"Do me a favor. Collect a large amount of moldy food for me within an hour. That's what the healer ordered."
"We have fulfilled our mission!" The two officers clasped their hands in a fist salute and were about to leave when Qin Susu said:
"I'll go with you."
...
Half a day later, when Qin Susu, Xie Yi, and Xie Er returned at dusk, each of them was carrying a large basket on their backs.
Qin Susu led Xie Yi and Xie Er directly to the guest room.
Qiu Yan was not in the guest room at the moment, but in the dining room.
She is working hard to prepare the culture medium.
For the culture medium, she envisioned mixing the juice from ground rice with the juice from boiled sweet potatoes.
When she returned to the guest room with some of the bottled mixture, she glanced up and saw Qin Susu and the other two, along with the three baskets beside them.
Upon seeing the basket, Qiu Yan quickened her pace.
Upon closer inspection, the basket contained a jumble of moldy food.
Both expected and unexpected, Qin Susu and the other two were brought to their aid.
"Xiaoyan, is this enough?"
"That's enough, that's more than enough." Qiu Yan never expected that Qin Susu would find so much mold in just one afternoon.
Qiu Yan nodded, Qin Susu had handled the matter well.
She thanked the two officers and inquired about Qin Susu.
"Where did you find all this moldy food?"
"Uh..." Qin Susu felt a little embarrassed when she talked about this.
Xie Yi laughed and said, "We snatched it from the mouth of a beggar."
“We paid for it,” Xie Er added. Of course, it was Qin Susu who paid for it.
Qiu Yan thanked her again and specially found a relatively spacious guest room to begin the mold culture.
With the help of Qin Susu and the two officials, she began to extract penicillin.
Xie Yi and Xie Er had no objections. The prefect had instructed them to cooperate with Miss Qiu at all times in treating the young master.
During this time, Qiu Yan took out some bottles and jars that she had prepared beforehand. These utensils had already been cleaned and disinfected by her.
She poured in the culture medium one by one.
She bought all these bottles and jars at the ceramics shop that afternoon.
Once the Penicillium mold had been collected, Qiu Yan placed it into culture medium for further cultivation.
Everything was ready, and it was already getting dark.
During her nighttime rest, Qiu Yan's mind was filled with her experiments.
The next morning, after visiting Young Master Xie and giving him some instructions, she began making charcoal again.
She made the activated charcoal from hardwood, and during this time, she once again borrowed the Xie family's kitchen.
As a result, she became quite familiar with the cooks in the Xie household.
The process of making charcoal involves placing hardwood into a porous metal container and dry-heating it over an open flame until the container stops smoking.
Wait for the charcoal to carbonize completely and for the hardwood to cool.
Then wash away the dust and impurities with cold water, drain the water, and grind the charcoal into powder.
Then air dry the toner.
The production of activated carbon is now complete.
In the kitchen, Qiu Yan stretched and checked the time; it was time to change Xie Gongzi's dressing again.
Today, she asked Young Master Xie to get up and walk around with the help of his servants, but told him to remember not to overexert himself.
She kept a close eye on Xie Gongzi's wound, fearing it might get infected.
After returning from Xie Gongzi's bedroom, Qiu Yan went to her experimental room and began making cotton wool, distilled water, acidic water, alkaline water, and so on.
Now, apart from Qin Susu, no one in the Xie family knows what Qiu Yan is busy with.
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