Cui Yingying was playing with the glass beads, and when she saw Li Su coming back, she walked up to Li Su with the glass beads and said, "Your Highness, look at this glass bead, this is given to Binglan by Qin Huaiyu, and the concubine has never seen such a beautiful glass bead." ”

Zheng Binglan's face became redder and redder when she heard Cui Yingying mention it.

Li Su looked at this glass bead with some embarrassment, no matter how stupid Qin Huaiyu was, he would never say that this glass bead was given to him by Li Su, so Cui Yingying didn't know that this was Li Su's thing, or very envious, I have to say that the glass is a very valuable thing in the Tang Dynasty, it is generally a royal gift, and some are shipped from Persia, and the value is also very expensive, so in order to show their identity, or compare with each other, they will buy some glass utensils and put them at home, and there are a lot of glass impurities at this time. It is not as crystal clear as modern glass products.

The Zheng sisters and Cui Yingying are both from famous families, and they have also seen these things, so they also know the value of this glass bead, and because of this, when Qin Huaiyu gave this glass bead to Zheng Binglan, the three of them would be so surprised.

"It's beautiful!" Li Su echoed and said, he can't penetrate it in front of him This is what he gave to Qin Huaiyu, this thing is still a few yuan in modern times, and it is not as valuable as a potato.

Li Su came back, and the Zheng sisters should not stay here anymore in order to avoid suspicion, so they made up their minds to leave the South Courtyard, Cui Yingying saw that the Zheng sisters were leaving, so they exchanged the glass beads to Zheng Binglan, their eyes were still staring at the glass beads, and they were very envious, "The price of this glass bead is expensive, how can Qin Huaiyu have spare money to buy this?" ”

After the two left, Cui Yingying expressed the doubts in her heart, Qin Huaiyu's money is clear to her, and she has only 100 yuan a month, and now she has saved about 1,000 yuan at most, and this glass bead has to be about 10,000 yuan.

Li Su shook his head helplessly. put the cloth bag in his hand in Cui Yingying's hand, "See for yourself!" ”

Cui Yingying held the cloth bag, only to feel that the bag was heavy, and when it shook, there was a crisp "click" sound inside, he followed Li Su back to the room, put the bag on the table, and opened the cloth bag layer by layer.

"Oh my God!" Cui Yingying's mouth grew in surprise when he saw the contents inside, and then he reacted, "Your Highness, you spend money to sell so many jewels. What a waste! ”

Li Su sat down, poured himself a glass of water, and said: "These things are valuable in Datang, but they are not valuable in Luo Anguo, and these things you see are not even worth the usual money." Li Yu didn't intend to sue Cui Yingying that these were fakes, since they were beautiful lies, why bother exposing them, otherwise wouldn't it be too boring.

Hearing this, Cui Yingying was immediately stunned, "These gems are only worth the same money?" ”。 She held a ruby in front of her and looked at it in disbelief.

"That's right, Qin Huaiyu's glass bead is the same, it's just an ordinary toy in Luo Anguo." Li Su took a sip of tea and continued.

After confirming that this is true. Cui Yingying's expression began to change, and suddenly she held all the gems in her arms, and said with a grin: "These are mine, all mine." No one can rob me. ”

Li Su was speechless for a moment, it seems that no matter which dynasty women are in, they have a natural preference for gemstones......

The next day, Wang Jue escorted the armor given to Li Shimin by Murong and his son and Li Su back to Chang'an according to the agreed day. Before leaving, he also came to Li Su's house to resign from Li Su, and Li Su finally completed the task assigned by Li Shimin.

After Wang Jue left, Yizhou began a new round of commercial promotion, and now Tong Nian is gradually familiar with the procedures for promoting new products, advertising, on-site trial, white sugar and edible oil These two things do not need to be explained by Li Su, the Shengtang Business Daily has been published, and the training of the chef is also underway, but now the Shengtang Chamber of Commerce itself is a brand, and the new product cloth will immediately attract a large number of businessmen. Merchants poured into the Shengtang Chamber of Commerce to inquire about these two products, but Tong Nian did not immediately pay attention to these merchants, but pretended to be mysterious, waiting to create a greater publicity effect.

Tong Nian is busy here in the Shengtang Chamber of Commerce, and Li Su does not interfere in the promotion of products, but Tong Yu brings good news to Li Su at this time, the artillery is now officially tested successfully, and he is only waiting for Li Su to go to check.

That morning, Li Su, who got the news, was in a good mood, and he informed Qin Huaiyu and Zhu Youzhi, and the three of them went to watch the first batch of artillery together.

In the col two miles outside the Taoyuan Valley, Tong Yu is taking more than a dozen craftsmen to set up targets, the Taoyuan area is too small, and there are military camps and workshops inside, and the range of the artillery is too far, and the power is too large, it is not suitable to carry out artillery tests in the Taoyuan, so during the development of artillery, Tong Yu has been taking people to test the power and range of the artillery at the newly opened test site outside the valley. Because he wanted to show Li Su, he had to show the best.

