The whole family traveled through time and became doctors, raised children and farmed in ancient tim

"Nothing, I just went for a stroll around the farm today and I'm in a good mood. What are you guys doing, brothers?" Xie Wanxing came over happily, looking at the two of them curiously.

"I have some questions about my homework and I would like to ask Brother Tang for help." Xie Lan smiled gently. He was usually diligent and studious, and never let go of difficult problems easily. Tang Ze was knowledgeable, and he had asked for advice many times during this period.

Tang Ze nodded slightly, his expression as calm as ever, "Thank you, brother, for your courtesy. It's just a mutual exchange, not a request for advice."

Xie Wanxing's eyes lit up, "Oh? What homework questions are you talking about? Let me hear them too," and she sat down on the stone bench next to her, looking like she was ready to listen attentively.

Xie Lan glanced at her and smiled helplessly. "It's about the interpretation of classics and historical texts. There are some obscure sentences in it that I can't figure out. Brother Tang has unique insights and has pointed out a lot for me."

Tang Ze took over the conversation, "Classics and historical texts are extensive and profound, and everyone has different perspectives on them. Brother Xie has a broad mindset, and discussing with him has been quite inspiring."

Xie Wanxing became interested. "Brother, which classic book are you talking about? I've also read a lot of books recently. Let's discuss it together."

Xie Lan thought for a moment and said, "It's from the Zuo Zhuan of the Spring and Autumn Annals. There's a passage in it about the struggle for supremacy among the princes. The words are obscure, and the deep meaning behind it is really hard to understand."

Xie Wanxing's eyes twitched as he said, "I remember this part! Is it the part about Duke Wen of Jin, Chong'er, dealing with the various vassal states after returning from exile? This part really reflects the complex political situation at the time, and also shows Chong'er's strategy and wisdom."

Tang Ze raised his eyebrows slightly, a hint of appreciation flashing in his eyes, "Junior sister, what you said is absolutely right."

"Brother, I see you've adapted quite well here these past few days." Xie Wanxing smiled widely, his large eyes curved into crescents. He extended his hand and asked, "How about I take your pulse?"

"Okay." Tang Ze's usually cold face softened and he naturally stretched out his wrist in front of her.

Xie Wanxing looked serious and gently placed his fingers on Tang Ze's wrist. Tang Ze only felt a slight touch, which felt like a feather gently brushing against him, without much resistance.

After a moment, Xie Wanxing released his hand and said, "It's okay, I'm fine. Brother, you're in great shape, but you still need to pay more attention to rest and don't overwork yourself."

"Okay, I still have to go back to my room to do my homework, so I won't disturb you two brothers." Xie Wanxing stood up, bowed to them both, and went back to his room.

Today, Xie Wanxing and Xie Songlin returned home after having dinner at the farm, so everyone else in the family had already eaten. Xie Wanxing did not stay and went straight back to his room.

She still had a lot of books to copy, and she had already compiled a catalog. It didn't matter if the handwriting was a little sloppy, as there were people in the bookstore who could help her polish the handwriting. As long as she could understand it without making any mistakes, it was fine.

After sitting down, she held the brush in her hand and was about to start writing, but her thoughts couldn't help but drift away. To be honest, she hadn't delivered new goods to Xingbao Pavilion for a long time.

Recently, Xie Wanxing has been concentrating on copying books, and his mind is full of content waiting to be reproduced, so he has fallen behind in the design of small gadgets. Thinking about it carefully, the last time he provided drawings to the workshop, he designed a small hot water bottle.

It is almost late autumn now. The chill is becoming more and more obvious in the rustling autumn wind. Winter is about to come. If this small hot water bottle can be put on the shelves in time, it will surely be loved by many people.

After all, compared with the metal hot water bottles commonly used in ancient times, small hot water bottles have many advantages.

Although metal hot water bottles can provide warmth, they are hard in texture and require extreme caution when used for fear of bumping into them. In addition, wealthy families generally use charcoal-fired metal hand warmers, which are complex to manufacture and expensive, making them unaffordable for ordinary people.

Small hot water bottles made of glue are different. The outer layer can be made of soft and comfortable fabric with a gentle touch.

Moreover, the warming effect is long-lasting and there is no need to frequently change hot water. More importantly, its production cost is relatively low and ordinary people can afford it.

"Hey, Axing, I'm copying a book! I just happened to show you a small thing." At this time, Cheng Hui also entered the space, holding a small and exquisite hot water bottle in her hand.

Xie Wanxing looked up when he heard the voice, and his eyes were instantly attracted by the hot water bottle in his mother's hand. His eyes were full of surprise: "What a coincidence, I was just thinking about this, and you made it?"

"Yes, the workshop just made two samples today. Take a look." Cheng Hui smiled and handed the two hot water bottles in her hand to Xie Wanxing.

The one handed over was a hot water bottle made of plastic without an outer shell. The transparent colloid allowed people to directly see the internal structure, and the liquid in the hot water bottle was clear.

The other is a hot water bottle wrapped in cloth. The outer layer is made of soft cotton cloth. The cloth not only makes the hot water bottle feel softer, but also prevents the discomfort that may be caused by direct contact with the colloid.

Xie Wanxing first picked up the plastic hot water bottle, squeezed it gently, felt its elasticity, and said, "Not bad, well made. Let's sell this one without the shell. Later we can also sell the hot water bottle covers and make money again."

"I think so too." Cheng Hui nodded and said, "We can make more patterns for these hot water bottle covers, plain colors, patterns, and more exquisite embroidery. I'm sure someone will be willing to buy them."

Xie Wanxing excitedly took over the conversation, "Yes, Mom! We can also launch covers with different themes according to different seasons. In winter, we can use thick, furry fabrics to keep people warm. In summer, although we don't need hot water bottles, we can sell ice packs. We can sell covers for outdoor decoration all year round. This way, our covers will have a market year-round."

"What are you thinking about? Ordinary people still use ice packs. They can't even use ice. Think about something practical." Cheng Hui gently tapped Xie Wanxing's forehead and said with a smile.

Xie Wanxing's eyes lit up again, and she said, "Mom, although we don't sell ice packs to ordinary people in the summer, the rich and powerful definitely have ice cellars to make ice. We can design exquisite ice pack covers specifically for them, using thin, breathable, and beautiful silk, embroidered with elegant summer-cooling patterns like lotus flowers and bamboo, and accessorize them with some exquisite pendants. This will not only meet their demand for beautiful ice packs, but also show their social status. Moreover, we can also make ice pack covers and hot water bottle covers into a series, and launch a set for all seasons. Maybe it will attract many wealthy people to buy them."

Cheng Hui's eyes flashed with surprise after hearing this. After thinking for a moment, she nodded and said, "Your idea is feasible. Rich people are always particular about things. As long as the things are exquisitely made and unique, they will definitely be willing to pay for them. What about the spring and autumn seasons? How do you plan to design the covers?"

Xie Wanxing drooped again upon hearing this and slumped down on the table: "Let's not think about this for now. I don't have the time right now. How can time be so scarce?"