Chapter 485                        

The captain looked puzzled and didn't understand what the purpose of His Highness was to do this himself.

He asked carefully: "Your Highness, is this?"

Li Yu continued: "After digging the pit, bury the water tank, do not add water or fill the soil, and send someone to guard it. For twelve hours a day, there must be people watching the movement at all times!"

Dig a hole under the wall of the city wall, bury the water tank, and then listen to the movement inside?

What's going on in the water tank?

The captain did not understand Li Yu's intention at all, and wanted to ask. Jinwu scolded impatiently: "Your Highness will do whatever you ask you to do, where did you come from nonsense?"

"Yes! I obey the order!"

The captain did not dare to say more, and quickly intervened to take the order.

Li Yu pointed to the city wall and said, "Every five or six steps, you will dig a hole and bury the water tank and send a dedicated person to guard it. No omissions are allowed!"

"Yes! Your Highness!"

Li Yu explained it, and then returned to his residence.

On the way, Jinwu asked curiously: "Your Highness, why do you dig a hole and bury a cylinder on the ground?"

Although he had just scolded the captain seriously, he actually didn't understand Li Yu's intentions, and he was also full of curiosity.

Li Yu said: "I am worried that the Xifan Army will secretly dig out the secret passage leading to the city in the camp!"

The feint attack and harassment of the Xifan Army is likely to be a cover for them to secretly dig secret passages!

Li Yu really couldn't think of the purpose of the Xifan Army moving forward to the camp, and he was always a little uneasy inside.

Just now, a flash of inspiration flashed in his mind and suddenly thought of the problem of digging the tunnel.

He vaguely remembered that in a war abroad, the attacking party relied on digging tunnels and buried a large amount of gunpowder under the city wall, thereby blowing down the city wall.

In China, there have been many cases where attacking parties could not capture for a long time and eventually sneaked into the city by digging tunnels.

In ancient and modern times, both at home and abroad, there are so many examples of attacking parties winning by digging tunnels. Could it be that the current Xifan Army will not do this?

It was precisely because of this that Li Yu asked the soldiers to lay a water tank under the wall of the city wall and sent a dedicated person to listen to the news.

As long as the Xifan Army really digs a tunnel, the water tank buried underground will become a loudspeaker, which can be used to warning in advance to prepare one side.

Li Yu returned to his residence. This time he only sat on the bed for a while, and his tiredness came. He fell backwards and then fell asleep.

The next morning.

When Shen Fangzhuo came to the North City Wall, he saw that under the city wall, he buried a water tank every five or six steps.

And next to each water tank, a soldier lay on the ground and listened with his ears on his back.

Everyone looked puzzled, Shen Fang frowned and asked, "What's going on?"

The captain who received the order from Li Yu last night rushed forward, interfered in salute to everyone, and said, "Duke Xunguo, generals, these are all arranged by Your Highness!"

What did your Highness arrange?

What's the use of burying so many water tanks?

Receive rain?

Huaian City, which is backed by Qinhe, is the most inseparable from water!

Liang Ping frowned and said, "It's just a mess!"

Shen Fang walked to a water tank, and he lay directly on the ground and listened with his ears.

After a moment, a flash of inspiration flashed in his mind, and an expression of sudden enlightenment appeared.

He smiled knowingly and said to Liang Ping: "Duke Xunguo misunderstood Your Highness this time, Your Highness is not making a fuss!"

Liang Ping looked puzzled and asked, "What are the uses of these water tanks?"

"It can prevent the enemy from digging tunnels into the city!"

As soon as he said this, everyone present changed their faces.

People gathered around the water tank and looked closely.

A general whispered suspiciously: "Can these water tanks prevent the enemy from digging tunnels?"

Chen Fang shook his head and said, "I can't help but be warned in advance!"

If the Xifan Army digs tunnels under the city, as long as it digs deep enough, it will be difficult for the people on the ground to hear it.

But after burying these water tanks, it is different. The movements and stillness of the ground can be amplified by the water tank more than ten times, or even dozens of times.

Even if the Xifan Army digs the tunnel deeper, it will be able to notice it immediately.

Everyone was stunned for a moment, and all showed a sudden enlightenment.

The generals couldn't help but sigh, "Your Highness is smart and extremely intelligent!"

Liang Ping was also full of surprise.

Is this still the seventeenth prince Li Yu he knew?

When did he become so smart and knowledgeable that he could even think of this method?

After Li Yu got up in the morning, he danced the magic-destroying sword technique several times as usual.

While he was practicing swords, Jinwu came over.

Li Yu smiled and slashed at the golden crow several times.

Jinwu first quickly retreated, and then pulled out a Mo knife from the weapon stand beside him and fought with Li Yu.

The two of them went back and forth, and the sound of iron tools colliding continuously.

When Jinwu practices for Li Yu, he often has to use more than 50% of his skills. Otherwise, he will not be able to resist it, and Li Yu will be unhappy.

The two of them had a sweat for dozens of rounds. Li Yu put away his knife. He took the hand towel handed over by Jinwu, and asked while wiping the sweat, "What's the matter?"

Jinwu quickly inserted Mo Dao back on the weapon rack and intervened to Li Yu and said, "Your Highness, Prince Amro, Princess Amani, please see you!"

Li Yu blinked and roughly guessed what they were about.

He said, "Let them go to the lobby and wait for me."

"Yes! Your Highness!"

The golden crow walked away quickly.

Li Yuze went back to the room to wash up, dressed neatly, and went to the lobby to meet Amro and Amani.

After meeting, Amro and Amani bowed to Li Yu together and said, "Your Highness the King of Wu!"

Li Yu waved his hands to the two of them and signaled that they would not give up the gift. He asked with a smile: "You two came to me early in the morning, what's the point?"

"I would like to go to Wanguo with Your Highness!"

Amro spoke first.

Amani then said, "And I am!"

Li Yu smiled and looked at the two of them and asked, "Do your two fathers agree to this matter?"

The brother and sister looked at each other without saying a word.

Seeing this, Li Yu shook his head helplessly.

He knew that Shalp would not agree to this matter easily, and the old king was reluctant to take risks with his beloved son and daughter's life.

Li Yu said seriously: "If you two want to follow me to Wanguo, you must fight for the consent of King Shalp! If King Shalp does not nod and agree, I can't do anything!"

"Your Highness..."

"Okay! No need to say more!"

Before he finished speaking, a shadow guard suddenly appeared at the door, intervened and bowed to Li Yu, and said, "Your Highness!"

Li Yu turned around and looked over.

I saw the shadow guard wrapped in a black robe from head to toe, and his wide robe also covered most of his cheeks.

Others could not see clearly what he looked like, nor could they see clearly what clothes he was wearing inside.

It can be said that as long as the Shadow Guard took off the black robe outside and sneaked into the crowd, even Li Yu could not tell who they were.
Chapter completed!