The air force surprise attack was successful, but it could not be occupied.

The next siege of the city still needs King Ning's soldiers and horses to execute.

Uszang's army was already miserable, and after this battle, there were heavy casualties, and the king of Lianhua also died in the melee, and those who survived either surrendered on the spot or fled in all directions, and there was no resistance.

King Ning's soldiers and horses easily penetrated into the hinterland of the plateau, and since then, Wusizang has completely conquered the territory of the Ming Dynasty, rather than a territory worthy of the name.

Yu Qian and the Academy of Sciences and others have returned to Beijing and returned the holy decree.

Zhu Qizhen was overjoyed, and immediately gave Mei Chun a three-grade Yulinwei commander.

These days, he has thought clearly about merging Yulin Left Guard, Yulin Right Guard, and Yulin Qianwei into Yulin Battalion, and changing the Kong Ming Lantern Research Institute of the Academy of Sciences to the Aerodynamics Research Institute, which is under the Yulin Battalion.

Since then, the first air force unit of the Ming Dynasty has been established.

Belin and the others also rewarded each of them for their merits, and all the researchers who went on the expedition were each rewarded with a flying fish suit.

"Your Majesty, why are you so happy?"

Queen Qian saw Zhu Qizhen grinning non-stop, and knew that there must be some happy event.

"Haha, haha......"

Zhu Qizhen smiled even more happily, and then said: "The little Kong Ming Lantern is worth thousands of troops!" ”

Queen Qian was a little puzzled and asked, "What...... Kong Ming lantern? ”

"The queen doesn't know, the Academy of Sciences has made immortal achievements this time, which is really a blessing of the Ming Dynasty!"

Queen Qian still didn't understand, but she didn't ask any more, but ordered: "Zhen'er, go and bring the ginseng soup." ”

"Yes, Queen!"

Wan Zhen'er cautiously came over with a bowl of ginseng soup and said respectfully: "Your Majesty, this is the ginseng soup made by the mother herself." ”

Zhu Qizhen took it, looked at Wan Zhen'er, seemed to think of something, and said, "Your two younger brothers ......"

Poof!

Before the words fell, Wan Zhen'er had already knelt on the ground, leaned over and said, "The slave begs the emperor for forgiveness!" ”

"Don't worry, the two of them...... Actually, it's nothing, it's all clear. ”

Wan Zhen'er's two younger brothers bought some saltpeter sulfur privately, although these things belong to the controlled category, but they are not strictly controlled by the people, and they are only prohibited from large-scale transactions.

For example, there is sulfur in the pharmacy, and as for saltpeter, there are many stone factories.

Jin Yiwei found out the ins and outs of the matter, and found that the two brothers of the Wan family actually didn't have any special channels, but they just heard from their sister that His Royal Highness the Crown Prince needed this thing, so they tried every means to get it.

As for what His Royal Highness the Crown Prince is going to do, they don't know at all.

"Thank you for your kindness, thank you for your ......"

Wan Zhen'er was surprised and delighted, and couldn't stop wiping her tears.

"What are you crying about, I just told you, it's all right, get up!"

Zhu Qizhen waved his hand, and Wan Zhen'er slowly got up.

"Tell me, how is the Queen's body these days?"

Wan Zhen'er wiped away her tears and said: "Back to the emperor, the queen's body is recovering very smoothly, but the decoction of the Tai Hospital still has to be taken for a period of time to prevent the recurrence of the old disease." ”

Zhu Qizhen nodded, looked at Queen Qian again, and asked, "What does the queen think?" ”

Queen Qian smiled and said, "The concubine also feels very relaxed, and she came to the menstrual period yesterday, but there is no abdominal pain anymore." ”

"yes, that's great!"

Zhu Qizhen smiled again on his face and said, "Then the queen should rest early!" ”

"Concubine...... It's not as good as ...... if it's inconvenient."

Empress Qian hesitated for a moment, and then said, "Let Zhen'er serve the emperor and go to bed." ”

When Wan Zhen'er heard this, her face was red to the base of her neck, and she lowered her head and didn't know what to do.

Zhu Qizhen shook his head with a smile and said, "I'm a little tired today, so I'll go to sleep first." ”

Speaking of which, Wan Zhen'er can be regarded as a flower and a moon, but this woman ......

For some reason, it is not suitable......

Early the next morning, Belin and Tong Xuan hurried over.

"Your Majesty, the phone number you said has been made!"

"yes, where is it, let me see!"

Zhu Qizhen suddenly became interested, when Tong Xuan made out the electric light, he drew a drawing of the telephone, but he didn't expect it to come out so quickly.

Tong Xuan took a bag from behind his back and said, "The minister brought something!" ”

When opened, inside are two cylinders, connected by copper wires in the middle.

Zhu Qizhen took a general look, which was similar to what he imagined.

"Let's go, let's try!"

The monarch and the ministers came to the imperial study and left one microphone inside, and then Tong Xuan walked out with another one and closed the door.

Actually, this thing is not a real phone, at best it is called a microphone.

Tong Xuan was also puzzled when he got the drawings, since he didn't answer the phone, why did he call the phone?

In fact, Zhu Qizhen is used to calling it, and the telephone is designed according to the principle of microphones.

Just when Tong Xuan was in a daze with the drawings, a student from the Electric Power Research Institute suddenly said, isn't this the listening man in Mozi's book?

When Tong Xuan heard this, he immediately went to find Mozishu, and after flipping through it, he found relevant records in the "Preparation of Acupoints".

It is roughly a kind of jar with a small mouth and a large belly, which is buried in the ground when used, and a thin layer of leather is covered on the mouth of the urn, and when there is a need for detection, you can listen to the surrounding movement by leaning your ear on it.

If necessary, even a professional intelligence officer can sit in an urn and listen for the sounds.

Sometimes, in order to reduce intelligence errors, blind people are often trained to carry out missions. Because blind people's hearing is often stronger than ordinary people, movements within a radius of tens of miles can be heard through the listening urn.

Tong Xuan was inspired to continue to read ancient books, and soon, he saw a similar record in the Song Dynasty's Shen Kuo's "Mengxi Bi Tan", but it was no longer called listening to Weng, but was called disobedience.

This is a special quiver that is mainly used to detect the enemy on the battlefield.

When you need to eavesdrop, take out the arrow, blow your breath, and pill it under your head at night, and you can hear the sound of people and horses within a few miles.

In addition, similar devices commonly used by the folk include "listening tubes", which is how the so-called "walls have ears" come from.

It's just that these devices are separate, and no one has ever thought that two listening tubes can be connected.

After Tong Xuan sorted out the records of the ancients, and then according to the drawings provided by Zhu Qizhen, he quickly made the first microphone.

The two earpieces are connected with copper wires, and the copper has a strong ability to conduct sounds, and you can hear it clearly from afar.

Zhu Qizhen patted the microphone, and then in his ear, after a while, Tong Xuan's voice came: "Your Majesty, can you hear it?" ”

"Hear, can you hear me?"

"The minister can hear it too!"

"Very well, come back!"

Tong Xuan took the microphone back to the imperial study, and then saw Zhu Qizhen flipping out a drawing.

"That's the real phone!"

Belin only glanced at it, then frowned.

Tong Xuan was puzzled, took two steps forward, and then saw the dense parts and annotations on the drawing.

Look at the "phone" in your hand again, it seems to ...... It's not the same thing at all!