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As the confidential seal was stamped, Tang Zheng's design drawings had completely disappeared on the drawings.

After sealing it, even Lu Huang himself couldn't see it. Unless he used star power to unseal the drawing, no one could see the contents in the drawing.

However, Tang was the designer, so of course he remembered every detail. Lu Huang heard Tang Zheng explain it in detail and remembered every detail clearly.

"To be honest, your dagger is an unprecedented challenge for me! Not to mention, your design drawings, from the pop-up device of the dagger to the small thread of the hanging fan pendant, all require that they can be replaced, which undoubtedly increases the challenge..." Lu Huang was not modest, but was just talking about the facts, and Tang Zheng could see that there was a wonderful light shining in his eyes.

Then, Lu Huang took the paper and pen.

He was like entering another world.

Tang Zheng’s fan dagger is incomparable and his imagination is unprecedented, but the more exquisite the thing is, the more difficult it is...

Not to mention anything else, the fourteen fan bones must resonate with the star power. It is more than dozens of times more difficult than simply resonating with the star power of a dagger!

The most difficult point is that Tang Zheng requires that every component can be replaced!

Of course, Lu Huang knew that he was considering upgrading this equipment for two-star, three-star, four-star or even higher stars, but the replacement undoubtedly made it more difficult to maintain the resonance of the star power!

However, Lu Huang did not mention these specific details again.

Tang Zheng has already come up with the design structure, so of course he has to solve the difficulties in the future. Otherwise, what else would Tang Zheng have to do with him?

The first step in casting. The drawings, Tang Zheng has solved them.

Immediately, what Lu Huang did was the second step - to determine the materials.

"The material is divided into nine parts, first of which is the main material of the fan bone, fan surface, machine spring, hidden weapon, dagger, and silk string..." Lu Huang picked up the pen and wrote it on the paper.

The names of the same materials were written on paper by him. He looked up one after another, crossed out a few, and then wrote them again. This way, it lasted for more than an hour.

In the end, the 129 main materials that Lu Huang determined were re-copied onto another piece of paper.

After he completed the main material, he found that Tang Zheng had been waiting for a long time and started practicing martial arts on his own...

Lu Huang didn't say anything, but continued to lower his head, took a new piece of paper, and confirmed the auxiliary materials and special materials.

This dagger can attack and defend with advancement. Therefore, it also requires sharp offensiveness and strong defensiveness. The choice of materials is far less simple than the weapons he cast before.

"It's time to challenge tradition..." Lu Huang thought for a long time and started writing on the paper again.

Looking at the materials he wrote, even Lu Huang, who was used to various precious materials, his heart beat a little faster.

expensive.

Too expensive.

It’s not that one is very expensive. Instead, there is not a single piece of material inexpensive.

However, he could no longer reduce the cost. Fengrui and Dunshou were two completely different requirements. It was not that he had high requirements, but that Tang Zheng's design itself had too high requirements for materials.

Lu Huang has seen priceless weapons...

But he never thought that one day he would cast a priceless weapon that was priceless only in terms of cost!

Materials are the basis for casting.

Lu Huang was thinking about the choice of materials from noon to dinner, and he had devoted himself to the design and did not notice the passage of time at all...

Until, Tang Zheng's stomach whined.

"..." Lu Huang raised his head and saw Tang Zheng's aggrieved face.

"I didn't have lunch," Tang Zheng thought for a while, and added, "There is breakfast... and yesterday's supper."

"..." Lu Huang looked embarrassed.

"Or why I'll invite you to have something first?" Tang Zheng certainly knew that this kind of technical mate is now full of casting and can't hold it in a word.

Lu Huang was not polite and nodded directly.

After the two went out to eat something casually, Lu Huang rushed back again. It took more than an hour to determine the choice of materials...

"Okay." Lu Huang gave Tang Zheng two full pieces of paper, "Considering your needs for star-guiding stars, astrological signs and fan daggers, I have confirmed these materials, and the budget may be a bit high..."

Tang Zheng took it and saw that the names of hundreds of items were all that he had never heard of.

However, no matter how much money or energy you spend for this fan, it is worth it!

Because the Tianluo Gui Needle Box, the Jueying Dagger, the Seven Tough Lock Love Stitch, and the Xiguang Dun are his regrets. He lives for a lifetime and if he still loses to others in equipment, he will be too unfair to himself.

"Don't worry, purple gold is not a problem." Tang Zheng put away the list.

Lu Huang nodded and breathed a sigh of relief.

Most of the 566 materials he wrote were not less than thirty taels of purple gold. It can be said that any one he bought would be enough to make a middle-aged family with slaves and servants lose everything.

Although he knew that Tang Zheng was rich, he was not sure how rich he was.

Just when he heard Tang Zheng say that there was no problem with money, Tang Zheng took out two cans of water from the bag of storage: "Drink some water, let's talk about it slowly."

Lu Huang focused on design all afternoon and was indeed thirsty. He took the water and took it...

