"Are there any other books?" Li Chengqian asked.

Although the prince is young, he is very good at learning. Who asked him, Aye, to arrange so many teachers for him? Of course, he also knew very well that the books in this store had many useful things for Datang, so of course he had to buy more and go back to study.

"Of course there is." Chen Xiayue said with a smile, "What kind of books do you need? I have all kinds of books on clothing, food, housing and transportation. Do you want to read them all?"

"Okay." Li Chengqian nodded.

Chen Xiayue asked Chen Shan to pour juice for Empress Zhangsun and let her drink it first, and then she took Li Chengqian to read.

Of course, there are things related to cotton, silkworm raising, wool spinning, etc., the production materials and production methods of various fabrics, as well as the styles of clothes, dyeing techniques and so on.

Since there are tools for weaving, of course, there are textile machines, looms and the like, and there are also machines for playing cotton and cotton ginning in books.

Books include cotton planting, maintenance, cotton picking, weaving, etc., as well as cottonseeds that can be used for oil extraction.

Then there are sheep breeding books on the wool side, how to cut wool, how to wash it, and then spin it into thread and so on.

Then there is the top of the food, there are many recipes, and then there are books on the introduction of various ingredients, the production of seasonings, spices, condiments and other things.

In terms of housing, of course, things like cement, brick-burning and tile-burning techniques, pottery pots, ceramic tiles, kang, ceramic sinks, toilets, etc., as well as furniture and other things are readily available, and there are many books.

In terms of transportation, cement is also crucial. Cement paving, asphalt roads, etc., as well as bridge construction, shipbuilding, and even steam engines, trains, and so on.

With such a large pile of books, Li Chengqian didn't know which ones to buy, and he always felt that the things he brought over couldn't sell so many books.

"How about little prince? Do you want to buy it?" Chen Xiayue said with a smile.

These books are all organized by her and placed in the store. She is not very clear about the situation in Datang, but she has read a lot of Tang Chuan novels and checked the materials. Of course, she also knows a little bit, and preparing these books is also I hope that people in Datang can learn something from it, and then make the entire Datang country peaceful and peaceful.

Chen Xiayue was an ethnic minority in her previous life, but she is not an ethnic minority in this life, but her husband Zhang Chengchuan and her daughter Zhang Nuan are also ethnic minorities, but even if they are ethnic minorities, aren't they Chinese?

She also thinks that the country in the history of China is Chinese, and the Tang Dynasty is also a proud history of China. Of course, she hopes that the Tang Dynasty will be good.

The most important thing is that she likes the era of the early Tang Dynasty. In the past, she liked to read Tang Chuanwen in this era. Generally, she did not like to read the texts from the Tianbao period or the Wuzhou period.

Since she likes this dynasty and this period, she can still contribute to the Tang Dynasty. Who let her hold such a powerful golden finger?

"Okay." Li Chengqian nodded. He found these books to be very useful. He couldn't bear to lose any of them, so he might as well buy them all.

Li Chengqian and Empress Changsun one bought a lot of books and the other bought a lot of medicines. The things the mother and son bought were probably all antique calligraphy and paintings and famous paintings and calligraphy.

But the system did not accept those antique calligraphy and paintings after scanning, that is to say, those predecessors' calligraphy and paintings before the Tang Dynasty and antiques were not accepted.

The system also has rules. In addition to money and the paintings and calligraphy of celebrities in the Tang Dynasty, the things that can be exchanged on the Tang plane are only some rare things that can be exchanged, such as ceramics, jades, etc. made in the Tang Dynasty. , it must be the date of production in the Tang Dynasty, which means that the maker still exists in the world.

After all, if these things are exchanged for things, the Datang plane can still continue to produce. And those other manufacturers who have passed away will be out of print. If they are exchanged for Chen Xiayue, it means that their plane is gone, so what if there are no such antiques in the world after hundreds or thousands of years? ?

As for the system of gold, silver and jewelry, it is regarded as currency and can still be circulated. The gold and silver of the Great Tang plane can be exchanged for things, then the gold and silver of other planes can also be exchanged for the Great Tang side, there will be no shortage.

Li Chengqian's mother and son brought a lot of things. Those antiques and paintings of predecessors can't be replaced, but the calligraphy and paintings of celebrities of their era can still be used.

For example, the high-ranking officials of the Tang Dynasty, the calligraphy and paintings of the princes and generals, as well as the calligraphy and paintings of the emperor Li Shimin, the empress Zhangsun, and the emperor Li Yuan can be exchanged. They are all famous people.

After Empress Changsun and Li Chengqian exchanged these calligraphy and paintings, Chen Xiayue recommended table tennis to Li Chengqian. This sport that can be played indoors can be played even on rainy days.

After Chen Xiayue watched the mother and son leave, she also left the store in a hurry. After letting Chen Shan take a good look at the store, she went back to see her daughter.

After Li Chengqian and Empress Changsun came out, they looked at the various books stacked together in the room, as well as several bottles of medicine bought by Empress Changsun, as well as baskets of fruit, and hurriedly called for someone to come and remove them.

"Auntie, you've worked hard too. Should you go back to rest early? Do you want to eat some fruit before resting or have some meals?" Li Chengqian asked with concern.

Although he doesn't often see the hardships of his mother's pregnancy, he knows a little about it, especially because of the store's recent reasons, he can often see his mother and see how hard her pregnancy is.

A-Niang has already given birth to three of their brothers and sisters, and the one in her stomach is four. Li Chengqian was a little worried about his grandmother's body. Next time he went to that store, he wondered if he could ask if there was anything to support his grandmother's body.

"Auntie is very good. When she was in the store, she always sat and was not tired." Empress Changsun touched her son's head and said, "Gao Ming has become more and more sensible, and Auntie is very pleased. But Gao Ming is very happy. , you are still a child, and occasionally you can relax a little and be a little more childish."

Empress Changsun knew that her eldest son was the crown prince, and the burden on his shoulders was very heavy. But he is also her son. As a mother, she also loves her son. She hopes that he can relax a little and not push himself too hard.

Li Chengqian was silent for a while when he heard the words, and then he raised his head and nodded, "I know, my son, don't worry."

Empress Zhangsun sighed slightly, patted her son on the shoulder and said nothing. After all, her son is also old, and it is no longer necessary to listen to her mother in everything when he is two or three years old. It is impossible for her to let her son live as she imagined.

Empress Zhangsun did not continue the topic just now, and said to Li Chengqian with a smile, "Gao Ming, go and call you Aye, let's have dinner together today, and call your younger siblings by the way."

Of course, the younger brothers and sisters Empress Changsun said this time were Li Lizhi and Li Tai. The other princes and princesses had their own mothers, so she didn't call them over.

"Okay." Li Chengqian nodded to indicate that he knew, and then followed his mother to send her back to the Lizheng Palace.