Liu Yin had already verified with the old craftsman yesterday that these crossbows had no production capacity in Shu, and they were obviously imported from other places. This is not to say that Shu's mechanical manufacturing capacity is worse than Wei Wu, in fact, it is the opposite, Shu because of the genius of the instrument manufacturing expert Zhuge Liang and the first-class craftsman Pu Yuan, in the field of machinery manufacturing, is much more advanced than Wei and Wu, profit and loss crossbow is its outstanding representative work. It's just that the focus of the two sides is different, Shu is narrow and poor, resources are limited, and only advanced weapons are developed, such as this kind of crossbow that is not very widely used, Shu has not developed.

Feng Quan has a wealth of experience in this area, and after he saw it, he said with certainty: "Yes, these crossbows are indeed not produced by our dynasty, they should be smuggled by assassins from abroad, these crossbows are easy to disassemble, and it is not too difficult to smuggle them into the country through the checkpoints." ”

Zhang Le pursed his lips and said: "Even if these crossbows come from the anti-Wei dynasty, it may not prove that those assassins must also be anti-Wei spies, the clothes worn by those assassins and the knives used are all produced in Shu, what is the explanation of Lord Youcheng?" ”

Liu Yin smiled slightly and said: "What I said just now also indicates that the possibility of the assassination of the Wei State spies is the greatest, and it does not rule out the local hostile forces in Shu and some wealthy families who have personal enmity with Your Majesty. The clothes worn by these assassins were all woven from Shu, but from the inside out, they were all made of the finest Shu brocade. Although Shu brocade is a local specialty, it is expensive, and I don't think everyone here will give Shu brocade to the servants to wear, right? ”

Shu brocade is the best silk, has always been the main product of Shu export earnings, but due to the high price of Shu brocade, it is also destined to become a private consumer goods, only a luxury that can be enjoyed by dignitaries.

"Maybe this is the assassins deliberately trying to confuse the public through clothing, but they obviously ignore an important common sense, the Shu brocade is not something that every Shu person can afford. And this provides the most important information, this Assassin organization has considerable financial capacity and is not short of money. Secondly, these knives are standard weapons of the Shu army, have you noticed what is special about them? Liu Yin stood up, picked up a knife casually, and showed it to everyone.

These weapons are all too familiar, because they are indistinguishable from the knives that everyone has now. The sword weapon manufacturing of Shu is unique, the famous knife maker Pu Yuan once cast 5,000 knives for Liu Bei in Chengdu, and 3,000 knives for Zhuge Liang's Northern Expedition in the Slope Valley, the knife he made can split the bamboo tube filled with iron beads, and is known as the magic knife. From the legend, it can be known that the main know-how of Hamoto's knife making is to master the exquisite steel knife quenching technique. He was able to distinguish the influence of different water quality on the quenching quality, and selected Shujiang water with a large cooling rate to quench the steel knife to the appropriate hardness.

About Pu Yuan, there is also such a broken news: once Pu Yuan made a knife, which needed to be quenched, he did not use the ready-made Han water nearby, but specially sent someone to Chengdu to get the water of the Shu River. Many people were surprised, Pu Yuan explained; "Han water is pure and weak, and it is not quenched; The water of the Shujiang River is relatively refreshing and strong, which is suitable for quenching. When the water was retrieved from Chengdu, Pu Yuan tried it with a blade and immediately said: "This water has been mixed with water, so it can't be used." But the water collector tried to deny it, insisting that it was not adulterated with other water. Pu Yuan immediately made two strokes in the water with a knife, and then said: "The water is mixed with eight liters of Fujiang water, and I dare to say that there is none." Seeing that the situation was not good, the water collector hurriedly prostrated and confessed his guilt, telling the truth. It turned out that the water collector returned from Chengdu, and when he arrived at the Qingjin Ferry, he accidentally fell to the ground and spilled a lot of water. He was terrified, for fear that it would be difficult to make a difference when he went back, so he took eight liters of water and mixed it in a hurry, thinking that he could pass the test without knowing it, but he was unexpectedly recognized by Pu Yuan at a glance. Everyone present was impressed by Pu Yuan's wonderful skills.

Although there is no shortage of famous teachers in ancient China, such as the cadre Mo Xie Ou Yezi, although they have cast and practiced the famous sword through the ages, but cast a good sword for at least a few years and even exhausted their life's work, and really make the famous sword become a mass production standard product, Pu Yuan opened a generation of precedent, the advent of the hundred refining knives, so that the combat effectiveness of the Shu ** team has obviously increased by a level, making up for the disadvantage in numbers, and even in the decades-long war against Wei, Shu Han has maintained a slight upper hand, from the first point, Pu Yuan is indispensable.

Although Pu Yuan has passed away, the knife-making workshop skills in Shu have been inherited, and the knives used by the Shu army now are basically produced by the workshop.

In the face of Liu Yin's question, everyone was puzzled, no one could see the special features of this knife, Zhang Le even pulled out his saber, compared with it, there was almost no difference between the two knives in appearance.

"It's exactly the same, this knife is also from the third workshop of Shudu." Zhang Le said after comparing it. On the handles of the two knives, the words "seventy-two refinements" are engraved, and there are also the words "Shu three" at the bottom, indicating that the knife casting process is seventy-two refinements, which are produced in the third workshop of Shudu.

"Is it really the same?" Liu Yin took the two knives from Zhang Le's hands and compared them in front of everyone, "Zhang Duwei's knife has many scratches on the back, and there are a few small gaps in the blade, but this knife is brand new and has almost no traces of use. ”

Feng Quan suddenly realized: "What Lord Youcheng means is that the knives used by the assassins have just been produced, as long as we trace the origin, it is not difficult to find out the true identity of the assassins." ”

Liu Yin nodded and said: "Yes, since these knives are all newly cast knives, then between the workshop and the Hyogo, there must be production and storage records of these knives, more than thirty knives are not a small number after all, as long as you find out how these knives flowed out, it is naturally not difficult to find out the identity of the assassin." Feng Shidao, you stay in the mansion, and I will go to the third workshop and Hyogo with Zhang Duwei to check it. Zhao Duwei, you take someone to secretly investigate the woman named Xue Wu inside and outside the city, remember, don't startle the snake. ”

Zhao Zhuo had seen Xue Wu, Liu Yin specially arranged for him to look for it, although it was not clear how much Xue Wu was involved in this assassination case, but only by finding her could he explain all this, but it was very difficult to find a woman who was deliberately hidden in the vast sea of people.

Therefore, Liu Yin still wanted to find a breakthrough from these hundred refining knives first.