After a little more than a month, the trade of the fleet gradually came to an end, and only four or five cargoes remained, and the time came in March, and the weather began to warm up.

It is expected that in another ten days, all transactions will be completed.

The northeast wind has disappeared, and from the point of view of time, the summer monsoon will begin in half a month, so the fleet will have to set off in half a month at the latest, and before the summer monsoon grows stronger, it will sail all the way east to the South Seas, turn north, and return to Dasong before July.

Before the fleet set off, the itinerary had been drawn up according to the monsoon and ocean currents, and all the time must not be delayed, otherwise it will be delayed on the road for a year.

While the fleet continued to return to Yi in exchange for valuable cargo, it began to replenish supplies and prepare for the return to the Great Song Dynasty.

That night, Shen Jin suddenly found Yang Congyi and gave him something and asked him to help see what it was.

"Lord Yang, this is an item I found in the Basra shop, at first I thought it was a treasure, but then I heard that it was not a jewel, but I don't think these things are simple, and I don't know what to do." Shen Jin sat down as he spoke.

Since Shen Jin went to sea, in addition to being responsible for repairing ships, he would search for some local utensils whenever he went to a place, and exchange techniques and techniques with people, from Tianzhu to Seljuk, not only would he walk around, but he would also bring some craftsmen by his side, and if he didn't understand, he was determined to write a book that surpassed "Mengxi Writings", or at least had to be on par with "Mengxi Writings".

Yang Congyi didn't speak, picked up the thing and looked at it, only to see that it was an oval-shaped transparent bead, it was easy to see that this was definitely not a pearl, and after looking at it, he couldn't see what it was.

I was about to put it down, and suddenly found that I could vaguely see the opposite thing through the bead, and then I took a closer look at it from a different angle, and sure enough, I found that I could see the opposite thing through this bead, and I was shocked, and blurted out: "Where did you find this thing?" ”

Shen Jin sensed the abnormality of Yang Congyi's tone, and asked back, "Is there any problem?" Do adults know what it is? ”

Yang Congyi looked at the bead again and replied, "I don't know what it's called, but this bead is transparent, and you can see the opposite thing through this bead." It's a good object, Da Song doesn't have it. If my guess is correct, this bead must be brittle, and if you throw it on a hard object, it will definitely break. Also, this thing is not supposed to be naturally generated, and is most likely made by locals. ”

"Manufactured? How is this possible, how can something transparent be made. Shen Jin couldn't believe it.

"Although the world is big, but the gem-like things, there is not much difference in various places, either pearls or jade, but such transparent things, and different from crystal, should be man-made. If my guess is correct, this kind of thing should have many other shapes besides round. You should ask the locals to see how this thing is made, if you can learn this technique, it will definitely be very useful to return to the Great Song Dynasty. Think about the needle disc you remodeled, if it had such a transparent lid on it, how convenient it would be. Yang Congyi immediately began to lure him and asked him to explore this technique of making glass.

Shen Jin took the beads, looked at them again, and said with a smile: "Lord Yang's idea is really good, if this thing can really be made, it is not impossible to transform the needle plate." ”

"Be bold to explore, if you want to use money, go to Master Tang to withdraw it, and I will say hello to her."

"Thank you, Lord Yang, I'll definitely figure it out." Shen Jin got up and said goodbye.

Yang Congyi has high expectations for Shen Jin, since he knew that he was a descendant of Shen Kuo, he tried his best to guide him in the field of scientific and technological research, hoping that he could inherit and develop "Mengxi Bi Tan", although he had not read this book, but through history textbooks he knew that this book was of great significance in the entire ancient Chinese history, and if it was not inherited and developed, it would be a great waste.

The trade of the fleet continued, and after five days, the last batch of goods was also sold out, and the Great Song fleet had no more goods to exchange, and there were still many merchants waiting for the transaction, and they were reluctant to leave.

Tang Xun could only persuade them to leave, telling them that if they wanted the goods of the Great Song Dynasty, they could wait for the next fleet to come over in two or three years, and if they couldn't wait, they could also form a fleet to go to the Great Song Dynasty to trade.

The merchants, who couldn't get the goods, were moved and began to consider whether to join forces and form a fleet.

However, the reality immediately destroyed them, because they found that they could not build such a wide sea ship as the Great Song Dynasty, first, there was no such large wood, and second, there was no such magical shipbuilding technology, they could only build small boats, they could not run a distance of 2,000 miles, they could only sail along the coast, non-stop supplies, even if it took a few years to reach the Great Song Dynasty, they could not bring back much goods, and they had to take huge risks.

