It's hard for my elder sister. I rely on the mountains to farm and pay off my debts.

This thing doesn't require any effort. When Song Dahe saw Song Zhi coming to get the crochet hook, he immediately went back to the house and got the crochet hook for her.

"How much are these in total?" Song Zhi asked.

"Don't rush to calculate it now. Let's calculate it after these tables and chairs are finished."

Song Zhi thought it was a good idea, so she took out the hand-cranked spinning wheel drawing from her pocket and handed it over. "Uncle Dahe, with this drawing, can you tell me if I can make a spinning wheel?"

The drawings drawn by Song Zhi are actually smaller, more convenient and more optimized than the current hand-cranked spinning wheels.

The drawing was clear at a glance, and Song Dahe's hands were shaking with excitement when he received the drawing.

"This...this...you showed me this drawing directly?"

"What else? I asked Uncle Dahe to help me make it, so I'll give you the drawing!"

Song Zhi probably knew what the other party was excited about and what he wanted to say. It was nothing more than that some knowledge and skills were controlled by the big families.

The lower class people cannot enjoy such convenience, and if they want to enjoy it, they have to pay a huge price.

Song Dahe, however, assumed that the other party did not understand the meaning, and hurriedly explained: "Azhi girl, do you know that this drawing can be sold for a lot of money..."

Song Zhi interrupted him and said, "Uncle Dahe, I only know that these convenient tools are made to benefit the people, not to be hidden and become tools to restrain ourselves."

"If you ask me, these tools should be spread throughout the world so that everyone can use them. This will make spinning and weaving much easier, and carpenters will be able to take on more work and earn money to support their families."

Song Dahe laughed heartily, "Uncle Dahe is narrow-minded. A man who has lived for decades is not as clear-headed as a child like you..."

"Okay, uncle will definitely help you fix the hand-cranked spinning wheel as soon as possible!"

Song Zhi thanked the other party with a smile, then hurried back home with the crochet hook.

At this time, many women came into the main room and were trying to learn how to crochet.

Song Zhi called her younger sister out, handed her the crochet hook she had just received, and asked her to give one to each person in the afternoon.

After giving instructions to her younger sister, Song Zhi went to the studio in the backyard again.

She first cleaned out the herbs used to make tooth powder from the mortar, then put the herbs for repelling mosquitoes into it and began to grind them.

After grinding it into fine powder, Song Zhi put it into the small sachet with a drawstring that she had made earlier.

After finishing all this, it was already late. Song Zhi picked up three sachets and put her notes in her pocket and went straight to her master's house.

When Song Zhi arrived at Zheng's house, Doctor Zheng was already waiting at the teaching seat.

"Master." Song Zhi called out and hurried to her seat.

Doctor Zheng nodded, and after he sat down, he spoke, "It's been two or three days since I last explained the ten pulse conditions to you. Today, I'd like to test you to see if you've been slacking off."

"First, tell me the difference between a slippery pulse and a firm pulse."

Song Zhi didn't expect that the master didn't test her one by one, but compared her and let her distinguish the differences.

She pondered for a moment and said, "Both slippery pulse and full pulse are relatively full in pulse examination. If you don't distinguish them carefully, it's easy to confuse them."

"A slippery pulse that flows back and forth smoothly, feels smooth to the touch, like a bead rolling on a plate, generally indicates food stagnation, phlegm and fluid retention, and pregnancy in women."

"The solid pulse feels strong, whether you press it lightly or hard, you can feel its strength, which is generally a solid pulse."

Doctor Zheng stroked his sparse beard, nodded with satisfaction, and continued to examine: "What about the thin and weak pulses?"

Song Zhi first mentioned the similarities between the two. "Both appear thin and their pulses are relatively weak."

"A thin pulse with a slow beat is usually caused by Qi deficiency, liver and kidney Yin deficiency, spleen and stomach Qi deficiency, etc. It usually occurs in people with long-term illness and deficiency, as well as those with heavy water retention."

"A weak pulse is a fast pulse with a weak force, usually reflecting insufficient Qi and blood, and weak Yang Qi. It can cause fatigue, shortness of breath, laziness, pale complexion, and cold hands and feet."

"..."

Doctor Zheng compared the pulse conditions that were easily confused and asked Song Zhi to point out their similarities and differences.

Doctor Zheng was very pleased to see that his apprentice was able to answer all the questions, although there were occasional omissions, but none of them were wrong.

He coughed lightly twice and continued, "When learning, you must memorize it repeatedly and never slack off. That way, when you need to use it on a patient, you'll be able to handle it with ease and effortless."

"Yes, disciple will remember the master's teachings!" Song Zhi said respectfully.

Doctor Zheng nodded and continued, "Okay, now let's move on to the rest of the pulse signs in the Pulse Classic."

Doctor Zheng spent an hour explaining in detail to Song Zhi the various pulse conditions, as well as their corresponding manifestations and symptoms.

After introducing today's course to his apprentice, Doctor Zheng reminded him, "Learning medicine requires more than just memorizing pulse patterns. You also need to experience and practice more."

"Otherwise, even if you know which pulse corresponds to which symptoms, if you can't feel the pulse yourself, it will be useless."

"So, starting today, when you return home, you must begin learning how to take and feel a pulse. This way, you can truly digest and absorb the knowledge you've learned and continue to improve."

Song Zhi sat aside, listening attentively to her master's teachings and nodding in agreement from time to time.

After the study was finished, Song Zhi and Zheng Hui sorted out what they had learned today about the pulse and its appearance.

Before leaving, Song Zhi took out three small sachets from her bosom and handed them to Zheng Hui. "These are the mosquito repellent sachets I made. Hang them in the room to prevent mosquitoes. Summer nights are long and there are many mosquitoes. Hanging them will help you sleep better."

In this era, ordinary people could not afford to hang mosquito nets at home. In addition to burning mugwort leaves to smoke out mosquitoes, some families would place a large water tank in front of the bedroom and raise frogs in the tank to catch mosquitoes.

Zheng Hui took the unique little sachet with surprise, put it to her nose and smelled it. A fresh scent filled her nose, and the smell was very pleasant.

"Did you put any herbs in it? I think I smell mint, wormwood, and cloves."

Song Zhi smiled and nodded, then opened the drawstring from the outside, revealing the fine powder inside.

"I put some herbs with strong odors that mosquitoes dislike, such as mugwort and patchouli. I put this in my room or carry it with me. It not only has a fresh smell but also repels mosquitoes. Isn't it killing two birds with one stone?"

Zheng Hui looked at the small sachet in her hand with great interest and asked curiously, "Can this really repel mosquitoes?"

Song Zhi shrugged. "I just made this today, so I'm not entirely sure. Anyway, the smell is pretty good, and they're just common medicines, so there's no harm in them. We'll know after we give it a try!"

Zheng Hui agreed and nodded, "Sister, you're right. Grandma has been unable to sleep these past few days because of mosquitoes. I'll hang this little sachet on her bedside."

After hearing this, Song Zhi said, "I'm making a herbal ointment that can relieve itching. I'll bring some over to you when I'm done."

Zheng Hui nodded with a smile, and after personally seeing the person off to the door, she happily went to look for grandma with the small sachet in her hand.