"Bang bang..."

Just at this moment, several loud noises were heard outside, and a chamberlain entered the hall: "Your Majesty, the fireworks have started. Do you want to go and see them?"

Yang You's eyes shone with light, and his expression was about to move. He looked at Li Yuan's position habitually, but it was empty, and then he remembered that Li Yuan had resigned.

So, Yang You looked at Li Jiancheng.

Li Jiancheng stood up and said respectfully, "Your Majesty, please move."

Yang You then walked out of the palace happily.

Looking at the bright fireworks all over the sky, Li Jiancheng was thinking about his father and brothers who had left the banquet, and unconsciously glanced in the direction of Wude Hall.

"Your Majesty, look quickly, the fireworks are so beautiful."

The charming voice brought Li Jiancheng back from his thoughts. He turned to look at his wife and replied absently: "Well, it looks good."

........

After the smoke cleared, Li Yuan and his son were shocked when they looked at the deep pit that was more than ten feet wide. Then they looked at the dead pit and couldn't help but sigh: "The lethality is really powerful."

Wang Kangda took out the smoke bomb and said to Li Yuan: "The same goes for this smoke bomb. Just pull out the ring and throw it out. It has no lethality. It is just to block the enemy's sight. I don't think there is any need to display it again."

Li Shimin nodded and agreed: "Yes, that's right, let's not waste it."

"Bring me a flying fish bomb." Li Yuan was still immersed in the shock just now. He wanted to study the flying fish bomb, so he stretched out his hand towards Wang Kangda.

Wang Kangda opened the box and pointed it out to Li Yuan: "There is only one of each item, and there are no flying fish bombs."

"Only one of each?"

Li Yuan's eyes widened and he scolded: "Didn't you tell me earlier? I'm not allowed to demonstrate anymore. Just tell me how to operate it."

Really, what a waste of natural resources.

Wang Kangda lowered his eyelids to hide his emotions. Xiao Yu'er was right, he couldn't tell the King of Tang that there was only one, otherwise the effect would not be achieved.

Next, Wang Kangda explained the operation method of the items in the box one by one: "...Actually, there is also a tear gas bomb, but when we retreated, Xiao Yuer used it."

What's even more pity is that their mission ultimately failed.

As soon as he heard the name, he knew what it was used for. Li Yuan was silent and asked: "If these things fall to the ground, will they explode on their own?"

"No, these are improved. They will not explode on their own if dropped on the ground. Only the pull tab can make it explode. There is still a short reaction time." Wang Kangda recalled the scene in Jizhou and added: "

However, the pre-improved Exocet bombs did explode when dropped on the ground, but now they don’t and are very safe.”

Li Yuan showed a clear expression: "Okay, follow me back to Wude Hall."

The group returned to Wude Hall, Li Yuan dismissed the servants, leaving only Li Shimin and Wang Kangda in the hall.

Li Yuan remembered the previous arrangement and asked, "Xiao Yu'er and that Wang Fubao sent you all the way out of Hebei. Didn't you meet Yang Mao?"

"No."

"On the way back to Chang'an, we didn't meet him either?"

"No."

Li Yuan's face darkened. It seemed that Yang Mao was in trouble.

Li Shimin asked tentatively: "Did Aye send someone else to pick up Xiao Yu'er?"

"right."

Li Yuan nodded: "After I received the news, I sent Yang Mao and five hundred people to meet Xiao Yu'er."

Five hundred people?

Wang Kangda's expression flashed. If they had added five hundred more people that day, they should be able to take Lin Zhiwu out of Hebei, right?

"Xiao Yu'er, what else can you give me?"

Wang Kangda immediately took out two letters from his arms and presented them with both hands: "Xiao Yu'er wrote two letters, one is for you, the king of Tang Dynasty, and the other is for the eldest grandson."

Li Shimin went up to get the letter, flipped through it, and found that there were really only two letters. He frowned and asked, "Isn't there a letter for me?"

His tone was slightly complaining. Wang Kangda suspected that he had heard wrongly and answered honestly: "No, only a letter to the King of Tang and the eldest grandson."

Li Shimin glared at him, turned around and walked towards Li Yuan.

Wang Kangda was a little confused by that look. Xiao Yu'er only wrote two letters. What does it have to do with him?

Even if you stare him to death, he can't change the third letter.

Li Shimin presented both letters to Li Yuan, but Li Yuan only took the one that belonged to him: "Take back the letter to the Changsun family."

"Yes." Li Shimin stuffed the letter into his arms and stepped aside.

Li Yuan opened the letter and read it.

"...Aye must have known that Lin Zhiwu is not an ordinary young man. Such talents must be used by Aye. Although the first operation failed, we did not gain nothing. I believe that Aye has received my request.

The people sent back the drawings and weapons.

"I overheard a piece of news that day. Yang Guang privately sent an envoy to send a letter to Dou Jiande, inviting him to attend the Shangsi Festival feast. He seemed to have promised something in the letter, but I did not find out the specific content.

"Later I got news from an envoy that Yang Guang not only sent people to contact Dou Jiande, but also sent several envoys to meet with various forces. I wonder if Yang Guang also sent envoys to meet Aye?

"According to my observation, Dou Jiande will definitely attend the Shangsi Festival feast. At that time, I will find a way to go to Luoyang with Dou Jiande, and I will also find a way to get Lin Zhiwu to accompany him, and then take action in Luoyang.

"...Although this operation failed, everyone in the Xuanjia Army helped me and protected me, and they have done a great job. Please do not punish Aye, but reward me..."

Shangsi Festival feast?

Li Yuan closed the letter and thought for a moment. No envoys have come to Chang'an recently. Could it be that the envoys from Luoyang are still on the way?

But why did Yang Guang hold a Shangsi Festival feast and invite all parties to participate?

He thought that people like Li Mi and Liu Wuzhou would definitely not go.

Li Yuan opened the letter and read it again. His eyes fell on a certain part of the letter. What did Yang Guang promise to Dou Jiande? Xiao Yuer said that Dou Jiande would go, which meant that Dou Jiande was attracted by Yang Guang's conditions.

Is it an alliance?

After thinking for a long time, Li Yuan was not sure what Yang Guang was planning.

"Xiao Yu'er thanks you for your merits. I will reward you tomorrow. You can go down first."

Wang Kangda resigned.

Li Yuan suddenly remembered something and asked Li Shimin: "Last time, Xiao Yuer burned down the outer wall of Hedong City with fire. Later, I ordered the walls of counties and counties to be reinforced with bricks and stones. You are responsible for this. What's going on now?"

Li Shimin reported: "In the past few days, various counties and counties have submitted memorials one after another, saying that the city wall has been in accordance with my father's requirements. The outer city wall has been reinforced with bricks and stones, and the outer city wall will no longer be made of stone."

"That's good." Li Yuan glanced at the box and said: "Send the order and all the city walls will be strengthened by three layers on the original foundation."

Li Shimin showed a puzzled expression: "Why is this?"

Li Yuan explained: "This flying fish bomb is so powerful that if there were more of them and the attack was concentrated, it would probably blow up the city wall.

"Of course, our city wall is so thick that it is impossible to blow it up. This is just a precautionary measure."
Chapter completed!