And Fang Ling has a habit, that is, every time his mother is sick, he will record and save the prescription and the symptoms of his mother's illness, not only that, sometimes he goes to the hospital to get medicine, and when he sees other people seeing a doctor, he also secretly records some things, so many years, it is already a thick book.

What are the symptoms of epidemic wind and cold in which year, and what prescription should be used, he has a clear record there.

If the prescription for this year's epidemic cold is made into a finished medicine and sold to Renxintang, it will not only relieve the crisis of Renxintang, but also increase a lot of income.

Fang Ling thought about it this and made up his mind, after he came to the pharmacy and got more than six hundred taels of silver tickets, he did not rush back, but stayed in the pharmacy for a while.

He watched Lang Zhong treat the people who came, silently remembered the symptoms of the patients, and only walked out after counting them in his heart.

At the same time, there is another problem in front of him, which is the place of medicine.

It is definitely not possible to make medicine in the palace, and if you get it outside the palace, you have to have a place to live, so he immediately came to the residential area of the imperial city.

The urban area of the Imperial City has a strict plan, which area is a commercial area, which area is a residential area, and which area is where officials live.

The residential area is actually just behind East Street, with long lanes and old streets, which make it far away from the hustle and bustle of commercial streets, and it seems extra clean, and there is also the sound of barking dogs from time to time.

Hearing the barking of his kind, the little white dog also became cheerful, and his tail wagged faster.

Fang Ling walked around the residential area for a while, and saw that many houses were posted with rental notes outside, and the rent was not expensive, only a dozen taels of silver in a year.

He found a relatively secluded courtyard, the landlord was a thin old man, according to him, this was originally a house for the second son, but the second son was conscripted to the border a few days ago, so it was empty.

Fang Ling signed a contract with him and paid three months' rent before returning to the palace.

Back in the palace, Fang Ling first took out the prescription he had collected, flipped to the wind and cold prescription that met the current symptoms, and after writing it down, he came to the Tai Hospital.

As he expected, sure enough, the cold snap also raged in the palace, and there were a lot of palace maids and guards who came to see the doctor.

Such a smooth process shows that the imperial doctors have made special prescriptions early in the morning, Fang Ling directly found Imperial Doctor Chen, asked for a side medicine, and also saw the prescription on his desk, just glanced at it, and found that it was almost the same as the prescription prescribed last year, just adding a taste of medicinal materials.

At night, the palace lamp was hanging high, and as soon as Fang Ling was waiting for his mother to sleep, there was a knock at the door.

Without thinking about it, Fang Ling knew that it was Jia's father-in-law's person, because it took three days for this embroidery to be handed over to him, and these guys could calculate the time very clearly, saying that if they handed over things in three days, it would definitely not be delayed until the fourth day.