A mouthful of warm water entered his throat, and then he suddenly lowered his head and looked at the jar on his hand: "Yaoshan Wenlu?"

Tang Zheng nodded: "Drinking warm water is good for your body and mind health!"

"..." Lu Huang's tongue was not clear and he could not complain like Ban Yilou. However, he really didn't doubt Tang Zheng's financial resources at all.

Lu Huang also drank a lot of tea made by Yaoshan Wenlu, so he could taste the taste of Yaoshan Wenlu at the first time.

However, he had never seen anyone who drank Yaoshan Wenlu so casually, just opened the jar and drank it directly!

"I always think that it is a waste to use Yaoshan Warm Dew to make tea." Tang Zheng of course also saw what Lu Huang was thinking and said casually, "The preciousness of Yaoshan Warm Dew lies in its just right temperature. When it is boiled, it will be completely destroyed. Just like casting, you cannot constantly over-treat it to destroy its essence because of its valuable materials..."

"..." Lu Huang's eyes suddenly widened, and even Mo Feng on one side opened his mouth slightly and didn't say a word for a long time.

Over-treatment!

Eliminate the essence!

Eight words are like enlightenment, as if they have solved the mysteries of failures in many of their previous failures!

Lu Huang's eyes at Tang Zheng also changed again and again.

The wisdom of casting is everywhere...

A truly attentive caster can hit the essence of casting even from a small cup of water!

Lu Huang didn't say anything, picked up the jar of Yaoshan warm dew and drank it clean in one breath: "No matter how precious the water is, it is used to drink... Thank you for your advice!"

Tang Zheng waved his hand and smiled and said, "How can this be called "instruction"? He just said something casually."

...

The time in Bailianfang seems to pass much faster than outside.

Lu Huang told Tang Zheng one by one about the characteristics and uses of each material, why should we choose it over other substitutes, and where they were purchased, it was already midnight.

Tang Zheng simply did not go back to Xinglai Inn and stayed overnight in Bailianfang.

After a hurry to have breakfast the next morning, another whole day of research and adjustment...

There are 566 pieces of materials, including more than 300 pieces of Bailianfang. You can buy them directly, and there are 200 pieces. You can ask Jubao Pavilion to transfer the goods, and the remaining six of the most precious pieces. Lu Huang directly sent Mo Feng to the black market in Feishi City to bring back the two pieces. The two pieces are Lu Huang's private collection. He did not hesitate to prepare to invest in his unprecedented work...

In the end, there were only two pieces of materials left, and even Bailianfang, which had the most complete casting materials, had no choice.

Red spider golden silk, Fu Bi broken Chen stone!

"The fan surface of our fan must be as light as tulle and easy to fold, but it must be as solid as gold and stone, and can withstand a huge blow. Only one thing can do - red spider and golden silk."

"Well..." Tang Zheng nodded.

"Red Spider Cold Silk is a heterogeneous species that is hybridized by two very ferocious poisonous insects, the flame red spider, and the ice crystal cold silkworm. The silk thread woven by the red spider Cold Silkworm is very tough, without swords and swords, water and fire, and has a good resonance of star power. The reason for its rare reason is that the heterogeneous species such as the Red Spider Cold Silkworm has a very small chance of hybridization and survival, and it cannot reproduce itself, and its lifespan is extremely short, which leads to the very small yield of the Red Spider Cold Silkworm."

"Well, that's it..." Tang Zheng probably understood that it was like a mule that hybridized with horses and donkeys, and a lion and tiger beast that hybridized with tigers and lions. It had excellent performance but could not reproduce.

Of course, Tang Zheng was not ready to discuss biology issues in front of a craftsman...

Lu Huang continued: "As for the Fu Bi Shattered Chen Stone, it is rumored that when the Purple Gold Emperor 'broken all the hundred and only the main stars', he used one person' to smash all the stars that can generate star power except the fourteen main stars. Zuo Fu You Bi is one of them! Fu Bi Shattered Chen Stone, the broken and falling star remains, one less with one! The wreckage of these two stars can almost coordinate and resonate with the star power of all the main stars. Even if a little powder is added to the successfully casting equipment, it can improve the resonance of the star power a lot. It is the best auxiliary material for the best weapon to impact higher grades, no one!"

"Damn..." Tang Zheng had to be moved. Although most legends have a bit of an exaggeration, this stone is as good as Nuwa repairing the sky. "How could he need to use this kind of thing?"

"Even if I can coordinate the resonance of the star power when I cast it for the first time, without the Sui Bi Broken Chen Stone, it would never be possible to coordinate the resonance of the star power every time I replace the parts!" Lu Huang said confidently.

"Red spider golden silk, Fu Bi broken Chen Stone..." Tang Zheng silently recited the names of these two materials, "Then, are there any clues to these two things... Although there is no Bailianfang, there is always something, right?"

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I'm back, I'll pass it on in one chapter. Guoguo takes a little rest before coding the second chapter... Continue to ask for monthly tickets!

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Chapter completed!