On both sides of the small mountain pass is the bare high mountain, there are only sparse trees on the mountain, the scenery on the mountain is in full view, there is a five-mile wide and ring-shaped land in the middle of the high mountain, which is a very suitable place for artillery test firing.

Li Su took Qin Huaiyu and Zhu Youzhi to the artillery test site, Zhu Youzhi came here for the first time, he didn't expect Li Su to have such a secret base, but he was also quite pleased, at least this shows that he has integrated into Li Su's circle.

"Your Highness!" Seeing that Li Yu was coming, Tong Yu stepped forward to salute Li Su, and greeted Qin Huaiyu and Zhu Youzhi respectively.

Li Su was all about artillery, so he said, "Take me to see it!" ”

"Your Highness, please come here!" Tong Yu stretched out his hand to lead the way, leading the three of them around a corner, and the three of them saw three dark long tube-shaped objects in the middle of the flat ground, which were undoubtedly artillery.

Compared with Li Su, Qin Huaiyu and Zhu Youzhi were more interested in these artillery, and they took a few steps forward to look around the artillery.

Speaking of artillery, in fact, Tong Yu developed it very early, but he was not satisfied with the kind of front-loading artillery in the sixteenth century, because he saw more excellent artillery from the technical information provided by Li Yu, so he continued to improve, until now because of the limitations of other auxiliary technologies in Taoyuan can no longer be improved, he stopped developing, and these guns are more in line with his requirements.

Tong Nian's three guns on the test site have different shapes, one on the left side has a very long barrel, the barrel is three meters long, the caliber is 13omm, the pipe wall is gradually thickened from top to bottom, but compared with the 16th century red-coated cannon barrel wall is at least half thinner, greatly reducing the weight of the artillery, this is because of Taoyuan's steel refining technology, the introduction of Li Su's technology, and video teaching, so that the steel smelting technology to a higher level.

"Why is the barrel of this gun so long?" Qin Huaiyu looked at it for a while and asked.

Tong Nian explained at this time: "This long-barreled gun is called a naval gun, as the name suggests, it is loaded on a warship, because the barrel is long, and the firing range of this gun is also the farthest." ”

Qin Huaiyu thought of the big ship being built, and nodded thoughtfully.

Zhu Youzhi has occasionally seen the style of artillery in some modern books, and he pointed to the smallest artillery on the right and said, "If I guessed correctly, this is a field artillery, right?" ”

"That's right, it's a field gun." Tong Yu was a little surprised, he didn't expect Zhu You to recognize him at a glance, he didn't know that the Military Academy had also opened video teaching.

The artillery pointed by Zhu Youzhi was placed on a two-wheeled vehicle, the gun was fixed on the bracket on the car, and a lever for traction stretched out from the back, and the length of the gun was half less than that of the naval gun, only about one meter and a half, and the caliber was 1o5 mm.

There is still one artillery piece left, Tong Yu explained: "This is a siege artillery, which can also be used to defend the city, the caliber is relatively large, and the ammunition loaded is also more, and the power is very great." ”

While a few people were talking, the craftsmen who had set up the target returned, and their target on the mountain had been set up, just waiting for the test.

"Your Highness, do you want to test it now?" Tong Yu asked.

Li Yu was very interested in the artillery developed by Tong Yu, he had just observed carefully, these guns were actually rear-loading guns, "Let's start!" ”

Li Yu and the two of them stood on one side, waiting for the artillery firing test, and Tong Yu was ordered to let the craftsmen start adjusting the angle of the artillery.

After a while, the two men adjusted the angle of the artillery, and the third opened the wooden box next to it, and took out a cylindrical cannonball from it, and the craftsman next to him opened the base of the cannon, and the craftsman holding the cannonball stuffed it into it.

"Your Highness, please cover your ears!" Tong Yu reminded.

Li Yu covered his ears as he said, Qin Huaiyu and Zhu Youzhi also covered their ears in the same way, Tong Yu saw that the three of them did as they were told, so he shouted: "Release!" ”

The craftsman listened to the order, grabbed a rope on the artillery, and pulled it violently, Li Su only heard a "boom", and then the ground under his feet also trembled, and he looked at the mountain in the distance, a mountain of stones piled up fell down in an instant, raising a cloud of dust.

Li Su was a little shocked, but what he was shocked was not the power of the artillery, but the way the artillery was fired, and the rear-loading artillery had already surprised him, but he didn't expect it to be firing.

Qin Huaiyu and Zhu Youzhi's faces were pale, and they were also frightened by this kind of scene when they let him come over in the battle of thousands of troops and horses, and the stone mountain in the distance actually collapsed in this sound, the distance was still very far, with such a sharp weapon, wouldn't it be a palm to attack the city in the future, at this time they looked at Tong Yu's eyes, and they were suddenly full of awe. (To be continued......)

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