Didn't Pei Xingjian escort the Persian prince back to Persia in the first half of the year, Persia already has a relatively mature process of making glass, let Li Zhi or Wu Zetian edict to ask the mud master who went back to succeed to the throne to send some craftsmen over to teach the manufacturing process, can the new Persian king who still has the post of General Zuo Wuwei of the Tang Dynasty disagree? With glass, many things that are less useful can be made, and in the future, it will definitely be possible to make optical glass that can be used on telescopes, and in any case, telescopes made of high-quality optical glass will definitely be better than those made of crystal.

Liu Yi also couldn't understand why the craftsmen of Datang couldn't make glass since there were already glass products on the market? It stands to reason that the level of productivity, science and technology, and manufacturing level of Datang are much more advanced than that of Persia in the far northwest, why is the process of making glass inferior to others? At least Liu Yi knows that in Chang'an and Luoyang, there is no workshop for making glass, and it is the first time Liu Yi has seen glass making for sale in the market.

"Shopkeeper, do you know how this glassware is made?" Liu Yi stared at the store and asked.

After hearing Liu Yi's question, the shopkeeper looked alert, "What is the guest officer asking for?" ”

"This glass plate is too rough to make, I think it would be better to make some improvements in the production process!" Liu Yi's eyes were still staring at the shopkeeper.

Although the shopkeeper was a little unhappy in his heart, he didn't dare to get angry in the face of Liu Yi's compelling eyes, "This guest officer, I'm really sorry, the process of making glass is a secret recipe that is not passed on, don't say that I don't know, even if I do, I can't tell you!"

"That's a pity!" Liu Yi pretended to have a regretful expression, shook his head and sighed, "My ancestor also has some experience in this area, and I want to communicate with the store!"

"Then why don't you buy this thing back and study it carefully?" The shopkeeper looked at Liu Yi who couldn't put down this glass plate, and finally couldn't help it, urging Liu Yi to buy it.

"The craftsmanship of this thing is still a little worse, if the store has more glassware in better condition, I'll take a look again!" Liu Yi put down the glass plate. also pointed out to the store in detail a big problem in the production of this plate, and said that the shopkeeper was colorless, and almost wanted to give Liu Yi away in vain.

Shangguan Wan'er, who was listening from the side, also looked surprised, but she didn't open her mouth to ask.

"Yi'an, how can you be so proficient in this glass thing?" Out of the store, Shangguan Wan'er finally couldn't help it and asked Liu Yidao quietly.

Liu Yi smiled and said: "Didn't I tell you, my son knows astronomy, geography, hundreds of years before and after, in my heart, how can I not know this little thing!"

"Hmph, you always say such big things to prevaricate me!" Shangguan Wan'er snorted unconvinced.

"To be honest, you don't believe it either," Liu Yi didn't explain anymore, and pulled Shangguan Wan'er to the city again.

Shangguan Wan'er leaned on Liu Yi's side and whispered: "This glassware is also available in the palace, the condition is better than this, it is a very valuable thing, once a palace maid accidentally broke one, was punished with a cane twenty times, and was almost killed!"

"Oh! Also in the palace? Liu Yi replied casually, there are such things in the palace, but I don't even know, it seems that the glass thing has not attracted the attention of anyone in this era, and I have to rely on myself.

Seeing that Liu Yi stopped talking, Shangguan Wan'er didn't say any more, her eyes were once again attracted by all kinds of novelties in the market, let go of Liu Yi's arm, and rushed between the shops like a little girl.

Liu Yi had a few more things in his hand, and the money in the money bag decreased accordingly.

Liu Yi couldn't bear to brush Shangguan Wan'er's interest, and he has been accompanying her to go shopping, ancient and modern girls still have the same surname, they all like to go shopping, and they are not afraid of getting tired when they go shopping, Liu Yi is very emotional.

Lunch was also eaten casually in the city, Shangguan Wan'er ate very economically, and most of the time she watched Liu Yi gobble up there with great interest, and Liu Yi didn't care.

Seeing that the head was about to tilt westward, the two had been shopping in the city for a long time, Liu Yi said to Shangguan Wan'er, who was still shopping with great interest: "Wan'er, let's go back, it's not early!" It's really bad to have a curfew, and I won't be able to go back to the palace later.

If Shangguan Wan'er is not a person in the palace, she can still have a romantic night, but unfortunately, such a special day can only be spent in the daytime.

Shangguan Wan'er, who was happily strolling, looked at the sky, and suddenly lost interest, "It's time to go back!"

Shangguan Wan'er naturally stretched out her hand into Liu Yi's arm, held Liu Yi's hand, and a smile appeared on her face, talking to Liu Yi in a low voice, and leaving Beishi.

When she arrived not far from Liu Yi's house, there were not many pedestrians on the street, Shangguan Wan'er saw that there was no one on the side, and let go of the hand holding Liu Yi, "I'm tired, I can't walk!" Shangguan Wan'er hung her hands and stood in front of Liu Yi, looking deliberately tired.

Liu Yi carried a large bag of things that Shangguan Wan'er had picked up, and looked at the beauty in front of him, "I said lady, you see that your husband is still carrying so many things and is not tired, go home quickly!"

"I'm just tired, I want you to carry me home!" Shangguan Wan'er began to play tricks and stuck to Liu Yi.

Liu Yi glanced at a few curious people on the street, stopped talking, put the package containing things on his shoulder, and then picked up Shangguan Wan'er, who was pretending to be tired there, and put it on his back.

"Wan'er, are you thin again, why are you lighter than last time!" Liu Yi quipped.

"Nonsense, I've always been like this, I'm not fat or thin!" Shangguan Wan'er blew a few breaths on Liu Yi's neck, and deliberately used her own green silk to stroke Liu Yi's itch.

Liu Yi had to pat Shangguan Wan'er's buttocks with his hands to show punishment, making Shangguan Wan'er blush, but fortunately she was not seen by Liu Yi.

Soon arrived at the back door of Liu Yi's house, afraid of being seen by the people in Liu Yi's house, Shangguan Wan'er also got off Liu Yi's back, tidied up her clothes, and followed Liu Yi to sneak in through the back door and enter the house.

Liu Yi took off Shangguan Wan'er's makeup, and the two of them changed back to their original clothes.

"Yi'an, I'm going back!" Shangguan Wan'er was reluctant to give up.

"I'll send you out!" Liu Yi smiled and said, "Put these things in the car for you!"

Some of the things that Shangguan Wan'er bought were going to be put in Liu Yi at this time, and some wanted to take them back to the palace, and Liu Yi also wrapped the things she wanted to bring back.

Shangguan Wan'er stood still in front of Liu Yi and looked at it with affection, "Yi'an... San Lang, this is the happiest birthday Wan'er has ever had in her life!"

"You're wrong!" Liu Yi pinched Shangguan Wan'er's beautiful nose, "Every year on your birthday in the future, you will live so happily!"

"Then you have to stay with me in the future!" Shangguan Wan'er said shyly, and took advantage of Liu Yi's unpreparedness, picked up her toes, quickly kissed Liu Yi's face, and immediately blushed and ran out of the house.

"Wan'er, don't run so fast, I'm worried about falling..."Liu Yi shouted as he stroked the cheek that had just been kissed by Shangguan Wan'er, and walked out after him;