Without big ships, they can only take the land route and do transit trade, unless they can buy a big ship like the Great Song fleet after they go to the Great Song Dynasty, but this kind of big ship is obviously made by the state and will not be easily sold to outsiders, and in the end they can only give up.

But just as the merchants were about to leave disappointed, they heard good news.

Whoever can find an ore within ten days will trade the last cargo as a gift.

The merchants were ecstatic, this was the last chance, which one didn't want to seize, so they entered the camp one after another to see what ore the Great Song people needed.

As soon as everyone arrived in the tent, Shen Jin placed a crystal mineral in front of them.

Tang Xun smiled and said: "Everyone, as long as any of you can find this kind of thing within ten days, the last batch of goods will be traded with whomever we want, we will leave in ten days, if you want our goods, please hurry up." ”

After the translation, a merchant asked, "How much of this ore do you need to trade?" ”

Shen Jin said: "Ten cars, at least ten cars, the more the better." ”

Tang Xun said with a smile: "If you find ten cars, you are qualified to trade with us, and if there are more, we will consider buying them." ”

After the translation was completed, the businessmen didn't have time to ask again, time is the goods, this is the last batch of goods, and they must be grabbed in their hands.

So after each person took some crystal minerals, he quickly left, and immediately went back to mobilize manpower and connections to find this kind of thing.

The return has been basically completed, and the remaining time is to start counting and checking the goods ship by ship, and make a unified registration book.

After five days, Shen Jin finally inquired about the transparent beads that were something called glass, which was indeed man-made, and also found a way to make it, as well as a small amount of materials.

After some research, I felt that it was not too difficult to make the glass into the desired shape, and it should be very useful in many places not only when renovating the needle disc in the future.

So after he came back, he immediately found Yang Congyi and told him the good news. Then they asked all the craftsmen of the fleet, and found that no one had ever seen that kind of crystal mineral, which indicated that it was likely that the Great Song Dynasty did not produce such a thing.

And this crystalline mineral is also not common in Seljuk. However, since this kind of glass is so useful, it is necessary even if it takes a lot of effort to make it.

Yang Congyi found Tang Xun and asked her to think of a way to see if she could mobilize merchants to find this mineral, so that there was the last batch of goods.

A few days later, Lord Huang returned to the port, accompanied by Vipra and the envoys of the Seljuk king, as well as five noble merchants.

The Seljuks were stunned by the huge ships of the Great Song fleet, especially the main ship of the Shenzhou that was more than 20 zhang long, which amazed them, and they couldn't come back to their senses for a long time.

Until they boarded the largest main ship in person, they still couldn't believe that this was a ship that could be built by humans.

In their opinion, such a huge ship, only the legendary Noah's Ark can be compared to it, it is simply a miracle, and the Great Song Kingdom is really powerful.

That night, the Seljuk emissary, Vipra, and the five nobles all took up residence in what they saw as Noah's Ark.

In the next few days, Yang Congyi helped Tang Xun finally count the goods of sixty or seventy sea ships and register them in a unified manner.

For the rest of the day, the ships took turns to dock to replenish fresh water and make final preparations for the official departure in three days.

A group of Xuanwei troops and reserve troops also seized the time to enjoy the few land lives, and after the return was completed, Yang Congyi gave them two days off in turn, during which there was not much they could do, but Basra was not far from the port, enough for them to have a good day there.

In the two or three months since landing in Seljuk, there has always been a legend in the army, the legend is that the little lady here is enthusiastic and unrestrained, hot and abnormal, showing her arms and thighs is commonplace, and it is common to show her waist and belly button.

Groups of soldiers on leave rushed to Basra to the kind of place that made them swoon, and after a night of indulgence and profligacy, they had to rush back the next day with a sore back, after all, time was limited.

If they were to be asked what good things they had seen in Seljuk in the future, their minds would immediately fly back to the place that fascinated them, with sultry eyes, smooth arms and thighs, and a navel that made people unable to take their eyes off, and a beautiful woman who was warm and soft and could endure tossing.

At the last moment when the fleet was about to set sail, two merchants brought the crystal minerals that Shen Jin needed almost at the same time, one brought twelve carts and the other brought fifteen carts, both vying for the last batch of goods.

Seeing that they were arguing, they almost made a move, Tang Xun hurriedly came out to play a round and told them that there were two kinds of goods in the last horse, 3,000 horses of silk and 10,000 catties of tea, and all of them were sold to them by one person, and the crystal minerals were deducted at a discount.

After ten days of hard work, in the end, the two businessmen got the goods of the Great Song Dynasty, and after paying for the delivery, they both returned hand in hand.

At this point, the Huiyi fleet used the last batch of goods to get a batch of things of incalculable value.

Are crystal minerals and cyan ores valuable? Tang Xun was very suspicious and unsure.