.

"Qi...Qi Bing Father, this reading glass has nothing to do with Li Jijiu, but was offered by a sorcerer. After the man gave him some lenses, I asked Li Jijiu to find someone to polish many lenses." Princess Pingyang whispered with a red face. She had never lie to Li Yuan since she was a child. This was the first time she felt very awkward.

Seeing his daughter's appearance, Li Yuan could not guess that she was lying. And based on his understanding, it was probably because Li Xiu didn't want the credit, so he forced it out. This was not the first time he did this, but he didn't expect that he could convince his daughter to lie for him this time, which also made Li Yuan a little angry.

But no matter how angry he was, when he looked at the clear picture in front of him with his glasses, Li Yuan couldn't help but be impressed by Li Xiu's talent. This young man seemed to have endless novel ideas and knew many things that others didn't know. Sometimes even Li Yuan wanted to know where he learned these things?

In fact, not only did Li Yuan see that Princess Pingyang was lying, but even Li Chengdao next to him also saw that, and he was sure that this reading glasses must have been created by Li Xiu, because he remembered that when he visited him that day, he and a beautiful little girl were playing with these lenses, but he didn't expect that these lenses would have such a purpose.

"Dao'er, go out first. I have something to talk to your aunt!" Li Yuan thought for a while, and finally suddenly spoke to Li Chengdao.

"Ah?" Li Chengdao looked unwilling when he heard this, because his grandfather had not given the answer to his request to go out to study with Li Xiu, but now he wanted to drive himself away. However, he did not dare to disobey his grandfather's orders. He had to agree in a depressed manner and turned around and left.

After watching Li Chengdao leave, Li Yuan waved his eunuchs and palace maids in the hall, then looked at Princess Pingyang for a while, then sighed and said, "Sanniang, we father and daughter have not chatted for a long time. You sit down and chat with your father for a while!"

Princess Pingyang was stunned when she heard her father's words, then agreed to sit beside Li Yuan. Before he could speak, Li Yuan took the lead and said, "Sanniang, what do you think of Li Xiu?"

"Why did my father ask this question?" Princess Pingyang said worriedly when she heard this. She also knew that her father must have seen through the lying she had just said. She was not afraid, but she was worried that he would blame Li Xiu.

"When my father first heard of the name Li Xiu, he was because of a woman who went out of the house. Later, he offered wound suture and healed your wound. However, he beat Chai Shao again. I didn't have a good impression of him, but at the banquet on the Lantern Festival that day, he successfully showed his literary talent, which made me admire him."

When he said this, Li Yuan suddenly paused for a moment before continuing: "But he is very strange. He seems to be really unintentional to fame. He doesn't want the credit for designing a water truck last time, and he doesn't want the credit for reading glasses this time. Some time ago, Erlang offered a plan to split the Turks and this time to guard against Tuyuhun. He is behind him. I planned to give him a reward, but I didn't expect that he would enter your mansion as a priest. Although he is a fifth-rank official, he is a false title, which makes my father very confused."

"Father, Li Xiu's idea is actually very simple. He is really unwilling to be fame and fortune, but he also has a heart of worrying about the country and the people. So when the court encounters some difficulties, he can't help but do things within his ability." Princess Pingyang explained with a smile. After spending time together, I'm afraid no one knows what Li Xiu thinks better than her.

"It's that simple?" Li Yuan asked back with obvious disbelief. He had seen all kinds of people, but he had never seen people like Li Xiu. Although some people claimed not to be fame and fortune, most of these people were people who were seeking fame and reputation, and few people like Li Xiu who really didn't do fame and fortune, and even avoided fame and fortune.

"Li Xiu is such a simple person. My daughter can guarantee this with her life!" Princess Pingyang said with certainty, and was even willing to guarantee her with her life. This made Li Yuan stunned, and the eyes of her daughter also looked at her inexplicable.

"Sanniang, Dao'er came to me just now and asked me for something, but I was hesitating just now whether to agree to him, please help me think about it!" Li Yuan suddenly changed the topic at this time.

"What makes my father hesitate so much?" Princess Pingyang said curiously when she heard this.

"Haha, actually, this matter is also related to Li Xiu. Chengdao saw Li Xiu at your place a few days ago and was impressed by his knowledge, so he clamored to go to your place to ask Li Xiu for advice. Your elder brother disagreed, and he ran to me." Li Yuan explained with a smile. In fact, he was planning to reject Li Chengdao just now, but after what happened just now, he suddenly changed his mind.

