Chapter 968

They promised to practice embroidery with Yao Feifei every day on various materials. In order to succeed in embroidery on light materials such as plain gauze, they started various experiments.

After cleaning every day, Xu Jiu goes directly back to his room to have a good sleep. Otherwise, he is just wandering around the ancient town, which is totally like a young master. After getting used to it, Professor Zheng began to choose to ignore it.

"Elder martial sister, otherwise, let's try on the cicada wing yarn?"

Promise even began to practice embroidery on paper, but the fiber and cloth of the paper are different in the end, so the feeling of coming out is also very different.

And let promise feel the lightest material, it is only cicada wing yarn.

Cicada wing yarn, as the name suggests, is as light and thin as cicada wing. However, the success rate of embroidery on this material is not high. Once it fails, the whole piece of cicada wing yarn will be destroyed.

The key is that although the cicada wing yarn can be taken out, it is also expensive, and it is more difficult to make than it. It is only made of plain yarn.

Yao Feifei was promised to look forward to the look of the hook, but really from the Yao grandmother's eyelids to get a half foot cicada wing yarn, it is simply extremely difficult, she hesitated.

Promise like a little fox like, eyes drop slip around two circles, lips rippling up a smile.

"Elder martial sister, we don't have to go to grandma Yao. Elder martial brother Lu has a lot of discarded silk. Let's take it and use it ourselves. We don't have to waste it."

Although the whole plain silk garment has been scanned and analyzed by X-ray, it is obviously not so easy to achieve the effect of plain yarn garment. Therefore, a large amount of silk is discarded every day.

Yao Feifei's eyes brightened and thought it was a good way.

Granny Yao's existing cicada wing yarn is exquisite. It's a waste for them to practice. But it would be perfect to weave some cicada wing yarn out of waste silk to practice.

Promise and Yao Feifei said dry, the same day with Lu Qingyu to get silk.

Lu Qingyu looked at the bag of waste silk and reluctantly handed it to him. "Is it because this silkworm has undergone thousands of years of evolution, so the silk it spits out is not the same as the previous one. The thickness of the unearthed silk can't be reached at all."

Looking at Lu Qingyu's helpless face, Yao Feifei felt a little distressed. Although it was a division of labor and cooperation, it was their research project in the final analysis. She opened her mouth and wanted to say a few words of comfort. Realizing that there was a promise nearby, she shut her mouth in silence.

Promise slightly raised eyebrows, realized that he was a big light bulb of several hundred watts, immediately excuse to leave, leaving enough space for two people.

Yao Feifei saw only two people, finally opened his mouth, the tone is very gentle, "you don't worry, there will be a solution."

Lu Qingyu nodded and tried to pull out a smile. However, the melancholy mood between his eyebrows and eyes could not be changed.

Promise to sway to the ear room of silkworm rearing, the pace is brisk, but the brain is all about how to spin out the material that is closest to the plain yarn.

It's been several months since silkworms were raised here. When it's cold, we specially created a suitable temperature for silkworms to spin silk.

However, such a long time of breeding, but has not been able to achieve the desired degree of silk fiber, is also a big problem.

"Hello, Professor Zheng!" Promise to wave politely.

"What are you doing here?"

Xu Jiu and Professor Zheng clean up the feces of the silkworm, while responding to the promise, Professor Zheng looked at the promise, proud of the face, completely ignored her, continue to play with mulberry leaves.

Promise to shrug her shoulders, the old man, she is not waiting for it!

"Brother, is there a lot of discarded cocoons here? My elder martial sister and I want to make it into cicada wing yarn to practice

Xu wine nodded, indeed, every day to lose a lot of cocoons, he looked at Professor Zheng, see Professor Zheng did not mean to deny, "you wait a moment, I'll go to the laboratory to get it."

Promise to see Xu wine leave, turn to see the lovely silkworm baby, with mulberry leaves tease.

Professor Zheng looked at the promise and wanted to speak, but he saw that she was totally invisible. The old man snorted angrily. He stopped talking to him and did not speak to her. Hum!

Professor Zheng is a proud old man. The more polite he is, the more arrogant he will be. But if he wants to say anything, he has to wait for others to ask. Therefore, at this moment, she will not give Professor Zheng a chance to speak.

Promise to work harder to tease the silkworm baby.

Professor Zheng blew his beard and glared, but promised that he would not look at him. In an instant, he regretted why he shook his face when she entered the door.

"These are all tested and can't be used. You can use them first. I won't throw them away and send them to you."

Xu Jiu came over with a bamboo basket and looked at the colorful cocoons. He didn't know any fiber or inspection. He just felt that it was wasteful to raise so many silkworms and cocoons every day.Promise looked at the silkworm chrysalis. He could not help frowning. Suddenly, a white light flashed in his head. A very naive idea appeared. Although he didn't want to talk to Professor Zheng and let him step down, he felt that his idea might help the project, "Professor Zheng, these silkworms are too fat!"

"What?"

Professor Zheng and Xu Jiusheng questioned with one voice and felt that to promise to say these words at this time was totally stupid.

"What have you found, nono?"

Yao Feifei and Lu Qingyu, who heard this just after entering the door, looked at each other and asked questions. After spending so many days with the promise, she felt that the promise was not a girl who could speak casually.

The promise nodded forcefully, "Professor Zheng, is it because the cocoons produced by these silkworms are too thick after being treated, so they can not be used and can not reach the ideal fiber level?"

The more I think about the promise, the more I feel that my ideas are reasonable. In my eyes, all of them are shining like stars.

Professor Zheng frowned, obviously did not want to answer the promise of such a sudden question, the idea of children, in his view, is completely nonsense.

"Now the silkworms are too fat, so the silk they spit out is relatively thick. If it's a thinner silkworm, it's better to be a wild silkworm. Will the silk come out like that become thinner? After all, there was no such good greenhouse conditions in ancient times, and silkworms were seasonal and would not be so plump. "

The more he said, the more excited he was. He even wanted to practice it immediately. However, seeing Professor Zheng's face getting darker and darker, he couldn't help but jerk at the corners of his mouth. "Of course, I'm just a little immature suggestion. I need Professor Zheng to see if it's feasible."

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