Five shots per second, the resulting movie is very poor, and there will be an obvious sense of stuttering. If you want to be smooth and realistic, you must at least play at a speed of 24 frames per second.

But Jiang Wei can't do this yet, because the camera is too simple. After some time of experimentation, the final shooting was frozen at 10 frames of film per second, which is already the limit. If you want to make a better result, you can only make a good camera from the beginning.

But Jiang Wei doesn't know much about camera technology, and being able to do this is already his limit. If you want to do better, you can only study and ponder slowly. But he can leave these to Cheng Chuliang to ponder. Now with 10 frames per second, it is enough to shoot a fairly good movie.

Behind it is the gramophone. Jiang Wei's idea was to record the movie and then dub it in the studio. In this way, the film is played while the gramophone is cranked by hand.

But Jiang Wei originally used a phonograph made of tin foil, and it was okay for one person to play with it, but if it was really going to be used in a movie, it would be very difficult to use, after all, there were too many shortcomings.

First, the time is too short. Second, the sound is too small to be heard at a slight distance. The third noise is too loud, and the fourth, if you turn it about four times, there is basically no sound, and it is too easy to lose.

So this time Jiang Wei replaced the tin foil with a traditional Chinese medicine. That's red gum.

Red gum was not in the territory of the Tang Dynasty, but imported from Annam (Vietnam), and the earliest record of red gum was in the "Wu Lu", when it was still the Han Dynasty.

Red gum is a resin, it can be used in rubber, tree material, electrical, defense and other applications, and at this time, red gum is not only a medicinal material, but also a dye. Most of the red glue on the Annan side was supplied to Datang.

After all, this thing is in great demand in Datang. And the price of this thing is quite acceptable to Jiang Wei.

And red glue is the material used in the first audio disc to be born. The first time is long, and the second can be repeated, but the negative disk will be much worse than the master disk.

But even the hand-cranked recording disc made of red glue still has a lot of noise? And short lifespan? But there's no way around it.

After Jiang Wei solved the problem with the phonograph. It's been another month. At this time, Princess Shahr finally returned to Chang'an City.

Accompanied by Princess Shahr? Two beautiful Persian maids? There were also more than a hundred guards, as well as a middle-aged Hupersian diplomat.

After arriving in Chang'an City? Princess Shahr did not follow the diplomat to meet the officials of Honglu Temple, but took the two maids to the Xu Mansion as soon as possible.

And when you come to Xu's Mansion? only to find that Jiang Wei no longer lives here? Moved to Yunling Village.

Princess Shahr is not familiar with it and has not been there, but fortunately, there are not many cement roads at this time? After inquiry? Princess Shahr finally arrived in Yunling Village.

It's just that Yunling Village is very different from the village she imagined. Aren't villages full of potholes, and they live in the mountains or near ditches?

She had seen Datang Village before, but it was just Yunling Village in front of her? It was so much better than any city she'd ever seen.

In this day and age, in Chang'an? Or in the city of Typhore in Persia, or in Constantinople in Rome? It's normal to see feces.

But here, she sees clean? Is it too clean? She couldn't find a single piece of garbage. Such a place? It is simply the most ideal place for human beings.

And the buildings are very beautiful, the streets are clean but you can't bear to throw away even a little rubbish. To her surprise, the road of pedestrians and carriages was separated by green lawns and beautiful flowers.

This is the most ideal urban model of human civilization!

After the exclamation, Princess Shahr admired Jiang Wei more and more, worthy of being a messenger of the gods, even if it was the city where he lived, oh no, the village. It can be so different.

When she came to the island, Princess Shahr enjoyed the beautiful scenery of the island before coming to the door of the villa.

"Hello, I am Shahr Banu, the princess of Persia. Now I have come back to fulfill my covenant with the Messenger. ”

Although Princess Shahr's Chinese is relatively good, she still has a hint of accent. The guard at the door was Huzi, he was stunned for a moment, and then replied,

"Wait, I'll report."

After about ten minutes, Huzi came back,

"Our son-in-law said, please inside."

Princess Shahr nodded, followed by the maid and walked into the front yard. Looking at the surrounding flower beds, streams, and rocking chairs under the trees is very refreshing. The design of this small garden with various shapes is more avant-garde to people of this era.

After passing another mountain and a small forest, Princess Shahr finally met Jiang Wei.

In between, he was on a green lawn, with only a white table and two white chairs. It looks extraordinarily distracting to the eye.

And Jiang Wei was sitting there, and there were two women standing behind him, it was Dugu Qianyi and Xiao Zhuoya.

"Princess Shahr, please be seated."

"Thank you, honorable oracle."

Shahr bowed and sat down opposite Jiang Wei. Xiao Zhuoya took the glass goblet and put it in front of the two. And Dugu Qianyi took a bottle of cold wine and slowly walked to the table. Pour the wine into a glass goblet.

Jiang Wei pinched the goblet and picked up the wine, shaking the wine glass in his hand with a smile,

"Princess Shahr, it seems that you are in a very good mood, and if I am right, Persia has already repelled the invasion of the Great Eclipse, right?"

Princess Shahr nodded,

"Dear oracle, with your help, we have repelled the invasion of the Great Eclipse and signed a truce. Without your help, I think we would have perished in Persia by now. So, this time I brought our Persia enough sincerity. This is the royal instrument of our Persian king Yezdeged III. ”

As she spoke, the maid behind Princess Shahr held a parchment roll in both hands, and knelt in front of Jiang Wei with both hands dragging the parchment roll.

Jiang Wei picked up the parchment roll, touched the material, and looked at the fine patterns on it, this thing has been passed down to future generations, and it can definitely be called an antique.

Jiang Wei put the parchment roll on the table, sighed and said,

"Princess Shahr, I don't know your Persian, you can help me translate it."

"It's my pleasure."

Princess Shahr picked up the parchment scroll and read it aloud. The first three points are nothing more than Jiang Wei mentioned three requirements at the beginning, the first Princess Shahr will serve him in the future. The second is to send troops. The third is to promote his greatness.

In addition to these three contents, there is also the goodwill of Yezdegerd III, hoping to see Jiang Wei, followed by ten boxes of gold and silver. However, at present, these are placed in Chang'an and have not been brought.

Finally, it is the desire to be able to maintain a friendly relationship with Jiang Wei forever, and to be able to have more exchanges.

After Jiang Wei listened, his fingers tapped on the table while thinking.