Datang: Acting as a celestial mystery at the beginning

Li Yi'an was very surprised that there would be brand new rewards for the new level.

"receive!"

Li Yi'an took it out and spread it out to have a look. It was a huge map that couldn't fit on the table, so it could only be spread on the ground.

The system is still very considerate, the material is not the kind of later generations, but a retro sheepskin roll, and the surface is a little yellow.

The map not only shows the landforms of the mountains and rivers, the direction of the land veins, but also various ocean currents, islands on the sea, etc. in the ocean. In short, they are all there.

The center of the map is still Datang, and Gyeonggi Province, Jiannan Province, etc. are all marked with words.

This is simply the world map of the early Tang Dynasty.

"This time the system is so humane!"

Li Yian was thinking while watching.

Now that there are world maps, and the ocean conditions can be depicted in such an accurate and detailed manner, shouldn't the era of great navigation have to be advanced, starting from the Tang Dynasty.

You must know that shipbuilding technology is also included in the systematic knowledge inheritance. It can not only earn experience, but also change the shortcomings of China's lack of experience in the sea in ancient times, develop maritime hegemony in advance, and avoid closing the country later.

In the Sui and Tang Dynasties, there was the Grand Canal connecting the north and the south, and there was also the Yangtze River that went straight into the middle of Sichuan. The river transportation can be said to be relatively advanced. For example, the dragon boat that Yang Guang went to the south of the Yangtze River already has a three-story ship, which is connected by mortise and iron nails.

With the opening of the Grand Canal, in a sense, it also promotes the development of river transportation.

It’s just that in terms of shipping, the difference is not at 01:30. The most important thing is that people’s awareness of the sea is almost zero.

With this idea in mind, Li Yi'an went ahead with it.

After thinking about it for a while, he found a model called a sand ship from the system as a stereotype, also known as a square boat. The shape of the ship is square and square, with a wide deck, a deep and small hull, a low freeboard, and a stern out of the boat.

This kind of ship has a shallow draft and a large hull, and can be equipped with more tricky poles, even if it is against the current, it will not affect the navigation. After the Tang Dynasty, many cargo ships, sea ships and warships used this model.

Zheng He's treasure ships on his voyages to the West were also of the sand ship type and were modified.

According to historical records, the rudiments of sand boats appeared in the Yin and Shang Dynasties, and finally finalized in the Song Dynasty. Li Yi'an used the kind of sand boats in the Song Dynasty, and then combined Zheng He's treasure boats.

But these are just knowledge, without specific sketches, it is not easy to draw all the pictures.

After pondering for a while, I looked at the brush in my hand. It was too troublesome to use it to draw pictures. First, I found someone to make a simple pencil with charcoal according to his idea, and then made drawing paper of good enough quality, and slowly put it on Toss it out.

-

The day after the auction ended.

The Chang'an Daily also published a piece of news that occupied a full page, saying that in Chang'an West City, there are those Tianmu lamps for sale, but the quantity is not large, only [-] sets, one set of two, limited supply, first come first served, The newspaper also stated the location of the shop.

As for the price, it is still unknown.

At the auction yesterday, those who couldn't buy the Tianmu lamp felt that the opportunity had come, and hurriedly asked people to queue up at that shop.

This is Cheng Yaojin's store in the West Market, and they slowly opened the door for business around noon.

"There are so many people!"

Cheng Yaojingang was taken aback when he came here. Seeing a long queue outside the shop, he said loudly: "Today there are only 1000 sets, and the purchase limit is [-] people. Each person can only buy one set, and one set is [-] guan. , Line up everything you want to buy, don’t mess it up!”

"So cheap!"

The people queuing up outside suddenly cheered and became excited.

You must know that at yesterday's auction, the cheapest ones were in groups of [-] guan.

Cheng Yaojin found that Mr. was more ruthless than himself, he wanted to raise the price to hundreds of guan at most, but Mr. actually raised it to thousands of guan, and there were so many people rushing to buy it, even yelling that it was cheap, Changan was rich. There are so many people.

"My old Cheng is still too kind!"

Comparing the prices of the two days before and after, in the eyes of those extremely rich families, it is simply the price of cabbage, but in an instant, a thousand sets were snapped up by them.