The drum is actually the modern centrifuge of later generations, in the Tang Dynasty there was a special shelf, with one end of the rope tied to the clay pot, holding the other end of the rope, rotating and shaking the clay pot, generating centrifugal force to squeeze out the fur, flesh and blood juice, this is the early application of the principle of centrifugal separation.

As for the tanning of leather, it is also called nitrate skin, through a series of processes and the use of some agents, so that the protein in the animal hides undergoes a series of changes, and the collagen undergoes denaturation.

The tanned leather is soft, firm, and wear-resistant, and not easily spoiled, so as to meet the daily needs of various leather products.

Everyone didn't talk nonsense, they took the order to go, Jiang Cheng looked at Li Zhi again: "Text, in this way, there is only one process left for the leather products to be dried, fortunately, there are still a few deer skins needed in Chang'an City, most of them still have to stay here for processing and sewing, and you will temporarily bring back dozens of deer skins, but such as fox fur and other precious furs, can only drag on for some time, and the leather is also ingenious, and special technological means are needed to perfectly maintain the original quality!" ”

Li Zhi was very satisfied with Jiang Cheng's arrangement, "It's settled!" There is a reason why I handed over the sewing of fur to the Sun family in the eastern mountains of Danwu Ba, not to question the leather craftsmanship of the Jiang family! ”

Jiang Cheng waved his hand happily, "You don't need to explain more, I understand the reason, the more you cherish the goods, the more you need the latest fashion design and advanced sewing techniques, and the lining also needs to be sewn with extremely high-quality silk, and it is more advantageous to hand it over to the Zhuan Sun family, and the Jiang family and their family are also close relatives, so they won't have any ideas!" ”

Only then did there be a smile on Li Zhi's face, "Deer antlers, deer bones, deer heads, kidneys, gall bladders, tendons, nightmares, etc., after the production is done, you and I will each take half of it, and give me a part of the venison after it is cured, I need to take it as a gift for some people!" ”

"Don't worry, these Lady Cry has already told the fourth child, especially the antlers she needs the most, the Jiang family doesn't need to keep a single one, and all of them will be handed over to her to refine!"

Stunned, Li Zhi didn't know that Pang Xi had long been interested in those antlers.

Without waiting for him to look back, Pang Qi had already walked over with Afeifa's little hand, "Brother Zhengwen, I want to refine a kind of cream, which can be used raw to dissipate heat, conduct blood, reduce swelling, and ward off evil spirits; Familiar with angelica, it is beneficial to the kidneys and deficiency, nourishing blood and replenishing blood, and is more specialized in the nourishment and beauty of our women's physique. We have all thought of the name, so let's call it a nourishing cream, and the front is crowned with the name of Zhengqing Wenqitang! ”

Li Zhi suddenly realized that the antlers are the old horns that have been ossified on the head of the stag, except for those who fall off naturally during the horn replacement period, most of them need to be killed by killing the deer, cutting off the skull, removing the residual meat, washing and drying to obtain.

Although there are many taboos in this thing, such as "those who do not have blood stasis should not take it, those who are yang and yin deficiency should not take it, and those with stomach fire and toothache should not take it, but with angelica, it is only useful for women's menstrual period."

And if it is applied externally, it is also another magic when it is only used for beauty and beauty, but it is a little extravagant, such precious medicinal materials, one gram will cost 100 copper coins, and one or two is a huge amount.

"It turns out that our family still has this ability? I can already refine medicines. Li Zhi smiled and praised Pang Qi.

Pang Qi tilted his chin proudly, "This thing is like an essential oil, it is really my innate knowledge, not just plants. ”

"In the future, the nourishing cream will be sold with essential oils, and you can also teach Afei Fa the specific production steps, she also has a first-level master realm, and a trace of true qi will only make your nourishing cream more effective!"

Afifa was overjoyed to hear this, and the other three ladies had their own strengths, so she was naturally eager to have her own specialties.

"In fact, the nourishing cream is what Afifa will be responsible for in the future, this idea was put forward by Sister Qingqi, where do I have this delicate idea!"

Afifa's eyes were full of gratitude, she didn't know about this yet, because of some religious taboos, she didn't live with the three ladies at night, how could she wait until after the permission from the Arab Empire.

