"Xilie, hurry up and go!" As soon as he came out of Zhaoyang Gate, Yang Qing took Guo Xi's hand regardless of his image and ran all the way towards the military camp.

"What are you doing in such a hurry? Aren't there three or four hours left? "Guo Xi didn't understand it very much, mainly because he was very uncomfortable being held by Yang Qing, and it was the soldiers of Jian Yuwei who guarded the door, and he saw a few laughing!" The Holy Authority approved our proposal to move the camp, and I will arrange for this. I won't get involved in the test explosion, right? ”

"Be prepared! We'll talk about moving to camp tomorrow! Yang Qing was thinking in his heart as he quickened his pace. To make a big one, test the effect before the official test explosion, last night's inventory is definitely not enough; It is necessary to find a large open space again to facilitate Xuanzong's observation and study; It is necessary to make a long lead to facilitate the ignition and throwing, and to calculate the burning time of the lead; It is better to make several dummies and test the lethality of the "grenade prototype" after it explodes......

Back at Yang Qing's dormitory, Yang Qing summoned Shang Han, Zhang Nan, Ao Kuan, Sima Lin and others and began to issue orders.

"Shang Han Zhang Nan, give you two hours, act separately, and collect all the saltpeter sulfur that can be found nearby for me! Go now! Fast! ”

"Yes!"

"Ao Kuan, please take a few people to find bamboo, find the thickest one, and cut three or five of them back. Give you an hour! ”

"Yes!"

"Sima Duwei, you go and gather the soldiers in the army who are familiar with woodwork, and make wooden people and horses, it is best to be ten or eight of them, not to be exquisite, just have a general appearance. Don't ask what it's for, I'll see it later! ”

"Yes!"

"Xilie, you help me find an open space suitable for testing explosions, the bigger the better, in short, a circle cannot be less than five hundred steps. Okay? ”

"Yes!" Guo Xi hugged his fists, turned around and left.

Yang Qing was stunned, why did he also give me this set? I saw Guo Xi suddenly stop, turned his head and asked in confusion: "Hey, you directed us all out, what are you doing by yourself?" ”

"Me? Do the lead! ”

Yang Qing remembers that the ordinary point of the lead, just like the kind used for earthen firecrackers, is quite simple. Saltpeter powder is sprinkled on the paper, rubbed, and then dipped in some rice milk, and after drying, it is a lead; The professional fuse is much more troublesome, black powder changes the ratio, increases the proportion of charcoal, reduces the amount of saltpeter, and forgets how much to add, but also wraps the gunpowder powder with a thread, and coats the outside with a moisture inhibitor, which is called completion. Of course, a professional fuse burns steadily and at a controlled speed, about one centimeter per second, making it the best choice for detonating gunpowder.

Yang Qing, who is not qualified to play the professional fuse at all, thinks clearly, of course, the professional knowledge must be handed over to the professionals to toss, and it would be good if he could make this earthen lead!

After pondering for a while, Yang Qing called a personal guard and told him to go to the room to get some rice milk or batter. He took out the saltpeter powder left over from last night, pulled out a piece of thick paper, cut it into three finger widths, and connected several strips, and the paper was as long as the case.

Then find a long wooden strip, carefully sprinkle the saltpeter powder on it, and then move the wooden strip parallel to the top of the strip, gently knock, the saltpeter powder will fall on the strip of paper to form a long strip, roll up your hand and rub it, a lead about one meter two long is preliminarily completed.

The guard came back with a big bowl of batter, and Yang Qing saw that it was a little thick, so he added a little water. After reaching into the bowl and soaking it, he gently brushed it on the lead and told the guards to take it out and find a shady place to dry. Then I did two more in the same way.

After the lead was dried, Yang Qing wanted to find a missing moment to time, but then he thought that the missing moment could not be accurate to the minute, let alone the second, it was better to be sure of the silent count in his heart, so he gave up. lit one. The effect is good, and the "sneer" burns happily, and it takes about a minute for the long lead of the case to burn, about two centimeters per second.

At this time, Ao Kuan came back and cut several bamboos, the caliber was much thicker than the one Zhang Nan found last night, and Yang Qing was a little distracted, thinking that Ao Kuan had the talent to engage in the logistics of terrorist organizations.

Then let Ao Kuan find some sharp pebbles and discarded arrows, and after everything was ready, Yang Qing began to fill this super firecracker himself.

Yang Qing cut off a bamboo tube that retained a bamboo knot, first loaded some arrowhead stones, and then stuffed a large ball of paper and pressed it; Pour all the black powder left in the morning, then take the lead **, stuff a large ball of paper and press it tightly, pour in the stone arrow, and finally stuff a ball of paper again, revealing a forty-centimeter-long lead, and the earthen bomb is completed!

At the critical moment, Guo Xi finally appeared, the place was found, there was a huge flat land on the shady side of the back mountain, deeply sunken in the valley, it was rare that there were no trees, all grass, and it was more than a thousand steps around the edge.

Yang Qing discussed with Guo Xi in a low voice, leaving only two guards to follow, hugged a few thick planks, took the bomb and set off.

After walking briskly for a stick of incense, turning a corner, Guo Xi pointed to the front: "It's here." ”

Yang Qing took a closer look, and it was indeed an ideal location for testing explosions. The terrain is open and open, and the original few trees have also been cut down by Guo Xi's orders, not afraid of causing fires. Last night's heavy snow soaked the mud, and it was difficult for the dead grass to burn.

Several people inserted the thick wooden plank they brought in the center of the open space, Yang Qing was worried that the lead was not safe, so he decided not to take the throwing method, and detonated it on the spot.

Ignited the remaining fuse himself to demonstrate the burning speed to Ao Kuan, and Yang Qing carefully admonished a few more words, and then retreated to the edge of the open space with Guo Xi and others, and nervously watched Ao Kuan go to light the fuse of the bomb.

Ao Kuan was also the first time that the eldest girl got on the sedan chair, and when she heard Yang Qing say it mysteriously, although her mouth was full of indifference, she was really nervous in her heart. I silently recited General Zuo Lang's advice three times in my heart, and tremblingly stretched out the fire fold and lit the underground fuse.

"Phew! ~~"Maybe the saltpeter powder at the head of this lead was a little too much, and as soon as it was ignited, Ao Kuan was horrified to find that the speed of the lead burning was obviously much faster than the demonstration just now!

I said in my heart, "My dear mother!" Ao Kuan threw down the fire fold and turned around and ran, and the desperate running posture made Yang Qing nod his head appreciatively after being stunned: "Xilie, Ao Kuan really ran fast, I think even your crow BMW is only ......"

"Bang !!"

Several guards behind him were completely unprepared, and they were all taken back by the loud explosion. After all, Guo Xi is a famous general in the army, and although it is also the first time to witness a powerful explosion up close, he is still calm as usual. Ao Kuan was okay, although he was taken aback, but anyway, he ran all the way back with a strained face, and the bomb exploded when he was still ten meters away from Guo Xi, and others couldn't see anything.

The planks that stood on all sides around the bomb flew up as soon as they were there, and they fell far to the ground. Thick smoke billowed out, and the pungent smell of gunpowder quickly spread, and Yang Qing and the others could smell it 100 meters away from the explosion site.

Guo Xi nodded appreciatively: "Amazing, amazing!" Let's go, go and see. After speaking, he shook his head at Yang Qingyi.