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The weapons used by the special combat team in large quantities, including special daggers, triangular thorns, climbing ropes, small crossbows and bows, have been made by the ordnance supervisor according to Yang Xi's patterns. These weapons can be used in any era, even in later generations of hot weapon warfare, and they are used in large quantities during special operations.

When a special combat team performs a mission, it is not possible to use firearms and grenades under any circumstances, and many times can only rely on some special skills of special combat personnel, including the ability to fight, as well as these weapons that are convenient and easy to carry, and do not make a sound.

The daggers and triangular thorns made by the ordnance supervisor according to the patterns given by Yang Xi were quite delicate and durable, which made Yang Xi quite surprised. He also wrote a letter immediately after seeing the sample, putting forward some suggestions for improvement, and asked his father Yang Guozhong to order the Ordnance Supervision to improve and make a large number of them for subsequent use.

The climbing rope is an indispensable tool in special operations, especially in the era of cold weapons, if you want to climb city walls and cross trenches, you can't do without this thing. However, it is not easy to be firm and easy to carry.

The climbing rope made by Yang Xi is made of jute skin, although it is not as good as the climbing rope material of nylon material in later generations, but it is also strong and durable, and can be used as a tool for climbing city walls, fences, cliffs, mountains and other buildings and highlands. There is a grappling hook at one end, which can be thrown or fired with a special crossbow, and the city tower dozens of meters high can also be easily shot up, and the positioning is accurate, and it can also be used as a tool for crossing rivers and ditches.

A batch of telescopes was also made, but Yang Xi was not very satisfied, mainly because the imaging effect was not very good, and he suggested that Yang Guozhong order the craftsmen of the Ordnance Supervision to further improve it.

These are auxiliary equipment for special operations, Yang Xi hopes that gunpowder can be made as soon as possible, if you can use gunpowder to make some easy-to-carry grenades or grenades, then the combat effectiveness of the special detachment after the formation of the army will be greatly improved! It's just that the production of gunpowder is not destined to be a simple matter, and the preparation of light raw materials takes a lot of time and energy.

Yang Guozhong has a lot of energy in the court, and his status is only under the emperor Li Longji, and even the influence of the crown prince Li Heng cannot be compared with it, but it still took some time for Yang Xi to let Yang Guozhong prepare the raw materials needed for **. Sulfur and charcoal are two raw materials are very easy to obtain, and saltpeter is also produced in Datang, but high-purity saltpeter is not easy to obtain, and it is not easy to refine.

It took Yang Guozhong more than a month to collect two or three hundred catties of saltpeter with good purity for Yang Xi.

The main reason is that there is no place to need saltpeter before Yang Xi's request, and the imperial court has no order to collect saltpeter, and it must be collected in a temporary situation, and it must be of high purity, how can it be easy to get it so quickly? And Chang'an is not a place where saltpeter is produced, and the collected saltpeter should be transported to Chang'an, and then sent to Tongguan, and a few hundred catties can be collected in less than two months, which is already quite good.

It's still time for war!

As soon as the saltpeter arrived, Yang Xi ordered the craftsmen he had chosen to try it out according to the recipe he provided.

Seven nitrate, two carbon and one sulfur, this is the commonly used production formula, Yang Xi also instructed the craftsmen to make this formula ratio.

Yang Xi also instructed that saltpeter, sulfur, and charcoal should be crushed, preferably evenly grained, but not beaten hard, and the place where these raw materials were stored must also be a dry cave, and there should be no open flame near it. Flammable and explosive materials must be carefully cared for, otherwise it will be a big trouble if there is an accident.

Fortunately, there are many mountains near Tongguan, and there are many ready-made caves, many of which are more convenient to come and go, and these caves have immediately become military forbidden places, and no one is allowed to approach without Yang Xi's order.

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With raw materials, as long as the black powder is mixed in proportion, it can be easily made, and on the third day after the saltpeter arrived in Tongguan, a lieutenant named Wang Xuan in charge of ** came to report, saying that dozens of catties of black medicine had been made, and asked Yang Xi to identify whether it was successful.

** Yang Xi is personally in charge, and Wang Xuan, the junior lieutenant, is directly responsible for him, and he has to report directly to him if he has the production results.

Hearing that dozens of catties of finished products had come out, Yang Xi immediately put down the matter in his hand, handed over the training to Yang Zheng, the leader of the guards, and went to evaluate the performance of the gunpowder made by himself. In order to let the generals have a new understanding of gunpowder and make them more impressed with him, Yang Xi summoned most of the generals above the general level to observe together, but Li Fuguo, the supervising army, was deliberately pulled down by Yang Xi.

"Marshal, what's that?" Seeing the sergeants carrying a basket of black medicine powder, Gao Shi, who followed Yang Xi to a valley, couldn't help but ask curiously.

Yang Xi didn't answer, but said with a mysterious look: "You'll know what this is in a while!"

Whether gunpowder is successfully made or not, you only need to test its explosive power to know.

Under Yang Xi's instructions, Wang Xuan grabbed a handful of gunpowder, put it in a recess on the ground, lit a stick of incense, and approached the gunpowder.

Under the curious gaze of everyone, the gunpowder quickly burned up, and a lot of smoke and fire came out, and in a moment it was burned out, leaving not much residue left. Because he didn't know the power of the gunpowder, Wang Xuan didn't run away immediately after lighting the gunpowder, and only after the gunpowder burned violently and emitted a lot of smoke did he react, and he quickly retreated in surprise, but fell to the ground after taking a few steps back, looking embarrassed.

"What kind of awesome thing is this? How can such a big smoke come out? Wang Sili thought that this was a warning drug.

"How can it be so simple? You underestimate Ben Shuai's invention and creation!" Yang Xi snorted slightly contemptuously, making Wang Sili blush. "Cut some bamboo for Ben Shuai immediately," Yang Xi ordered again. Under Yang Xi's order, several sergeants quickly ran to the side of the hill to cut a few arm-thick bamboos, and according to Yang Xi's instructions, cut them into several sections, took a closed section at both ends, and pierced a hole at one end.

Yang Xi instructed the sergeants to fill the black gunpowder into a bamboo tube, gently tamp it with a wooden stick, and fill it up. With gunpowder, it was not difficult to make a lead, but it is not made now. Without a lead, it is easy to ignite it directly, but Yang Xi immediately thought of a solution.

A bamboo tube filled with gunpowder is placed on a stone, and the gunpowder is piled up in a thin long line, extending nearly two meters from the opening of the bamboo tube, and the gunpowder primer at the far end is ignited with a fire fold.

After letting everyone hide in the distance, Yang Xi instructed Wang Yuan, who had calmed down, to go over and light the gunpowder at the end, and instructed him to flee quickly after lighting it and hide in a safe place. Wang Xuan already had an experience, and after listening to Yang Xi's instructions, he immediately stepped forward cautiously, lit the black powder line with the incense in his hand, and immediately escaped.

The gunpowder "snorted" and quickly burned!

After a loud "......boom", the debris of the bamboo pieces flew everywhere, startling a group of birds.

Except for Yang Xi, the other soldiers were all taken aback.