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This waited for more than an hour, during which Yeqing took Ruoxuan to have lunch at a nearby restaurant, and when he came back, the knife master had already made the big knife

Looking at the bright big knife, Ruoxuan's eyebrows lit up, and she thought about trying the knife first, but after thinking about it, she decided to go back to the Yangtze Ranch

Although she didn't know if the gray stone powder was useful, she didn't want to be spied on by anyone if there was or not

This gray stone powder is actually lime, and when ancient people built houses, they would always take some lime and tung oil mixed together, just like modern cement, and glue the stones together, so that the house can be built more strongly, and can withstand the sun, rain, wind and rain

After putting away the big knife and returning to the Yangtze Ranch, Ruoxuan took Ye Qingying back to the room and asked him to order someone to find another new big knife The two knives were handed to him: "You try to take these two knives and cut each other to see what is the difference between the two knives."

Ye Qingying didn't think too much, picked up the knife, and used the same force to make the two knives hit each other, and with a "bang" sound, the big knife from the hands of the subordinates was actually split in half by the big knife they brought back from the armory

His eyebrows frowned slightly, and he looked sideways at Ruoxuan, who was obviously shining with joy in his eyes, and said in surprise: "What's different about this knife, what did you sprinkle into it?"

"I can't tell you yet" Ruoxuan glanced at him mysteriously, and couldn't help but say, "You can order someone to bring a few newly forged knives over and try it."

Ye Qingying took a deep look at her, and then ordered someone to get a few more swords that they had just bought, and even asked them to go to the armory room where they went today to get a few more newly forged broadswords and come back

After trying them one by one, the big sword that Ruo Xuan retrieved was really sharper than the other swords, although after trying it a few times, the big knife gradually cracked, and it was not as good as it was at the beginning, but with Ye Qingying's martial arts cultivation, it was easy to tell the difference between the weapons

"What the hell is in there?" even he couldn't help but get excited, "It's the gray stone dust you want to come back from on the road today."

Why didn't he know that adding a little gray stone powder to the sword would make the sword so good, so that this girl had so many flexible and useful things in her head

"This gray stone powder is not pure enough, and the sword that is refined is not a good product," Ruo Xuan seriously thought back to what he had learned in modern times

"How can it be considered pure gray stone powder" Ye Qingying immediately became interested in this matter If she can refine the weapon to be sharper, then it will definitely be of great benefit in the war She worked so hard to find a way to improve the power of the weapon She wanted to help Mu Han and them

Catching up with his snooping gaze, Ruoxuan just pursed her lips slightly, turned her face away, and said softly: "Calcining this gray stone powder again and removing the impurities can improve their purity by a few percent."

"I'm afraid it's going to take a lot of manpower and material resources," Ye Qingying pondered her method

Improving the purity of greystone dust was an idea that no one had ever come up with before, and she was able to come up with it

"Is this what you're looking for?"

Ruo Xuan nodded, she didn't plan to hide it from him in this matter, she was just trying it today, but she didn't expect it to be useful

In this way, as long as the purity of the gray stone powder is refined to make pure lime, and when the powder is put into the molten iron in a certain proportion, more impurities of the molten iron can be removed in the process of building the weapon, so that the iron sword will become sharper

"I ......"

"How" Seeing her thin lips move slightly, she looked like she wanted to speak and stopped, and Ye Qingying walked towards her, wanting to reach out and hold her in her arms

Ruoxuan unconsciously took two steps back away from him

Ye Qingying frowned, and a hint of displeasure flashed in his eyes: "You must know that you are here with me now, if I imprison you here forever, you yourself will not be able to return to them no matter what, so the little methods you come up with will never help them."

Ruo Xuan gasped, angry at his threats to herself, but she also knew that what he said was the truth, but she didn't understand why he had to imprison her so much

What she liked about her, she couldn't believe it until now, and she never thought that liking someone would force her to stay with her so much against her will

She took a deep breath, took the initiative to approach him, looked up at his bright eyes, and said softly: "Didn't you say that you wanted to cooperate with Mu Han and them?"

"It depends on your performance," Ye Qingying snorted coldly with half-squinted starry eyes

She bit her lower lip and understood what he meant

Helpless, the little hand reached out and gently hugged his sturdy waist, and the words contained a strong expectation: "Help them, I...... I won't leave you."

"That's true," he said, reaching out his big palm and hooking her chin, looking down at her small, pale face

Knowing that she didn't want to in her heart, just for Mu Han, they would rather be so wronged But he didn't mind this kind of grievance, he said it, all he wanted was the result:

"You have to think about it carefully, you must do what you promised me, if you betray me one day, I will definitely make you miserable, life is better than death"

Ruoxuan's heart trembled violently for a while before her breath calmed down, she raised her eyes and looked at him seriously, and said seriously: "I'm already like you anymore, they are afraid that they won't want me anymore, I owe them, I can only find a way to pay it back."

If it weren't for himself, Mu Han would not have gone to the Hades Palace alone, and he would not have been severely injured under Feng Jiuqing's sword, and the Hades Palace and the Mu family army would not have been forced out of the Xia Dynasty

It's all her fault, whether they want her or not, and she's not going to give up on them in this life

......Seeing his thick eyebrows frowning, she blinked before she said softly: "Qingying"

This title finally dissipated most of the anger in the arrogant man's heart, and she said: "If I am willing to stay with you, you will help them, don't lie to me."

"When has I ever deceived others?" "There is a principle of doing business in business, and if you promise others, you must always do it, otherwise it is impossible for him to develop to such a scale in just a few years

Integrity is especially important in the business world

Ruo Xuan knew that she was too villainous and knew that his dignified Ye clan boss would definitely be a man of his word She took a deep breath before saying seriously:

"I'd like to try again, if the way you make weapons today is really possible, can you promise me to build a batch of weapons for them?"

Ye Qingying didn't immediately agree This is not a trivial matter after all, to build a batch of weapons for an army The scale and quantity are absolutely so large that ordinary people can hardly estimate

The price is not small