At this time, Qingque and the next two were busy with their work in the laboratory of the townhouse, Qingque was wiping with a steel pipe in one hand and a rag in the other.

And then he was polishing a small part, very carefully and carefully, and after polishing, he took a caliper and measured it, for fear that something would be wrong.

"After that, we're all pretty much done, as long as these parts are ready, we can assemble them, only Brother Jing's gunpowder materials are missing, and I don't know if Brother Jing will let us improve the gunpowder." Qingque watched as he wiped the steel pipe.

"Qingque, you can rest assured, Brother Jing has promised us a long time ago, as long as we do experiments, we will definitely give us gunpowder materials, Brother Jing said, as long as we build this musket, we will definitely be able to improve the gunpowder, but Qingque, are you sure you can change the gunpowder?" Then he stopped what he was doing, raised his head and looked at the green finch and asked.

"Then, don't worry, as long as there are gunpowder materials, I can improve them, and you don't look at who I am, I am the smartest person in Datang." Qingque boasted excitedly to the following.

Maybe Qingque is a little boastful, but then he has some belief in Qingque, and the previous brass musket, but Qingque made it himself, although he also participated in helping, but it was just a small job, Qingque is in the heart of Jizhi, it can really be compared with Fang Jing, although it is a little far behind, but I think that as long as Qingque is given some time, he will definitely be able to do it like Fang Jing, he will have a lot of knowledge.

"Okay, as long as you can improve the gunpowder, then we will go to Brother Jing to give us the materials, and then this musket will definitely be able to hit farther, and it can be more accurate, but I don't know how to get this iron ball." After listening to Qingque's words, he nodded in response, but he was worried about the matter of the iron bead in his heart.

"Then, don't worry, I've already sent a letter to my uncle, and when the time comes, as long as my uncle gets me iron beads, then this projectile can be solved, but this steel pipe, I haven't figured out how to build it, but I also wrote to my uncle and they tried to do it." Qingque had already written a letter to Chang'an earlier, as for whether his uncle Changsun Wuji had built a steel pipe, then Qingque and they could only wait for news in Fangjia Village, but as far as Tie Zhuzi was concerned, it would not be too difficult to think about.

"That's good, when we're on vacation for a while, we'll have more time to experiment with this musket." After that, there was no opinion, and as for who Qingque's uncle was, he didn't care, he just wanted to build this musket.

Before dinner, Qingque and the two of them returned home, and after eating, they sat in the hall to rest and eat, and by the way, they asked Fang Jing about some ideas or news about muskets.

"Brother Jing, we are almost ready to build a musket, but now there are no gunpowder materials, we can't make gunpowder, and my uncle hasn't entrusted someone to send the iron beads yet, Brother Jing, do you have any good way to get the iron beads?" Qingque sat next to Fang Jing and looked up at Fang Jing.

"Iron beads, you need to find a way, I won't tell you, besides, experimental experiments, isn't it just growing up in mistakes, as for how to do it, I don't care, as long as you report to me, I can provide you with some things, but there are some things that you need to figure out." After Fang Jing listened to Qingque's words, she thought that the musket had reached the finishing stage, and as for whether it was good or not, she had to wait until the experiment to find out.

"Brother Jing, when did you provide us with the materials for this gunpowder, the muskets are almost made, but if there is no gunpowder, the muskets are useless, and I still have to improve the gunpowder." Qingque didn't care about what Fang Jing said, and directly asked Fang Jing for gunpowder materials.

"This gunpowder material, I only temporarily provide some experimental use, as for the future gunpowder materials, you still need to solve them, find your father and your uncle to solve them, as for the gunpowder materials they provide to you are not qualified, then it is not my business, if it is not qualified, you have to find a way to purify, find a way to experiment." Fang Jing had promised them that when they needed gunpowder, they would need to provide them with some materials, but how much it would be up to Fang Jing to decide.

"Okay, then I'll write a letter to my father in a while and ask him to get me some gunpowder materials, but when the time comes, Brother Jing, you have to write a few words for me in the letter, otherwise my father won't give me these materials." Qingque had his thoughts, could he ask for gunpowder materials, so he thought of asking Fang Jing to write a few words in his letter, so that Li Shimin could send him some materials.

"Yes, when the time comes, just bring the letter to me and read it." Fang Jingdao didn't think much about it, and nodded directly in agreement.

"Brother Qingque, what experiments have you been doing lately? Can I go check it out? Lizhi dragged the hairball to play in the hall, and after hearing the conversation between Qingque and Fang Jing, she trotted over directly, and asked Qingque with an expectant face.

"Lizhen, this is not good, the laboratory over there is for me and the follow-up, what if you go in and make trouble for me? Brother Jing has an explanation, this laboratory can only allow me and the next two to enter, and no other personnel are allowed to enter. Qingque looked at her little sister and refused directly.

"If you don't show it, you won't show it, I have hairballs, and you don't have any." After being rejected by the green finch, Lizhi felt a little unhappy, approached the furball, dragged it over, and said to the green finch.

"Brother Qingque, Meng Jiang and I also have Wukong, and we won't let you play." Dexian also approached Lizhi with the little monkey in his arms and demonstrated to the green sparrow.

