"Master Shanyu, we can attack Cao's army by digging tunnels."

Yuan Xi told him his proposal.

"This plan is very wonderful!"

Tadun Shanyu's eyes lit up and he quickly smiled,

"Okay, let the young master take responsibility for this matter!"

Yuan Xi cursed in his heart, but he still smiled and took the order.

So the Wuhuan people stopped siege and began to set up camps outside the city.

According to Tadun Shanyu's instructions, Yuan Xi found a suitable location and surrounded it with a tent so that it was not airtight.

After determining the direction, he directed the Wuhuan people to excavate.

Fortunately, the soil on the grassland is relatively soft, and there are a large number of Wuhuan people as coolies. As soon as the sky fades, the authenticity has begun to take shape.

After dinner, Tadun Chanyu took Su Puyan and Wuyan and walked over staggeringly.

"Mr. Yuan, what's the situation?"

"Reporting to Lord Shanyu, the progress is very smooth."

Yuan Xi smiled,

"We can attack the city by three to five days at a fast time, and we can attack the city by seven days at a slow time."

"Very good!"

Tadun Shanyu was overjoyed and looked at Liucheng not far away, and said angrily,

"When I attacked the city, I must cut off Yang Ling's head as a wine glass!"

...

Liucheng.

As night fell and after confirming that the Wuhuan people would not attack the city overnight, the Cao army soldiers also breathed a sigh of relief.

Yang Ling and a group of generals gathered in the lobby, discussing military affairs while having dinner.

"I just counted the food and grass in the army, which is at least enough for half a year."

Gao Rou reports.

Although Cao's army set off from Ganping County, light chariots were on the road and did not carry too much food and grass.

But Liucheng was the royal court of the Wuhuan people, and there was a large amount of food and grass stored there, which was enough for Cao's army to use.

"That's fine."

Yang Ling nodded.

"Military advisor, the Wuhuan people suffered such a great humiliation today, but they gave up siege against the city. I am afraid there are other conspiracies, so we should be careful."

Tian Yu was on the side.

"I'm sorry, Mr. Zitai, don't worry, the Wuhuan people can't even make siege equipment, how can they siege the city?"

Gan Ning smiled discontently.

"General Xingba, you can't say that."

Tian Yu said seriously,

"Although they can't make siege equipment, they can dig tunnels!"

But his words reminded Yang Ling.

As Tian Yu said, the Wuhuan people are very likely to attack the city by digging tunnels!

Thinking of this, Yang Ling hurriedly said,

"Mr. Zitai said very much. Zhou Cang!"

"The last one will be here!"

Zhou Cang threw down his job and stood up.

"You immediately lead people to lay a row of urns along the city wall and order people to monitor day and night, don't let the Wuhuan people dig in the tunnel."

Yang Ling ordered.

"Here!"

Seeing Zhou Cang leaving quickly, Yang Ling breathed a sigh of relief.

The next morning, Yang Ling led Zhao Yun, Tian Yu and others to climb the city wall of Liucheng.

He looked around and frowned slightly when he fell into the Wuhuan military camp.

"Are you a little weird looking at those tents?"

Following the direction he pointed, everyone looked over.

As Yang Ling said, those tents were strange.

Not to mention the military camps far away from the Wuhuan people, the layout is also quite unreasonable.

Several tents surrounded a circle, blocking the situation inside so that it was airtight, and Wuhuan people kept coming in and out.

Although they couldn't see clearly what they were holding, they could tell what they were carrying.

"It seems that the Wuhuan people are indeed digging tunnels!"

Tian Yu said in a deep voice.

"Since that's the case, we should be ready!"

A sneer appeared on the corner of Yang Ling's mouth.

...

After three days and three nights and continuous excavation, the tunnel has become extremely deep.

After repeated measurements, Yuan Xi finally determined that the other end of the tunnel was already underground in the city.

He came excitedly to the Tadun Shanyu's tent,

"Sir Shanyu, the authenticity has been almost ready and can be put into use tonight!"

"Young Master did not disappoint me. If you conquer Liucheng, you should be the first to be the leader!"

Hearing this, Tadun Shanyu was also overjoyed and his eyes looked at Yuan Xi were full of praise.

Although he looked down on Yuan Xi, he had to admit that the Han people were much smarter than the Wuhuan people.

When the sky faded, the royal guards of the Wuhuan clan also came to the entrance of the tunnel.

The royal guards selected elite warriors from various tribes, which are described as one or ten, which is not an exaggeration.

They were all personal soldiers of the Shanyu, with only about a thousand people and never dispatched easily.

From this we can see that Tadun Shanyu also invested a lot in order to capture Liucheng!

"As long as you win the Han dog tonight, you will all be rewarded!"

Tadun Shanyu said in a deep voice.

"Thank you, Lord Shanyu!"

The guards of the royal tent held their chests and roared in a low voice.

"Okay, let's go!"

Tadun Shanyu waved his hand.

In order not to attract the attention of Cao's army in the city and to be able to send more troops at once, Yuan Xi ordered people to dig out three authentic tunnels not far away.

The guards of the king's tent jumped into the tunnel one after another, and walked along the narrow and sultry tunnel to the end.

After the preparation was made, the Wuhuan people in charge of excavation continued to wave their tools!

According to the original plan, they wanted to dig more than ten steps forward and then dig to the ground above their heads.

However, to the surprise of the Wuhuan people, they had just dug a few steps away and felt that the front was empty.

As a ray of light shone into the crypt, fresh air also poured in.

What's going on?

The Wuhuan people in front looked at each other.

They waved their tools and dug a few more times.

With a "slam" sound, the earth wall in front collapsed, and the situation outside was also revealed to them.

It turned out that Cao's army actually dug out a huge pit along the city wall.

At this time, the Wuhuan people in the three tunnels were exposed to the pit.

But on the edge of the pit, there were dense crowds of Cao soldiers, eyeing them!
To be continued...