Royal Palace.

After the notice, Cheng Yaojin and the other three met His Majesty together. Old Cheng Xianbao said, "Your Majesty, I have a treasure."

"Zhijie, but what treasure blade has been found?"

Li Shimin got used to the old Cheng's whispering temperament and didn't care too much, so he asked casually.

In his opinion, it was nothing more than swords, swords and other weapons. After seeing them a lot, there was nothing new. There were countless royal treasure houses, and they had to be assigned to provide special personnel for maintenance, otherwise they would probably be rusted.

Seeing that Li Shimin was not at ease, Cheng Yaojin said seriously: "Your Majesty, this time it is not a weapon, but a new treasure of Fang Boy."

"oh?"

Fang Yiai has already labeled "Fang Yiai produces it, it must be a fine product". Now Li Shimin became interested, raised his eyelids and looked at it carefully.

"What?"

Cheng Yaojin carefully took out his telescope from his arms, and presented it with it, "It's this - the telescope."

Fang Yiai never thought that Lao Cheng, a rough man, could be so careful, I'm afraid he would never be so careful with his own son.

Thinking of this, he turned to look at Cheng Chumo, feeling sad for Cheng Chumo, feeling that he was the old Cheng's own son.

Seeing Fang Yiai's gaze, Cheng Chumo returned an inexplicable look and asked him what he meant? Fang Yiai patted his shoulder to show comfort.

Ahead, the topic of the two big guys is still continuing...

Seeing Old Cheng's attitude, Li Shimin's expression was a little serious. He knew that Cheng Yaojin was so thick that he was fine. His attitude was probably not an ordinary thing.

He was also thinking about it.

This name sounds novel, but it is not surprising. Fang Yiai has created something new, so he always makes some weird things. "Types?"

"But... can you see something far away?"

Li Shimin's eyes lit up and he thought excitedly.

"Hehe, Your Majesty is really aware of it. My old Cheng didn't expect it at that time, and it was pointed out by the boy from the house." Old Cheng smiled and flattered.

After confirming his thoughts, Li Shimin was excited and showed his decisive side. He immediately picked up the telescope and headed up the city tower.

Up the city tower.

Looking down at the entire Chang'an City, it's so spectacular.

"How to use this thing?"

Li Shimin was afraid of making a fool of himself, so he did not try it randomly, so he asked Cheng Yaojin. Cheng naturally knew everything and went up to teach Li Shimin himself, "Your Majesty closed one eye first. If it doesn't work, you can cover it with your hands..."

Upon hearing this, Li Shimin immediately closed his eyes, and Lao Cheng did not say nonsense anymore, feeling depressed: "Why is it so easy for others!"

Of course he did not stop moving, and then said, "Put your eyes on the small one and look carefully at the scene in the mirror."

Li Shimin did as he said, then his whole body was shocked, his eyes emitted a strange light, and he stared at the eyepiece, as if he could see the entire Chang'an City, and his heart was surging.

"Okay, okay! This telescope is indeed well-known, and you can see it thousands of miles away, haha..." Li Shimin stroking his hands and laughing, very satisfied with the glass.

Then, he looked at Fang Yiai again, "God blessed me, the Tang Dynasty, gave birth to a person like Yiai You. With this thing in hand, my Tang army will be invincible."

Fang Yiai looked humble and said, "Your Majesty is a mistake! I am just putting some meager strength in the Tang Dynasty."

"Good! What a innocent heart!"

Li Shimin was relieved and was very satisfied with Fang Yiai's answer. Then he talked about the main business, "Can this thing be mass-produced?"

"Yes! The Qingque on the village is watching, and is vigorously building it. It is expected to create a batch of people before the Chou Niu goes to war, and the senior management of the army will install it." Fang Yiai nodded and said.

But as Fang Yiai said, during the time he got married, he produced a lot of lenses, and the polishing technology had already been done. The lenses had been polished and just need to be debugged and assembled.

“Great kindness!”

Li Shimin was happy, and only heard Fang Yiai continue, "Your Majesty, this group of ministers can provide free of charge, but the telescopes in the future will have to be paid for by the court, and the ministers cannot always pay for the money."

"Don't worry, the court cannot treat you badly."

This is indeed the question. Li Shimin agreed and then looked at him suspiciously and asked, "How much do you want to sell this thing?"

"Just two sects..."

"What?"

Li Shimin felt that he had heard it wrong and scolded him. Fang Yiai looked aggrieved and explained: "Your Majesty, this lens barrel is made of brass..."

"I don't think it takes half a penny of money."

"There are two glass mirrors on it..." Fang Yiai continued.

Before he could finish his words, Li Shimin kicked over, "This glass is burned with sand, how much money can it be worth! You dare to ask for two jin!"

Since the lime omission, Li Shimin has been paying attention to all the movements of the slums. Although he does not know the detailed steps, he still understands the general direction.

Fang Yiai gritted her teeth and said with a painful face: "Then it's always the same!"

"Half a penny! No more!"

Lao Li didn't look at his expression, and bargained in half again, with threatening in his eyes. Fang Yiaixin thought he would make a profit, so he could only compromise and nodded, "Okay, I'll make some hard money."

...

A few days later.

It was the day when Cheng Chu went to war.

He had a telescope hanging on his chest, which was installed in a leather tube to protect the lens.

Li Shiming took the last look glass for granted for himself. The one on Cheng Chumo was a newly created batch. Zhang Daliang, the governor of Liangzhou, also had one on his chest, all of which belonged to the same batch.

Yes, Cheng Chumo served as the captain of Liangzhou, and his superiors were the general manager of all military affairs, and Liangzhou Governor Zhang Daliang.

The personal soldiers around Cheng Chumo were all retainers of the Cheng family. They followed Lao Cheng to fight on the battlefield. They were loyal to the Cheng family and would definitely be fully responsible for him. With Zhang Daliang's care, there was little chance of something happening.

But even so, Cheng's mother Cui's eyes were red and swollen, but it was unlucky that he did not cry in front of others.

My son is worried about his mother, after all, Cheng Chumo is on the battlefield...

Cheng Yaojin was very supportive. None of the disciples of the generals were fought for their own lives. If they wanted to make achievements, they would fight on the battlefield. This was their fate.

Lao Cheng's arrangement this time has a different meaning.

Now that the Turks have been destroyed, the biggest enemies of the Tang Dynasty are Tuyuhun and Goryeo. Tuyuhun invades the borders all year round, and the court will deal with him sooner or later, and there will be more opportunities.

Since the last incident, Cheng Chumo's desire to make achievements, Li Daliang happened to be the governor of Liangzhou, and Lao Cheng immediately arranged for him to follow Li Daliang to Liangzhou.

Now Cheng Yaojin and his generation have achieved success and are beginning to consider cultivating the next generation to ensure that the family business lasts forever.

Therefore, Cheng Chumo went on a battle this time to gain a future for himself and a future for the Cheng family.
Chapter completed!