"Did you bring the medical book?" After wiping her hands with a handkerchief, Yu Jiao poured a cup of tea for Wei Lichu.
Wei Lichu sat down on the chair, took out a cloth-wrapped medical book from his arms, and handed it to Yu Jiao carefully, "Third cousin, this is the secret technique of our sect that can only be passed on to disciples. You are the only one who has read this book besides our sect."
Yu Jiao paused while flipping through the book. "Since the secret technique is not passed on to others, I'd better not read it."
Wei Lichu smiled and said, "No, no, no, you are my cousin, not an outsider, it's okay for you to see it."
His master only gave him two books and then disappeared. In one of the alchemy books, he left a page, which was a feng shui book.
Yu Jiao took a sip of tea before flipping through the medical book, which was called Zhang's Thirteen Prescriptions. At first glance, it looked like a medical book, but it was actually a book on elixirs. There were thirteen elixir prescriptions in the book, including the composition of medicinal ingredients, elixir preparation methods, functions and indications, as well as contraindications for medication.
Elixir, elixir, the so-called golden elixir is actually a medicine and is inseparable from medicine.
Yu Jiao flipped through a few pages. The book used a lot of alchemy terms. Based on the material changes recorded before and after, Yu Jiao could roughly guess what these terms referred to. The most obvious one was that cinnabar referred to mercury sulfide.
What Wei Lichu said he didn't understand was that he followed the recipe written on it, but in the end he couldn't make the elixir.
Yu Jiao knew where the problem lay without even having to think about it.
In this era, there are no special instruments for detecting chemical substances, nor is there a way to accurately purify them from minerals. If the proportions of each chemical substance are not correct, the resulting chemical reactions will naturally be different.
Yu Jiao was unable to explain this to Wei Lichu. Even if she understood the chemistry knowledge, it was just theory in this era. If Wei Lichu wanted to make the elixir, he needed to conduct repeated experiments himself.
Yu Jiao closed the book and did not read any more. She returned the book to Wei Lichu and said, "Alchemy is essentially the process of extracting minerals from ores and reacting with each other in the furnace. You need to figure out the ratio and content of each mineral on your own, cousin. I can't help you."
Although Wei Lichu was a little disappointed after hearing this, Yu Jiao only flipped through a few pages, and Yu Liandan could say so much, and what he said was quite right. Wei Lichu couldn't help but say, "Third cousin, I think you are very talented in alchemy. Do you want to become my disciple?"
Yu Jiao just picked up the teacup and took a sip when she almost choked when she heard the sound. The solid substance condensed after a bunch of chemical substances reacted was the so-called golden elixir. She was really not interested in it, so she waved her hands and shook her head to reject Wei Lichu's kindness.
Wei Lichu didn't stay with Yu Jiao for long. After he left, Jianjia went into the room to clear the teacups. Seeing Yu Jiao half-leaning on the couch and looking a little listless again, she started thinking about how to cheer Yu Jiao up.
As she was leaving the room with the used teacup in her hand, she saw Wei San coming over with a letter. "Sister Jianjia, the concierge said that the post station has sent a letter to you from Qingzhou."
Jianjia was worrying about how to coax Yu Jiao into looking at her heart. When she heard that the letter was from Qingzhou, she hurriedly handed the tray in her hand to the maid and asked her to take it to the kitchen. She took the letter from Wei San and gave it to Yu Jiao.
Yu Jiao heard that the person came from Qingzhou and thought it must be Chen Yu. It had been a long time since she asked someone to send the incense pills back to Zhixun County.
The signature on the letter was indeed Chen Yu. Yu Jiao unfolded the letter and saw that Chen Yu said that they had tried several methods and finally found that when making paper, during the fire wall drying step, crushing the incense pills and placing them on the fire wall could not only maximize the evaporation of the fragrance, but also allow the paper to fully absorb the fragrance during the drying process, thus making scented paper.
The incense pills that Yu Jiao sent back last time have been used up. Chen Yu said that he would come to the capital soon after the New Year and bring some writing paper and some incense pills back to Zhixun County.
This was good news, and Yu Jiao felt better. Once Chen Yu delivered the paper to the capital, they could open a shop there.
To make scented paper incense, a large number of incense balls are needed. Yu Jiao is quite slow in making it by herself, so she thought of Wang Xueyan. She could ask Wang Xueyan to find a few reliable maids, and Yu Jiao would teach them how to make incense balls. After all, Wang Xueyan is going to open an incense ball shop, so she can ask Wang Xueyan to help make the incense balls and pay her for the wages and materials.
Yu Jiao shook the envelope and found a piece of paper inside. She picked it up and took a look, her expression changed slightly.
On this piece of paper, Chen Yu wrote that he went to visit Liu Sanniang and her son on behalf of Yu Jiao, and found that Liu Sanniang and her son no longer lived in the courtyard she bought in Huaihua Lane. He didn't know where they moved to, and the courtyard had been sold.
Chen Yu went to Mengjia Village. The small courtyard where Liu Sanniang lived in Mengjia Village was occupied by her uncle's family. Her uncle's family did not know the whereabouts of Liu Sanniang and her son, and they still thought that Liu Sanniang and Fei Ge'er were still living in the city.
Chen Yu asked around Huaihua Lane again, and the neighbors said that they didn't know when Liu Sanniang and her son moved out. One day, someone suddenly moved into the yard, and then they found out that the yard had been sold to someone else.
Yu Jiao held the letter in her hand, her brows furrowed. Liu Sanniang and Fei Ge'er had disappeared.
She thought that Fei Ge'er liked to stay with her the most and called her "sister" affectionately. She tightened her hand holding the letter, feeling a little worried.
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