The quiet waters of the four fangs were surging continuously. Gu Qingyi was waiting for Tuoba Di and his party to return, and asked Feng Wenmao to escort Hong Mao to Taiyuan County to sell grain.

Feng Wenmao naturally disagreed, but Gu Qingyi took out the account book of the granary and showed it to him. Feng Wenmao didn't say anything for a while, so he had to pinch his nose and agreed.

The granary is at its bottom, which is not a good thing. There are still some days when summer harvests can never make everyone hungry.

Gu Qingyi also made a list and asked Feng Wenmao to help her buy some five-color soil. She planned to transform the weaving workshop and expand new channels for making money.

The sale of ready-made clothes is too slow, and the exquisite silk craftsmanship is complicated and the construction period is not short, and these are all expensive products. Who would usually pay for these things in such troubled times?

Therefore, Gu Qingyi is now focusing on the printing and dyeing technology that can produce large quantities of cloth in a short time. Compared with expensive cloths such as silk, silk, satin, cotton, and knots are much cheaper, and she can find ways to easily apply and fix colors, which is the fastest shortcut to mass-producing and making money.

Without chemical raw materials to help fix the color, you can only start with mineral dyes and natural dyes.

Gu Qingyi knows a little about the relevant techniques, and give it a try.

I knew it would have chosen chemical engineering at the university.

There is no if in everything.

Hong Mao and others left quietly in the middle of the night without disturbing anyone, especially Wang Zhengxin and others, who were even more unaware of it.

As soon as Feng Wenmao left, all the great responsibilities of guarding the fort fell on Dong Dacheng's shoulders.

Dong Dacheng:...

Who can he ask for?

The girl didn't give a word, but how could he do nothing?

It's so angry, but there's nothing I can do about it.

Dong Dacheng, who was so angry that he was a little toad, didn't know that the girl had figured out his temperament and deliberately put a trap on him. Dong Dacheng was so busy that he deployed the patrol guards of the fort overnight, and he was busy until the sun was over and the sun was over and he was breathing a light sigh.

The dyeing technique was called dyeing in ancient times. As early as the Western Zhou Dynasty, there was the profession of "dyeing people". There was a dyeing department in Qin and a dyeing agency in Han.

She also knew about this overview of time and space before, and had the dyeing process, but the technology was immature, it was prone to color, faded, insufficient dye, and underdeveloped color systems.

But this is not very difficult for Gu Qingyi. Given that this overlying dynasty probably borrowed from the Wei and Jin Dynasties, although this land was also overwhelming, she had already conducted investigations along the way and could compete with many regions in later generations.

In Fujian and south, the blue is the best in the world, Jiangxi Ganzhou, plant blue to make indigo, and the Sichuan and Shaanxi areas are full of red flowers. Although I cannot guarantee whether these plants will exist now, I can find them as long as I have hope.

In addition to plant dyes, there are also mineral dyes. In addition to these, the most important factor is the mordant method.

It’s like when dyeing red, aluminum salt is needed as a mordant whether it is madness or safflower. Natural aluminum salt is rare. In places without aluminum salt, other methods must be used instead.

Gu Qingyi knew a way to use ginger or tung wood ash instead of aluminum salt.

When dyeing red, you need a red flower cake. Whether it is bright red, lotus red, pink, silver red or water red, it is inseparable from it.

Gu Qingyi knew how to make red flower cakes. She had originally liked to do handicrafts, but she didn't expect that such a little hobby would become her shortcut to make a fortune here.

So, learning more can really save you life.
Chapter completed!