Qingque doesn't care about the three little sisters, in his heart, there are only muskets, gunpowder, and iron beads, and he doesn't care about hairballs and hairballs, Wukong and Wukong, and he has long been out of this age that needs pets.

Fang Jing and Chen Erlin looked at these little babies, looked at each other, and laughed, and the Qingque brothers and sisters were all stunned on the spot, not knowing what Fang Jing was laughing at, let alone why they were laughing, so they had to hold their pets and continue to play.

Two days later, one morning on the weekend, Fang Jing took some gunpowder materials and came to Qingque's laboratory.

"Qingque, this is the material of gunpowder, for the time being, there are only these, when you are improving, you must stay away from any open flame, and these materials cannot be kept private, after they are used up, come back to me." Fang Jing was worried that these two little babies didn't know the height of the sky, and the improvement of gunpowder might be just a matter in their eyes, and they didn't realize the danger.

"Brother Jing, we know, we won't experiment with gunpowder in the laboratory, we will conduct experiments outside, and besides, Brother Jing, you're not here, and we can't hide the materials of gunpowder privately." After Qingque took the materials from Fang Jing's hand, he assured Fang Jing.

"Okay, then you can try to improve the gunpowder, I'll watch from the sidelines." Fang Jing didn't say anything anymore, and sat on a stool not far away, with her back against the wall, squinting and falling asleep.

Qingque and the two followed, and didn't care about Fang Jing, they directly separated the materials of gunpowder carefully, took a small scale, weighed the materials, and then poured them on a piece of white paper, and went to weigh other materials.

Fang Jing leaned against the wall, although it was a knock and a sleep, but her eyes kept squinting at the operation methods of Qingque and the two of them, Fang Jing would not rest assured that these two little babies would improve any gunpowder, this matter was already difficult for the two of them, not to mention that they were still two little babies, and they didn't have too much professional knowledge, this was really going to make a big incident, and Fang Jing couldn't help it if he wanted to get rid of responsibility.

Fang Jing looked at the cautious appearance of the two of them, it seemed that they also knew the danger of these materials, as long as they knew that there was danger, it would save Fang Jing from bothering to speak.

Qingque proportioned again and again, weighed again and again, and mixed together to form ordinary black gunpowder, and then began to record something on the paper, Fang Jing estimated that he was recording the value of the ratio, but Fang Jing didn't want to see it, this matter was up to the two of them to operate, he just came over to be a supervisor today, and he didn't need to express any opinions or opinions.

Half of the three materials have been used, and Qingque has already matched at least ten proportions, Fang Jing's eyes are protruding, where is this ratio, this is an experiment, it is estimated that Qingque wants to experiment with a more accurate numerical ratio, or Qingque wants to experiment a few more times, so as to verify the idea in his heart.

Half an hour later, Qingque and the others took the finished bamboo pipe and invited Fang Jing to go out to experiment with the gunpowder ratio in the bamboo pipe, Fang Jing followed out and experimented in front of the open space of the row house, Fang Jing didn't care, anyway, the open space was quite large, and it was difficult to blow up anything.

The ten bamboo pipes were marked by the green finch, and the experiment began one by one, with the muffled sound of 'bang bang bang', the ten bamboo pipe experiments were completed, and then, the green finch took a brush and began to record the data of the experiment in a booklet.

"Fang Jing, what are you doing? Is there something going on with such a loud noise? Sun Simiao and the others were shocked by the noise just now and ran out, and when they saw Fang Jing, they didn't know what they were doing in front of the clearing.

"Mr. Sun, it's okay, we're doing some experiments to verify some things, Mr. Sun, Mr. Miao, I'm sorry, the noise just now is indeed a little loud, we won't experiment here in the future, please forgive me." Fang Jing hurriedly apologized to Sun Simiao and them, he really couldn't say anything about this matter, after all, it affected others, and the noise just now was indeed a little loud.

"Fang Jing, King Yue, what are they doing? These days, we are always seen tinkering in this room or something, and we are not allowed to go in to see it. Sun Simiao's curiosity was aroused, and he directly raised his legs and came to the gate of the laboratory, wanting to go inside and take a look to see what Qingque and the two little babies were doing.

"Mr. Sun, this room is a room for their experiments, except for the three of us, no one can enter, please forgive Mr. Sun." Fang Jing hurriedly spoke out to stop him, he was afraid that after Sun Simiao entered, he would disturb Qingque's thinking at this time, and Qingque had his own ideas, maybe such an interruption would make him take more detours.

"Fang Jing, then I won't go in, isn't there anything secret in this room? Can't even go in and see? Although Sun Simiao didn't enter the house again, the curiosity in his heart was even greater, he kept guessing in his heart what Qingque was doing something about medicine, but he never thought that Qingque had no interest in medical skills at all.

"Mr. Sun, don't inquire about this, this room belongs to Qingque, and some things are still dangerous, just the noise that happened just now, so Mr. Sun should not break in in the future, and save things." Of course, Fang Jing didn't want Sun Simiao to enter the laboratory, if he really wanted to go in, many things would be discovered by Sun Simiao.

"Alright then, let's go back to the house." After Sun Simiao listened to Fang Jing's words, he didn't ask any more questions, knowing that he couldn't enter here, so he could only go back to the house and continue their medical discussion and research.

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