Xiao Guizi was completely baffled.

This person was only summoned to ask a few questions, yet he received a reward. What a wonderful thing!

It turns out that Daihai is a large lake on the southern slope of Manhan Mountain, and it is said to be the third largest lake outside the Great Wall.

It is about half the size of Wuliangsuhai Lake.

It is a high-altitude lake formed by the convergence of streams and groundwater from the surrounding mountains.

The Qingshui River, which flows through Shanwu, is the passage connecting Daihai Lake and the Yellow River.

The Qingshui River is currently in its dry season, but this is related to the water storage capacity of Daihai Lake.

The city of Shanwu, located on the banks of the upper reaches of the Qingshui River, is nourished by the Daihai Lake rather than the Qingshui River itself.

The city of Shanwu is located in a basin about twenty miles in circumference, surrounded by the Manhan Mountain, Hongtao Mountain, and Guancen Mountain.

The city of Shanwu was formed because of the Qingshui River flowing through it and because it was located on a vital route from Yanmen to Yunzhong and Shuofang.

It's a pity that such a beautiful town was lost by the inactive court of Emperor Ling of Han!

Thankfully, Liu Wei arrived!

This was the first prefecture-level city he occupied after leaving Yanmen Pass.

After figuring out the locations of Daihai Lake, Qingshui River, and Shanwu City from the fishmonger, a bold idea sprouted in Liu Wei's mind.

"Yang Yi, quickly go and invite Captains Xue and Liu to come to my place for a meeting!"

Yang Yi immediately went there.

"M-Sir! May I leave now?"

The fishmonger not only made money selling fish, but now he also received a silver ingot worth about ten taels, and he was so happy that he couldn't stop smiling.

He wanted to hurry home to tell his mother the good news, and prayed to Buddha and the gods that he had met a good person.

In addition, he was thinking of leaving immediately, fearing that Liu Wei might change his mind.

He could tell that this fair-skinned young man was definitely an extraordinary figure.

"I'm afraid you can't leave!" Liu Wei chuckled.

"ah!"

The fishmonger immediately knelt down and begged for mercy, but Liu Wei ignored him and instead had Xiao Guizi take out another ingot of silver.

"Stay and ask some more questions, and you'll get a tip."

The fishmonger's eyes widened, and he swallowed hard: "Then I'll reluctantly stay a little longer, just a little longer!"

After saying that, he hurriedly snatched the silver from Xiao Guizi's hand and looked at it with a look of surprise.

Just as Xiao Guizi was about to scold him, Liu Wei smiled and stopped him.

Before long, Xue Rengui and Liu Du arrived in a great hurry.

The military conference had just ended, and the two hadn't even returned to their own camp when Yang Yi and the other guards stopped them, saying that the Marquis had summoned them on urgent business.

The two of them naturally dared not delay and rushed over immediately.

Only Liu Wei, Xue Rengui, Liu Du, and the two guards Guo Luoyang remained in the room.

Xiao Guizi led the fishmonger out.

What we're about to discuss are military secrets.

"Guo Luo, bring me the map!"

After a surprise attack on Fuluo and the capture of Shanwu City, Liu Wei had Guo Luo and other guards find not only the land and population register of Dingxiang County in Shanwu's treasury, but also a map of the four counties of Yunzhong.

Although very simple, it marked the mountains, rivers, passes, roads, and approximate locations of the four counties in Yunzhong.

However, this was drawn up through the hard work of the Han officials who had previously served in these four prefectures.

They traversed countless mountains and deserts to create this map.

However, the Southern Xiongnu people had no idea of ​​the importance and value of this thing.

The gold, silver, money, and grain were all looted by Yufuluo, while the map was left like waste paper in a corner of the storeroom, covered in dust.

When Liu Wei obtained this map, he treasured it as if it were a priceless gem.

In his past life, he had once traveled extensively in this area on a shoestring budget.

I started from Lanzhou and drove around the Yellow River, following its bends.

Helan Mountain, Hetao Plain, Daqing Mountain, Yin Mountain, Sule River, Genghis Khan Mausoleum...

After transmigrating, he was tasked with recovering and managing the four prefectures of the northern frontier.

He had long wanted to draw a map of the four counties in the clouds.

The map we have obtained from Shanwu City, though crude, is a valuable reference.

This map shows the approximate locations of the four prefectures in Yunzhong, the locations of their capitals, and the important mountains and rivers.

When Guo Luo spread out the map in front of the three of them, Xue Rengui had a vague feeling that Liu Wei must have some grand plan.

He stood quietly to the side, waiting for Liu Wei to make his move.

Liu Du, however, was oblivious to the situation, his mind preoccupied with how to get his sister into the Marquis's bed as quickly as possible.

"Gentlemen! I've come up with a way to wipe out the Xiongnu army, ensuring they never return!"

Xue Rengui and Liu Du were startled.

Liu Wei just gathered everyone to devise a method to deal with the Xiongnu, but to no avail. They can only conduct a city defense battle for now.

Who would have thought that with this turn of events, Liu Wei would come up with a solution on his own.

Liu Wei excitedly spoke to the map!

"Look, this is Shanwu City, and this is the Clear Water River!"

"But this place is Daihai!"

"Daihai is located in a high mountain valley, while Shanwu is beside a river valley. The altitude of Daihai is actually several hundred meters higher than that of Shanwu!"

What is altitude? What is a meter?

Everyone was completely dumbfounded!

They couldn't understand a word the Marquis was saying!

Seeing the bewildered expressions on Xue Rengui and Liu Du's faces, Liu Wei realized that in his excitement, he had blurted out a modern term.

So they gestured and compared the approximate locations of Shanwu City and Daihai on the map, which finally made the two understand.

"Does my lord mean to flood Shanwu?"

As expected of the second-generation military genius of the Tang Dynasty, Xue Rengui immediately understood what was going on after Liu Wei gave him a brief explanation.

My dear reader, there's more to this chapter! Please click the next page to continue reading—even more exciting content awaits!