Thinking about this, Xu Yuan stretched out his mind and soul to explore the objects placed in the four carriages, but unfortunately, the carriages were engraved with formation patterns, and his mind and soul could not get in.

Xu Yuan frowned and asked softly:

"What's in here?"

"You'll know in a minute." Li Qingyan did not answer immediately, but raised his hand to signal the guard at the door to open the door.

The guard opened the door to the courtyard, and as soon as the two of them walked in, they saw an old man with white hair and a childlike face sitting in the courtyard of the courtyard with his eyes closed and meditating.

After hearing the sound of the courtyard door, Jiang He opened his eyes, stood up and said with a smile:

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"Princess Palace"

Before he finished speaking, he saw Xu Yuan following Li Qingyan. He immediately frowned and asked from afar:

"Tsk, why did you follow me here?"

The old voice had a bad tone.

When Xu Yuan heard this, he pointed at the ground without hesitation and responded directly:

"Hey, this is my home, why can't I come over?"

"You kid."

Jiang He wanted to have a fit, but after looking at Li Qingyan next to him, he restrained his temper:

"Humph, I won't care about you anymore since the princess is here."

Xu Yuan and Li Qingyan walked into the attic, Xu Yuan sat down, and Li Qingyan nodded slightly:

"I've met Mr. Jiang."

"Your Highness, there is no need to be polite."

Jiang He didn't look at Xu Yuan who was carefree at the side, and his tone was very gentle: "Princess, I have already sent you what you want, two coins in a cart, eight coins in total."

Li Qingyan's eyes narrowed:

"Wu Yuan thanked Mr. Jiang."

Jiang He, the wind is light and the clouds are light, the wind is like everyone's, raising his hand to signal to sit down:

"My disciple finished half of this thing and then went on a trip. Time is tight. Even after I took over, I couldn't carve it completely. The formation pattern is not yet stable. The princess must use it with caution when leading the army."

Xu Yuan was listening to the conversation, holding a teacup and drinking by himself, with a strange look in his eyes.

There are weapons in the carriage outside.

New weapons, and very powerful.

But according to Old Man Jiang, this thing was also developed by the fourth sister.

That’s not right.

Although Xu Xinyao is a genius in formations, he has always used his talents to benefit people's livelihood, producing various formations and city defense formations, but he has never made many weapons.

Thinking about it, Xu Yuan suddenly interrupted and asked:

"Hey, Old Man Jiang, does she know that you are using the things Xinyao made for military use?"

Jiang He, who was chatting with Li Qingyan about detailed operations, suddenly fell silent when he heard these words.

Seeing the other party's gesture, Xu Yuan immediately got the answer in his heart.

Got it,

This research result of Xu Xinyao was probably secretly turned into a sword by his master Jiang He.

for a while,

The three people in the attic suddenly fell into silence because of Xu Yuan's question.

When people are touched to a real pain point, they will not make a fuss.

Jiang He lowered his eyes, and his old face seemed even older.

Li Qingyan didn't know the inside story, so he didn't blindly interrupt.

Xu Yuanze felt a little sad in his heart.

No wonder these four sisters chose to travel instead of staying in Gewuyuan.

When an object is invented, it is used by the military.

With the character of the fourth sister, what Jiang He did as a teacher would undoubtedly break her heart.

And this is probably the reason why Xu Xinyao has been unwilling to contact Jiang He

Silence for a long time,

Jiang He looked complicated, but finally ignored Xu Yuan's words and continued:

"Your Highness, sit down first. If you can give me another month, this thing should be completely perfected."

Li Qingyan sat down, stroking the hem of her skirt under her buttocks, and shook her head:

"The war in the north is urgent and can no longer be postponed. Mr. Jiang's ability to produce this thing is beyond expectation, but I don't know how effective it will be?"

Jiang He looked complicated and pointed at the sky:

"At the time of the original experiment, the power coverage exceeded the Imperial Capital."

"Poof"

Xu Yuan squirted out while drinking tea and spread it all over the table.

Can it cover the entire Imperial Capital?

What three-phase bomb?

Li Qingyan and Jiang He unanimously turned their attention to Xu Yuan.

Xu Yuan wiped the corner of his mouth and asked tentatively:

"Can you tell me what it is?"

With this thing, the sect would give a damn.

The military formation can indeed resist. If it can carry one, can it still carry ten?

Just use the nuclear bomb to clear the way and blow it over.

"Yunqitan." Li Qingyan is simple and direct.

Jiang He sighed and explained in a low voice:

"You don't have to be surprised. The so-called covering the Imperial Capital is not a destructive force. The Yunqi bomb was originally developed by Xinyao to deal with heavy rains and floods."

Hearing this, Xu Yuan wiped the table with a handkerchief, and his shock dissipated a lot.

In addition to the plague of monsters and beasts in the Great Yan world, there are also natural disasters similar to those in previous generations.

Some prefectures and counties often face flooding after months of rainfall.

In the past life, science and technology were so advanced that agriculture had to rely on the weather.

In droughts, water can be diverted, but in floods, there is really nothing we can do, except no harvest.

Thinking of this, Xu Yuan asked:

"So this thing is aimed at clouds?"

Jiang He nodded, raised his hand to signal the guards to bring a cube box one meter long and wide, opened it, revealing the round purple crystal inside that exuded bursts of source energy:

"Once this thing detonates, it will generate strong wind pressure and instantly blow away the clouds in the sky. A quarter of the original amount can already cover the entire area of ​​the Imperial Capital."

Xu Yuan glanced at the sleeve arrow tied to his wrist:

"Xin Yao's talent in formation is truly a once-in-a-thousand-year experience. It's a pity."

Xu Xinyao has a good idea.

Clouds full of water vapor will not disappear. Even if they are blown away, they will condense again, but they can also greatly alleviate and disperse rainfall.

However, after Jiang He's military transformation, this Yunqi bomb was perfectly suited for military operations in the north.

Now that the northern border is frozen for thousands of miles, the barbarians have used the people and weather to adapt to the blizzard to launch a massive counterattack.

If Wu Chenghou and Zong Qingsheng could use this thing, it would probably be a decisive blow to the barbarians in the north.

It seems that the emperor and the father really intend to completely resolve the war in the north before the Jiantian Pavilion's mission arrives in the imperial capital.

Xu Yuan did not interrupt the discussion that followed. Jiang He detailedly explained to Li Qingyan how to activate the "Yunqi Bullet" and some precautions.

A quarter of an hour later,

Li Qingyan slowly stood up:

"Thank you very much Mr. Jiang this time. When I return to Beijing next time, I will definitely stop by to say thank you."

Jiang He also stood up when he saw this:
To be continued...