"Let Dao'er ask Li Jijiu for advice?" Princess Pingyang's eyes lit up when she heard this, and she nodded immediately and agreed, "This method is good. Li Jijiu is knowledgeable and talented. And I saw that he and Dao'er were able to talk to him that day. If Dao'er can ask him for advice, Dao'er's studies will definitely be of great help!"

In terms of love, Li Xiu and Li Chengdao are both closest people to Princess Pingyang. Moreover, Li Chengdao studied with Li Xiu, so she often saw this nephew. Even from the utilitarian point of view, Li Chengdao is likely to be the future prince. Li Xiu can lay a emotional foundation with him and will also enhance his status, thereby making up for the gap between him and himself.

"Haha, I know you will agree. Since that's the case, let Dao'er go to Li Xiu's place to ask for some questions every few days, but you should also supervise more and don't let Dao'er waste his studies!" Li Yuan smiled slightly when he saw his daughter's happy look. Being able to make his beloved daughter so happy is enough to show that the decision he made was correct.

After talking about the main business, Li Yuan and his daughter talked about some family affairs, but at this time, Princess Pingyang suddenly thought of something, and took out a short tube from her arms and said to Li Yuan: "Father, my daughter just forgot to say something. In addition to the reading glasses just now, those lenses have another function, such as this telescope!"

"Typescope? What is this for?" Li Yuan asked in confusion as he looked at the cylinder.

"Hehe, you can tell by the name. This thing is for viewing the scenery in the distance. Father, you can tell by trying it!" Princess Pingyang said, opening the cylinder and taking out the telescope inside. The telescope was designed by Li Xiu himself and divided into three sections and can be contracted, which is convenient for users to carry.

Princess Pingyang pulled the telescope open and adjusted it to make Li Yuan look outside the hall gate. As a result, Li Yuan was shocked at the beginning, and the scenery outside the hall was so clear that he could even see a fly on the back of the guards outside the hall, which was like the legendary clairvoyance.

"It's amazing, this... is this spell?" Li Yuan finally showed a little startled at this time. He and Princess Pingyang are worthy of being father and daughter. The first time he saw a telescope, they all had the same reaction. After all, except for the legendary spell, he really couldn't understand the truth.

"Hehe, I said this like my father at the beginning, but Li Jijiu told me that this is actually achieved by combining two lenses, which can make the scenery in the distance very clear, so it is called a telescope!" Princess Pingyang smiled again. She rarely saw her father's expression so surprised, but she let out a sigh while she was happy and told Li Xiu.

"So that's it. I didn't expect that two small lenses would have such a big effect. If each general in the army was equipped with a telescope, wouldn't it be possible to discover the enemy situation in advance!" Li Yuan also began to be excited at this time. He was a hero who only wanted the result and did not ask about the process. In his opinion, the principle of the telescope was not important at all. What was important was the role of the telescope.

"The father is wise and the daughter thinks the same way. However, pure and transparent water jade or medicinal jade is needed to make lenses. Both of these jades are relatively rare, so they may not be manufactured in large quantities." Princess Pingyang said her worries at this time, and it was not necessary to mention glass, which has been controlled by overseas merchants. As for crystals, during the Tang Dynasty, there was no large-scale mining, and the output was also very rare.

"This is a problem. However, only such thin lenses are needed to make a telescope. Although there are many generals in the Tang Dynasty, everyone does not need to equip the telescope. So first someone collects some materials and creates a batch of rewards to those who have made meritorious generals. This will give full play to the role of the telescope, and can also win the hearts of the generals and inspire other generals to make contributions to our Tang Dynasty!" Li Yuan is worthy of being the founding emperor of the Tang Dynasty. He came up with a way to win three goals from the telescope.

Princess Pingyang was surprised when she heard this, because Li Yuan's words were almost exactly the same as Li Xiu's plan in advance. It seemed that he and his father almost thought of going together, so she immediately nodded in agreement, and then presented the method of making telescopes that Li Xiu had prepared long ago and a simple definition of the degree of lenses to facilitate the Tang Dynasty craftsmen to make qualified lenses.

Until it was getting late, Princess Pingyang accompanied Li Yuan for dinner, and then got up and left the palace and left Chang'an City. However, she did not go to her own courtyard immediately, but took a detour when she went back and went to Li Xiu's place first.

It was already the first time the night lights were on. Li Xiu and Qi Niang had just had dinner. He was about to teach Qi Niang something, but he didn't expect Princess Pingyang to come to visit, so he immediately came to the front yard to greet him. As a result, Princess Pingyang had just talked about her entry into the palace today as soon as she met.
Chapter completed!