After several months of attack and fighting, Li Yuan's 30,000 troops attacked all the way from Taiyuan and finally arrived at the city of Tongguan.

Tongguan is the only way to attack Chang'an, and the gateway is located, and the famous Sui general Qu Tutong is stationed here.

Li Yuan's army and Qu Tutong fought for several consecutive days. Under Qu Tutong's tight defense, Tongguan City could not be captured for a long time. Qu Tutong did not dare to come out to fight Li Yuan in a decisive battle, so the war was in a state of strife.

In Li Yuan's camp, Li Er looked at Li Yuan's letter with a frown. After reading the letter, Li Yuan was excited and turned around excitedly, and finally said loudly: "Okay! OK! It's my beloved third lady. This time Guanzhong is going to fall into our Li family."

After Li Yuan said that, he looked at Li Er who was walking in happily and laughed.

When Li Er saw Li Yuan laughing, he knew that a happy event had happened. He hurriedly asked, "Seeing that my father is so happy, is there any good way to break through Tongguan?"

Li Yuan was so happy that he just shook his head: "No! It's more happy than breaking through Tongguan. Come and see, God is really helping me Li!"

After saying that, Li Yuan handed the letter to Li Er to read.

After reading the letter, Li Er couldn't believe it: "I didn't expect that my third sister would recruit more than 120,000 soldiers in three months. Now that we have these 120,000 soldiers, I think we can sweep through Guanzhong."

"Yes! Now we have 120,000 more soldiers and horses. In the future, we will no longer have to worry about the soldiers and horses of the court." Li Yuan breathed a sigh of relief.

Li Er thought about it and said, "Father, now as long as we occupy Chang'an, Qu Tutong loses the supply line in Chang'an, and Qu Tutong's retreat will be cut off. No matter how capable Qu Tutong has, there is only one way to retreat. At that time, it is the time when our army enters Guanzhong."

"Well! Your analysis is good. I think we need to send someone to help your third sister. She has developed too fast and should be lacking generals and staff." Li Yuan thought about it and said, "Let's do this! You bring a group of people to secretly help your third sister take Chang'an, cut off Qu Tutong's retreat. I will hold Qu Tutong here and prevent him from returning to Chang'an."

"Here!"

...

Time passed in a hurry.

Li Yu was checking the villagers to make green salt in the salt making workshop, and turned around and saw a tall and strong man.

This guy was over 1.8 meters tall, with a big beard, a man wearing bright armor, walked in.

He came directly to Li Yu and looked at Li Yu up and down.

Li Yu looked at the visitor and knew Uncle Fu a little. He immediately guessed who this person was and asked, "You are Uncle Fu's son Li Xueyi."

"You have a good attitude and actually recognize me, Li Xueyi. Are you Li Yu?" Li Xueyi asked in surprise. As expected, his reputation is true. His father always praised Li Yu for his ability. Unexpectedly, he actually recognized who he was at a glance.

"I think you, Old Li, have a good attitude! You actually recognized me as Li Yu at first glance." Li Yu smiled.

"Ahem..."

Li Xueyi was choked by Li Yu's words and coughed constantly.

When Li Xueyi stopped coughing, he turned his head and looked at Li Yu unnaturally and discussed: "I am only in my thirties this year. Is it too early to call Lao Li? Why not call Brother Li?"

"Okay! What's the matter with you coming to me today?" Li Yu saw that Li Xueyi was a generous person, so he immediately agreed readily and asked him about his purpose.

"Of course I have something to ask you for. Let's go, our lady has something to ask you for." After Li Xueyi said that, he pulled Li Yu up and left without saying anything.

When he arrived outside the workshop, the two fast horses were ready. Li Xueyi got on the horse and asked Li Yu to leave quickly.

Li Yu rode on a horse in confusion and followed Li Xueyi. As soon as he came to the official position, Li Yu couldn't help asking: "You are not here to stay in Wugong, why did you run back to come to me?"

"Of course I saved someone?" Li Xueyi said casually.

After hearing this, Li Yu was shocked and asked quickly: "Save someone? Who is saving? Is your lady injured again?"

"What nonsense is that? They are soldiers, soldiers of the Detachment of Women." Li Xueyi immediately explained unhappy when he heard him say that his lady was injured.

"So that's how it is! I was shocked." Li Yu felt relieved.

No more questions were asked, and the two fast horses were moving all the way. After a few hours, Li Yu and Li Xueyi finally arrived at Wugong County.

As soon as I entered the city, I saw people shouting and neighing horses. The streets were full of patrol soldiers and people walking around the streets. People came and went, and it was very lively.

After seeing the road, Li Yu nodded with satisfaction, feeling that Li Xiuning had managed Wugong County very well.

He came to the center of the city and was a heavily guarded mansion. When the guard saw that it was Li Xueyi, he did not stop him. Li Yu and Li Xueyi came to the mansion together.

Li Xueyi, who was familiar with him, brought Li Yu to the living room, but only saw several staff members arguing around the table, as if they were all in their own opinion, and no one could convince anyone.

Li Xiuning stood aside and listened to their argument. When he saw Li Yu coming in, he raised his hand and asked Li Yu to wait for a while. In addition, there was a person in the hall that could not be ignored. He saw that this person was about seventeen or eighteen years old, tall and handsome. In fact, as soon as Li Yu came in, he noticed this person at first sight. This person had a little acquaintance with Li Xiuning's eyebrows. Li Yu guessed who this person was.

He should be the famous Li Shimin and Li Er in history.