She said: "Sister Qi'er, thank you for your good intentions, I have a place in Zhengqing Wenqitang, which is still of great significance. ”

Pang Ti understood what she meant, and only in this way could Afifa have a sense of recognition, which had nothing to do with personal strength and worth, but the status recognition between several ladies.

Seeing that they all belong to reasonable people, Li Zhi was most deeply touched, "That's good, Zhengqing Wenqitang will belong to the four of you sooner or later, I can get out and do something else, I can see you respect and love each other, which makes me very moved in my heart!" ”

"Then let's hurry up and help the two sisters!" Afeifa hurriedly put forward his own suggestions, and at this moment, Qingqi and Yuran had already rolled up their sleeves and joined the busy, not remembering their identity at all, but she saw it in her eyes.

In this way, they went their own way, so that the dinner was not very formal, and most of them swallowed a few bites to solve it, for fear that they would miss the next day's itinerary because of themselves.

Mingxin and Wu Dao Xiao rushed back to the Laojun Hall before dark, and only Mingtong was left here, because he was still responsible for the establishment of the Tianji Pavilion.

At midnight, the effect was really impressive, dragging the tired into sleep, and early the next morning, the Jiang family's compound ushered in the arrival of Xianfeng and Chengbi.

Xianfeng came to Li Zhi's expectation, Cheng Bi Lao Dao was unexpectedly happy, when he got up and arrived, this person had already had a deep conversation with Jiang County Ling, and as guessed before, the two of them really got acquainted with each other.

Seeing Li Zhi's arrival, Cheng Bi laughed: "It turns out that your grandfather is an old acquaintance of the old way, and the origin of this is really unpredictable!" ”

Lao Dao did not have the same down-and-out outfit as before at this time, it should be because he went to participate in Li Zhi's wedding, and he was forcibly replaced with his clothes, but it was just the most ordinary new Taoist robe, and the rough linen clothes were still there, but compared to the previous dignity, it was like a different person.

The top and bottom of his body had obviously been washed, and his beard had also been trimmed, so that Jiang Xian Ling saw him early in the morning. Almost unrecognizable for a while.

"This kind of origin is very meaningful, it's hard to say that it's not some kind of destined, I heard it yesterday and it caused a lot of shock!" Li Zhi's words are by no means polite.

"Boy, I think I will call you Mr. Li in the future, since I came out of the customs yesterday, I have not heard this kind of title, it is said that it has already become the unified name of Chang'an City, not specifically referring to your unique specialty, but out of recognition of your status, knowledge, and qualifications." Chengbi suddenly talked about it.

Li Zhi hurriedly tried to stop: "Forget about others, you can't call me that, I can't afford it." ”

Cheng Bi's laughter was still undisguised: "That's it, let me be a good person if I follow the will of the public, and we will have another name in private!" By the way, Mr. Li, it's rare for me to be refreshed, I've been very wronged by myself, I went to Chang'an City with you today, but you want good wine and good food to serve, and then find a few good drinkers to accompany me for a few days! ”

His words made the Qingqi girls who came after him couldn't help but chuckle, causing Lao Dao to smile after glancing at him: "These are Mr. Li's four wives?" And another vassal man? Haha, you kid is not shallow! ”

Although the tone in his mouth was a little frivolous, there was no distraction in his eyes, it was still clear, and he reached into his arms, making a gesture of taking gifts from elders to younger generations.

Although Li Zhi has not been in contact with him for a long time, he also knows that this person has a big and unruly nature, of course, he will not have a gift to prepare his thoughts, so he hurriedly got up and stopped at this time: "My ladies didn't kowtow to Uncle Shi, and you won't count your meeting gifts!" ”

Cheng Bi really withdrew his hand after a little gesture: "Then next time, this is your grandfather's house, not your own mansion, and you will make a big gift when you get there!" ”

Li Zhiqiang couldn't hold back the smile caused by Cheng Bi's pretense, and resolutely refused: "Qingqi, you four listen well, Uncle Cheng Bi is an elder and a senior, and he is a cultivator, can you equate the mundane etiquette of the world with his old man, can you promise any meeting gifts!" ”

Seeing that Li Zhi and his wife were so reasonable, Cheng Bi Lao Dao was not embarrassed at all, but chanted loudly: "Mr. Li and his wife are clear and reasonable, and they know that they take into account all the inconveniences of our Taoist body. ”