Xu Han's words suddenly made Bai Yan feel strong again. She didn't know where Xu Han's knowledge came from, but she believed her inexplicably.

In the next few days, Xu Han still left early and returned late, until the last critical moment, she simply lived in Baiyan Store and did not return to Lufu.

"The daughter of the world is still in the Baiyan store, is it ......?"

Not long after Zhang Lei received the news, she heard her master call her to go in, she didn't understand, Xu Han is also a loyal and righteous marquis after all, and she is also the master of the Wonder Corps, Lianzhou is so big in total, is it difficult for the master to worry about what will happen to her? As for asking three or four times a day?

"It's so late, you send someone over to take a look."

Zhang Lei secretly looked up at her master quickly, he was looking thoughtful, and she hurriedly retreated.

It didn't take long for the person sent out to return, and she directly asked the person to report to His Highness. Unexpectedly, it didn't take long for the door of His Highness's room to open, and she hurriedly followed. She would never ask Her Highness where she was, and this time although she guessed that His Highness should go to the Baiyan shop, she still had some doubts in her heart. Could it be that something happened to Xu Shinu?

Lu Mansion is in Dongcheng District, Lianzhou, while Baiyan's store is in Xicheng District. Thank? led a group of people through half of the city, because the leader had a token in his hand, the patrol officers and soldiers along the way retreated, not daring to interrogate, let alone block.

When there is still some distance from Baiyan's store, Xie? Grabbed the horse, turned over and walked towards the store.

The doors and windows of Bai Yan's shop were closed, but the whispering sound could still be heard inside. Thank? Raised his foot and kicked the closed door open, only to see Xu Han and Bai Yan's two heads coming together, muttering that they didn't know what they were discussing.

Hearing? Silky sac springs? Crabs?? What is the sled reef? Lofty? Pure? Qiang _ stood there with a calm face. Xu Han was stunned for a while before he asked blankly, "It's so late...... What are you doing here? ”

Bai Yan didn't know his identity yet, but seeing his temperament, he also knew that he was not an ordinary person. At this time, she only stood beside Xu Han stupidly and scratched her head.

"Where's Changyu?" Thank? Swept around, asked in a deep voice.

At this time, a head poked down from the beam of the room: "This." ”

Thank? nodded, and said as he walked in front of Xu Han: "Although Changyu is strong in martial arts, but now you are a thorn in the side of Lu Guo, you are alone, and it is late at night, you put yourself in danger, if Xu Hou has knowledge under the spring, what will she think?" ”

Xu Han opened her mouth and wanted to refute, but how did Xu Liuzhou fall for the poisonous plan of the Lu people, and how could she not know? Thinking of this, she had to soften her voice, tugged at the hem of his clothes, and said, "Didn't I forget the time for a while!" Besides, it'll be done right away! ”

Bai Yan hurriedly nodded and said, "Yes, yes, it's just one step away!" ”

Thank? Still with a cold face, Xu Han had an idea, took out the arm crossbow offering treasure he had made before from the side and handed it to him, saying, "Look at you, I have been studying this with Sister Bai Yan from you recently, and I plan to give it to you as a gift when the time comes!" ”

Bai Yan continued to nod on the side and said, "Yes, yes, it's almost successful!" ”

...... "Thanks?" Looking at the two pairs of eyes in front of him, he sighed, "It's better to go back earlier in the future, this is not the capital after all." ”

Xu Han's peach eyes bent, and he said with a smile: "Well, I wrote it down." Look at this thing! You won't be disappointed! ”

Thank? Only then did she take the arm crossbow from her hand, this small arm crossbow had been modified by Bai Yan again, and it could be loaded with six arrows, and after one was released, it was only necessary to turn it with your hand to continue to put down one arrow. It's just that after six arrows have been released, it takes some time to load them again.

"This is ......" The more I look at it, the more surprised I become, Xie? Turned his head to look at Xu Han.

"It's a crossbow." Xu Han's eyes burned.

As she spoke, she encouraged him to rehang a wooden disc on the wall, and sure enough, after aiming, she pulled the plate machine, and the wooden disc fell to the ground in an instant.

Not only him, but Wan Fang next to him was also stunned.

"With such an artifact, my Dayan soldiers will be fearless of the Lu State Iron Cavalry!"

Since that day, thanks? From time to time, I will go to the store with Xu Han to see the progress. Fortunately, Bai Yan's speed was very fast, and within half a month, the bed crossbow was researched by her, specifically, it should be called a three-bow bed crossbow.

Three-bow bed crossbow is also called "eight-bull crossbow", the arrow is made of hard wood as the arrow shaft, the iron piece is the feather, the world is known as "one gun and three sword arrows", the bed crossbow can also be fired "stepping arrow", when it is launched, it is magnificent, the arrow is like a javelin, the close-range launch can be directly nailed into the city wall, when the salvo is fired, the rows of pedal arrows are firmly nailed into the city wall, and the siege soldiers can climb up by this.

After Zhang Lei's guards tried it out, they immediately liked this kind of crossbow arrow, but this eight-bow bed crossbow was too cumbersome and required the cooperation of several people, which greatly reduced mobility.

In order to facilitate their personal combat, Xu Han equipped each of them with an arm crossbow. This arm crossbow is very lightweight, but the range is relatively closer, making it unsuitable for long-range combat. For this reason, those guards can't wait to carry this new weapon to the battlefield now!

"If you want to produce it in large quantities, I'm afraid that Bai Yan alone won't be able to keep it busy." Xu Han frowned.

Thank? His fingers tapped lightly on the tabletop, and he muttered for a moment: "Transfer people from the Ministry of Works, and they will all be at the disposal of Bai Yan." ”

"As far as I know, Zhao Yan, the secretary of the Ministry of Industry, is a meticulous and meticulous person, so it is better to let her find raw materials, let Bai Yan be in charge of refining, and take the assembly line, which not only prevents the leakage of the production method, but also prevents it from being stolen by unrighteous people."

"This method works."

After the discussion, thanks? Immediately wrote a letter and sent it to the capital quickly. If you want to produce in large quantities, you should naturally change to a larger place, and this place must be as hidden as possible.

Yuanzhou is the state town closest to the north in the whole Dayan, and the iron ore contained here is also the state town with the most iron ore in the whole Dayan. To the south of Wonju is Zhuzhou, and for comprehensive considerations, the place for mass production of crossbow arrows is set in Zhuzhou City.

Even Lu Huan didn't know about the bow and crossbow, and after Bai Yan was secretly arranged to leave the city, he went straight to Zhuzhou City. Zhao Yan, the secretary of the Ministry of Industry, also went to Yuanzhou and was responsible for transporting iron raw materials to Lingzhou.

Lu Huan seems to have heard of this matter.

"Your Highness, does the matter of iron ore still need to be considered again?" Since ancient times, iron ore has always been controlled by the imperial court, and the amount of iron produced must be strictly controlled every time, but now Xie? Not only did she send Zhao Yan, but she also kept it so secret, which made her a little puzzled.

"There is no need for the master to ask about this matter, so it is decided." Thank? raised his hand to stop her words, "How is Daddy Lu now?" ”

mentioning his father, Lu Huan sighed, thank you? said: "Your Highness has been delayed in Lianzhou for more than a month, life and death, and the rest depends on my father's creation." ”

Thank? nodded: "Well, tomorrow the Japanese Palace will set off for Beijing, Han'er...... She returned to Zhuzhou. ”

Lu Huan was not surprised, and said: "The minister once again thanks His Highness for saving his life!" ”