Li Yu did not go up and greet him on his own initiative, but sat aside and listened to the people arguing about something.

"I think it's better to use the city to resist the Yinshi Division, so that the casualties of soldiers can be reduced."

"The Yinshi Division has 30,000 troops, and the soldiers around us have 80,000 troops. We can defeat the Yinshi Division with dignity, so that we can prove to the world that our Detachment of Women can defeat the elite army of the court and expand our influence."

"Not good. Most of us are new recruits now. The 30,000 soldiers of the Yinshi Division are all elite. We do not have the advantage. Even if we defeat the Yinshi Division, there will be heavy casualties. I don't agree."

“…”

"Sister Three is the Li Yu who saved you for the second time?" Li Er walked over and sat beside Li Xiuning and asked quietly.

"Hey! You haven't seen him before, how do you know it's him?" Li Xiuning asked with a smile.

Li Er smiled and said, "He doesn't have the scholarly aura that a scholar should have, and this person is full of arrogance. Moreover, he has not saluted you since he came in. I guess he might be Li Yu."

After Li Er finished speaking, he turned around and looked at Li Yu again.

"The second brother has a good vision, he is Li Yu." Li Xiuning nodded and raised his thumb.

Li Yu, who was sitting not far away, listened clearly to the conversation between Li Er and Li Xiuning, and said with a smile: "Are you Li Shimin and Li Er?"

"Ahem..."

After hearing Li Yu's words, Li Er coughed so much that he was choked by Li Yu's words, thinking to himself how strange this person was talking.

"I am Li Shimin, you guessed it right, why did I become Li Er?" Li Er asked unhappily.

"Aren't you the second in your family? So it's good to call you Li Er!" Li Yu smiled and explained, feeling that it's good to give the future Emperor Tang.

"Puff!"

After hearing Li Yu's words, Li Xiuning couldn't help laughing, looked at Li Er with a pursed lips, and said, "Actually, second brother, I feel that this name is good too!"

Li Er felt so depressed after hearing Li Xiuning's words. Why do I feel that the name Li Er is so awkward?

After laughing for a while, Li Xiuning looked back at Li Yu and asked, "Li Yu, do you have any good solutions for Yinshi Division to send troops to encircle us this time?"

When everyone heard Li Xiuning ask Li Yu about the Yinshi Division's way of sending troops to encircle and suppress the Detachment of Women, they all looked up at Li Yu.

Li Er is the same. He wants to hear the talented man mentioned by his third sister, and have any good opinions.

"This! It's actually very simple. It's just a besieging the city and attacking aid halfway." Li Yu directly gave a solution.

"Encircle the city there, and fight for the aid there?" One of the middle-aged men looked at Li Yu with a look of doubt on his face.

"Li Yu is my uncle, Li Shentong." Li Xiuning quickly introduced.

Li Yu and the other party nodded to each other, and both parties did not make polite words.

Li Yu was not too anxious and said, "Of course, it is to surround Chang'an, and the attack on the support must be Yinshi Master."

Li Er immediately stood up and said, "There are only 10,000 soldiers in Chang'an City now. As long as we surround Chang'an, Yinshi Master will definitely go back to rescue him. We just find a good place to ambush him, and the big thing will be done."

"Well! In this way, we will take Chang'an City at the lowest price, which is easy." Li Xiuning also stood up and said happily.

In fact, this tactic of siege and aid is often seen in later movies. Passively becomes active and leads the enemy's nose. It is also the best tactic of using the weak to fight against the strong.

Li Er and Li Xiuning looked at each other, nodded to each other, picked up the map and discussed with everyone where the best place to ambush Yinshi Master.

Li Yu was not pretentious and said again: "No need to look at it. On the way I came, I saw the best ambush point, right on Xiaolin Mountain, where there was a canyon. The canyon was very narrow. The road was built close to the mountain wall on the west. The hillside was lush and trees could hide most of the soldiers. The flat ground on the east side of the road was not wide, without obstacles, about seventy steps wide. A little further into the canyon, the hillside was on one side of the road. Although it was not high, the slope was gentle and the shooting boundary was wide, making it easy to arrange the battlefield.

"If the Yinshi Division really passes through this road, they will be dead. As long as we block both ends, the government army has nowhere to run and can only run across the road. Our catapults and archers can play a role, and they can also limit the performance of the Yinshi Division's cavalry. It is really a good place to fight ambush." ​​Li Xiuning thought about the terrain there and quickly explained to everyone.

Li Shentong was silent for a moment and asked again: "What if the army of Yinshi Master does not pass by this?"

Li Er responded and said: "If Yinshi Master does not pass through this road, he will definitely take a detour. In this way, it will be at least one day later to return to Chang'an, so that the army can rescue Chang'an. We will continue to ambush and block the road, delaying his return to Chang'an, and the soldiers besieged in the city will take the opportunity to seize Chang'an."

Li Yu nodded in agreement, thinking that it was indeed a good thing that Li Er in history, and his military intuition and insight are really a genius.

Since the combat plan has been decided, it is to arrange personnel and transfer troops to relocate generals, and there will be nothing Li Yu has to do.

When he arrived outside the hall, Li Xiuning looked at Li Yu silently for a while before speaking: "There were several battles with the government army some time ago. Due to the battle, many injured soldiers appeared. What you said before was infection, wounds rotten, fever... Many soldiers died. Didn't you tell me about how to treat wound infection? I hope you can save those wounded soldiers."

Li Yu did not refuse. Since he could save people and gain faith, he was very happy to help, so he agreed readily.

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Chapter completed!