At present, several small wooden houses have been temporarily built on the site of the Thunder Division not far from the academy, and the official building is still under construction.

Li Shimin deliberately transferred his most loyal 1,000 Xuanjia Army to be stationed not far away to guard this place day and night, if the person who entered did not have the waist card of "Thunder Division" printed on it, most likely, no, it must be wasted!

Zhang Zhongqing's men had already prepared all the blacksmith's tools and stacked them in a wooden house.

Zhang Zhongqing pointed to the tools in the room and asked, "If you lack anything, you can say it!" I'm going to see at least one finished product by tonight! ”

Tie Shengzi carefully checked it, and then said: "There is a grinding stone missing, now the tools are complete, you don't need to go to night, I will get it for you in two hours!" ”

For two hours, it was still Tiesheng who was ambushed, and it only took one hour in total from making a fire to experimenting to creating a finished product.

In the end, it is the most ingenious craftsmanship in the prison, the arrow and the half-iron rod made by Tie Sheng are integrated, the arrow is extremely sharp, this guy also creatively added barbs to the arrow, after shooting the human body, it is not only laborious to pull it out, but also easy to bring secondary damage to human tissues, even if it is not made into a thunder arrow, this is also a big killer.

Zhang Zhongqing didn't expect this simple-looking blacksmith to be so smart, and he never thought of adding barbs to the thunder arrow.

"Not bad! Not bad! How much can you do in a day with this kind of barbed arrow? ”

Tie Shenghan smiled: "It's also twenty!" This arrow is made by pouring method, and it is effortless, but if you still have to sharpen it, it is estimated that it is thirteen or fourteen a day. ”

Zhang Zhongqing has always been generous, and a piece of silver was thrown to Tie Sheng: "Your idea is good!" The craftsmanship is also very good! Let's do it in the Thunderbolt Division from now on! In a few days I will find you some apprentices, and when you and your apprentices will be able to produce 200 pieces a day, and your wages will be doubled!" When will it be possible to produce 2,000 sticks per day, hum...... I'll ask Your Majesty to give you a decent official! ”

As soon as Tie Sheng heard that he could be an official, his saliva immediately flowed out. The profession of blacksmith belongs to "work", which is between the people and the merchants, and has always been unpopular. If you can be an official, you still have a grade......

Regardless of Tie Sheng, who was trapped in a fantasy and couldn't extricate himself, Zhang Zhongqing handed the finished product made by Tie Sheng to his subordinates and asked him to fill the gunpowder.

In the test field, Leng Feng carefully inspected the finished product brought by Zhang Zhongqing, and felt that there would be no problems.

Zhang Zhongqing pointed to the new. The iron rod of the thunder arrow said: "Replace the wooden rod with an iron rod, and after the explosion, the power will be even higher!" ”

The wooden pole exploded, the fragments were wood, and when it met armor, it would not be lethal, if it was iron...... Maybe it can threaten the thin iron armor?

Practice is the only criterion for testing truth, and specific injuries need to be tested.

An arrow target, test the new. The stability of the thunderbolt is that a piece of pork is hung on one side of the target, and leather armor and armor are hung on one side, which is used to detect the damage of the thunderbolt after exploding.

Rows of planks are erected between the point and the target to detect the damage range of the debris.

After lighting the fuse, the cold front shoots a new . Thunder Arrows.

Boom!

This time the sound was obviously higher than the last time, and even if the gunpowder sealed by the wooden arrow exploded, it could not produce enough kinetic energy, and the iron sealed one was different.

Tie Sheng's carefully crafted arrow shaft was gone, and the twine was laid on the wooden board to make an arrow target, and at this time the center had been blown out of a hole forty or fifty centimeters in diameter.

Leng Feng fiddled with the pork, which had three more deep scratches and a hole that was almost through, and a fragment of an iron arrow on the other side slightly showed its head.

Zhang Zhongqing looked at the damage to the leather armor and armor.

The leather armor was naturally easily penetrated, but the armor was strong enough to block a few fragments, and three or four fragments could only be nailed to it, but could not penetrate.

Zhang Zhongqing said with emotion: "The power is almost impossible, this kind of armor can't be penetrated." ”

Leng Feng suddenly glanced at Zhang Zhongqing: "Big brother, don't you look at what kind of armor this is, Mingguang armor!" If you want to penetrate it, you have to have a gunpowder bullet with a big head! ”

I don't know what Zhang Zhongqing was thinking, and suddenly patted his head: "There is also a shock wave!" Let's go, let's see if Tiesheng has the next one, let's see what damage the shockwave can do to the people in the armor! ”

Zhang Zhongqing is this virtue, sat up and walked, stood by the iron furnace and watched the iron sheng create the next finished product, and then took the arrow to make a thunder arrow and then went to the experiment.

……

Royal Palace Gardens

Li Shimin looked at the finished thunder arrow and nodded repeatedly, he had seen the power of gunpowder bullets, and the power of thunder arrows was also good.

"Zhongqing has worked hard, has this thunderbolt experiment?"

Zhang Zhongqing hadn't closed his eyes for two days, his eyes were bloodshot, and when he heard the emperor's question, he asked his subordinates to bring the unlucky piece of pork.

"Your Majesty, please see, this is pork placed next to the arrow target, and when the thunder arrow exploded, fragments of iron arrow shafts flew in all directions, and three fragments were cut through the pork, causing a gap of two to three inches long. There was a fragment that went straight into it, and it could be penetrated. ”

Li Shimin also ignored the sour smell of pork, and personally opened the mouth with chopsticks to check it.

"Not bad! When a man without armor is shot by a thunderbolt, not only will he be left without a way out, but the people around him will also suffer. What if it's armor-protected? ”

The set of Mingguang armor was lifted up, Zhang Zhongqing pointed to the Mingguang armor and said: "The fragments can penetrate the leather armor, but not the transparent light armor, but if the arrow explodes on the edge of the Mingguang armor, the people in the Mingguang armor are also like being hit by a galloping carriage, it is estimated that they will either be killed or injured, but the landlord does not allow us to experiment with real people, and the specific effect is unknown." ”

Li Shimin was itchy when he looked at the thunder arrow, and he wanted to try its power, but after all, this is a palace, and it is not good to hurt people......

Zhang Zhongqing looked at the emperor's expression and knew that the emperor wanted to try, and couldn't help but say: "Your Majesty, the effective killing range of the thunder arrow is within 100 steps, and there are many plants and trees in the imperial garden, you can try it!" ”

"Really?"

Li Shimin was pleasantly surprised, took the bow from Zhang Zhongqing's hand, and asked, "How to shoot?" ”

Zhang Zhongqing made a half-bow gesture and said: "Your Majesty pulls the half full moon, and after the minister lights the fuse, he must shoot the arrow in the blink of an eye!" ”

Li Shimin pulled the bowstring and tried it, before he put on the arrow and motioned for Zhang Zhongqing to light the fire.

Laugh at!

Li Shimin's archery skills are not bad, the moment the fuse is ignited, he pulls the bow like a full moon, and shoots the thunder arrow at the place where no one is around!

Sou!

Boom!

The queen's beloved cluster of peony flowers was destroyed by a thunderous arrow of Li Shimin before it bloomed!

Li Shimin was very satisfied with the power of the thunder arrow, and said to Zhang Zhongqing: "You make a batch and secretly give it to Zhang Wen, so that he can experiment with the effect on the battlefield!" ”