At this moment, there are indeed a large number of their troops stationed in the mountains and forests of northern Vietnam, and they are also the most elite troops in the whole country, and they have trained the ability to fight in the mountains and forests since childhood.

At the beginning, these people also understood that if we had a hard fight with the Tang army, then we really had no chance of winning at all, although the countries next to them were not as strong as Vietnam's military strength, but if Vietnam wanted to destroy them, it was estimated that some of the wars would be fought for more than ten years.

But how long did it take for the Tang army? The time for the real battle is not even a month, and all the rest is the time for material transfer, which means that if the Tang army wants to fight Vietnam, it will be two or three months at most, so they must come up with surprise troops.

The deception is the surprise soldier they have in mind.

If there were no suspicions and definitions from Li Xiang's previous doubts, then many people would believe in these Vietnamese, but Li Xiang had already said before he left, the clansmen of this country would not surrender so easily, and don't believe some things, they have done too many treacherous things, so when these people came to the Annam Metropolitan Protectorate, Changsun Ze began to doubt them.

Nanshan Pass

Wu Yuanhao, the commander of the army, looked at the letter in his hand, he couldn't believe his eyes, how could the Prince of the Tang Dynasty come up and come to Nanshan Pass?

Did the news from our side leak? It's impossible, this pass is a purely military pass, except for the soldiers here, no one can be stationed here, there was originally a group of ordinary people, and now these ordinary people have been moved.

"The order goes down, the left and right armies immediately move to other places, and they cannot come back without my orders, only the original defenders remain."

Although I don't know what this matter is about, Wu Yuanhao also did what the Prime Minister said, in case that prince really wants to come, we can't let them see the slightest clue.

Vietnam has passed this deception up and down, which has also been discussed by many people, and finally they have also come to a conclusion, if they don't do this, then they won't even have a chance to bomb and surrender in the future, this time they are ready to lure the enemy to annihilate the Datang army 2~30,000 people at one time, then they can make the Datang army bleed, at least for a year or two, it will not pose a threat to them.

At that time, they will send an embassy to negotiate with the Tang Dynasty, for example, when the Tang Dynasty attacks Tianzhu Kingdom, they promise not to bring any trouble to the rear of the Tang Dynasty, and even give out some supplies, it is estimated that the Tang Dynasty Army will not attack them at that time.

This is called fighting to promote peace.

They also understand that there are too many countries conquered by the Tang Dynasty, if you don't have some ability, how can the Tang Dynasty court look down on you?

"Search the surrounding mountains and forests again, and if you find a suspicious person, kill them directly, don't bring them back to me."

Wu Yuanhao still felt a little uneasy, how could the Prince of the Tang Dynasty casually propose to come here? I guess I heard some other rumors, so I need to clean up the surroundings.

The men immediately began to search the area around Nanshan Pass, in fact, they had searched the surroundings almost 80 times, and there were no other people here except their own people.

In addition to the original defenders, the other two armies were transferred from the south, and they did not converge with the local defenders, they were just ambushed in the mountains and forests on both sides, but when these two armies began to retreat to other places, the original defenders were immediately dumbfounded, I really didn't expect that there were so many troops around them, there were more than 30,000 people, plus the original defenders needed 40,000 people at such a checkpoint.

For a country like Datang, tens of thousands of troops are nothing, but for a country like Vietnam, a small checkpoint needs 40,000 people, which almost mobilizes 1/3 of the country's troops.

Just when the southern armies on both sides retreated, a soldier nodded secretly, this person was the meticulous work of the Tang army in Nanshan Pass.

Before, he also received an order from the Metropolitan Protectorate, asking them to see if there was anything special around them, such as army movements and the like, he also touched the entire military camp, but in the end he didn't get any news, and now seeing the retreat of the troops on both sides, he was also so frightened that his heart was about to jump out.

The guy hurried back to his tent, and now that most of the people in the tent had gone out to work, he described the situation in short sentences, and then quickly came to the hill behind the tent.

There are no ordinary people on the mountain anymore, and if you want to send this information out, you have to go through an emergency channel.

"Who?"

He was also spotted by people who were searching the mountains and forests.

Recently, the Vietnamese army has been very strict with the surrounding management, and they also know that there will definitely be big spies around them, but they didn't expect the spies of Datang to wear Vietnamese military uniforms like them.

This man of the Tang Dynasty heard the shouts of the people around him, and he did not panic in his heart, he walked many times, there was a nest of pigeons hidden on the top of the mountain, he had to send the news there, usually someone went to the barracks to pick up the news, but now there is no one in the village, so he has to take this road.

"Who else could it be? Damn, I don't even know each other? What are you doing with a knife at me? You're going to cut me down? ”

Hearing the familiar words, the army that was searching for it took a closer look, isn't this Hou Er, who is in charge of delivering the news in the barracks?

"What are you doing here? It's not you searching the mountains today, are you? ”

The junior officer who led the team said with some disbelief, after all, they are usually lazy and refined, if there is no task, who will run to the mountains when they are full?

"Do you think I'm willing to come up, it's not that idiot of Titagon yet, he's going to ask his brother-in-law to guess, do you see that guy?"

As for how to deal with these patrols, Hou Er can be said to be very clear, he has been in the barracks for so many years, if he doesn't even have this ability, then don't mess around here, if he rushes all the way up, it is estimated that he will have to die here when the news is sent, the most important thing is to startle the snake.