and hunting nations, and hunting is part of their lives. They usually eat fish and meat. Therefore, as I expected, most of their eyes are better than us in the dark night. They can come and go freely in the mountains and forests at night. We can't do it, and our torch light is bright. This light gives us safety and allows us to move freely. But it invisibly covers our enemies..."

"Why?" Zhang Baoxiang widened his eyes.

Li Yuanai said: "Because it was too bright, the light in the camp affected their vision, making it impossible to find a little light in the distance." He paused and said: "This is why at the beginning, Yimang did not see the thief. As soon as we put out the torch, he could shoot the thief immediately."

Zhang Baoxiang actually did not understand the various principles of light derivation, but it did not hinder his understanding of Li Yuanai's words. He pondered: "In this way, it was the fire in our camp that pointed out the way for the thieves and provided cover for them?"

"Not bad!" Li Yuanai nodded and said, "At least, I judged this way from my current situation."
Chapter completed!