Knowing etiquette, food and clothing are the foundation of everything.

Maslow's hierarchy of needs divides human needs into five levels: physiological needs, safety needs, social needs, respect needs, and self-actualization needs. If a person lacks food, security, love, and respect at the same time, he usually has the greatest need for food, while other needs are less important. At this time, people's consciousness is almost completely occupied by hunger, and all energy is used to obtain food. In this extreme case, the whole point of life is to eat, and nothing else matters. It is only when man is liberated from the control of physiological needs that higher, more socialized needs can arise.

If there is no food, people can't eat enough, and they are always racking their brains to fill their stomachs, then all imagination can only be the White Tower.

The food problem has always plagued the Tang Dynasty -- no, it has always been one of the most basic and biggest problems that plagued the ancient Chinese regime. Almost all civil uprisings were accompanied by famine. It is said that the people are not able to make a living, and the people have nothing to live on. What is it that the people depend on for their survival? That's food! The people of ancient China were the easiest people to satisfy, as long as they could give him food to eat, even if they couldn't eat enough, only half full, they would not think of rebelling. In the same way, it is only after solving the problem of eating that people have the mind to think about the future.

After all, the people live on food!

"What you see coincides with me. Let's take a look, where is the most appropriate place to choose as a pilot? Li Shimin said to everyone, and as he spoke, he gestured to Wang De. Wang De immediately went to the back and took out a scroll of maps and spread it out on the table in front of Li Shimin.

"Come, all of you will come and see." Li Shimin greeted everyone.

The people saluted, and then gathered around. This map is not the original map with only a few rough lines and markings, but a map that took the spies to redraw for two years under Xia Hongsheng's professorship. There are not only the various provinces, states and cities of the Tang Dynasty, but also the rivers and tributaries, mountains and lakes, grasslands, deserts, mountains and forest roads, which are naturally far worse than the maps of later generations, but compared to the previous maps of the Tang Dynasty, I don't know where the details are.

This map was drawn by itself, and after a few copies were printed, the original version was put away by Li Shimin himself, and I don't know where it was hidden. Even the one in front of me was printed. In addition, there are only departments of the imperial court, Guozijian, Hongwen Hall, and military schools, and there is not a single private one. Li Shimin did not allow it to be widely distributed, saying that if he owned this map, it was equivalent to running all over the Tang Dynasty without leaving home, and it was not enough for everyone in the world to know about it.

This map is not easy to come by, it is the largest organized activity since the establishment of the spy battalion, more than 200 spies were dispatched, using the map standards given by Xia Hongsheng to carry out surveying and mapping, traveled all over Datang, and it took two years before it was finally completed. In the process, countless difficulties have been overcome, and it is not enough for outsiders to do so.

In fact, the mapping of maps has never stopped. As long as the spies of the spy battalion go out of the range of Datang, and Datang has not carried out new surveying and mapping of this place before, after arriving, while carrying out the main task, the first important thing is to survey and map the local area. At present, in addition to the detailed maps of the Tang Dynasty, the Turks, the Western Regions, Liaodong, and Goguryeo also have detailed maps. And the spies and surveyors of the Tang Dynasty are still heading westward, and it is believed that it will not take many years for Persia, Dashi, and Byzantium to ...... Detailed maps will be sent back gradually.

"Zhancheng rice can not be immediately popularized and planted on a large scale, before the promotion, the pilot is particularly important, which is related to whether the rice seed can be implemented in my Datang, so the selection of the pilot is of great significance." Li Shimin also stood up, stared at the map and looked at it together: "What do you think about how to choose the pilot?" ”

"Your Majesty, now we only know that this Champa rice can ripen several times a year, and the yield per mu is much higher than that of today's rice seeds, so I don't know." Gao Shilian said to Li Shimin: "Before selecting the pilot, why don't you first teach the ministers and others to hear the specific situation of this Zhancheng rice?" ”

Li Shimin nodded and looked at Xia Hongsheng.

Xia Hongsheng had no choice but to play the role of a commentator again, explaining to everyone: "Champa rice is a kind of rice seed produced in Champa, which is produced in the country of Linyi Huanwang. Due to the humidity and heat in Linyi country all year round, this rice seed can be harvested three times a year in Linyi country. This kind of Champa rice has three characteristics, one is extremely drought tolerant, and the other is very adaptable; It is almost possible to "be born without choosing a place"; Third, the growth cycle is short, the more humid and hot the climate, the more times a year can be planted, like the land of Linyi, you can plant three seasons a year, and harvest three seasons that year. To the north, I am the southern part of the Tang Mountains, and it can also be three seasons a year. Further north, in the south of the Yangtze River, it may be two seasons a year. Guannei, Longyou and other roads, can be a season a year. Further north, and even in the eastern Liaodong region, it can also be a season a year. The yield of this rice seed is higher than the grain planted by the Tang Dynasty today, and it is conservatively estimated that if there are three seasons a year, one acre of land can produce seven or eight stones of grain, and two seasons, then one acre of land can produce five or six stones of grain, which is one season, and one acre of land can produce three or four stones. Moreover, because its requirements for land are not very high, it can be widely planted in my Datang. This yield was calculated based on the harvest of Linyi Kingdom. In fact, the country of Linyi is very backward, the people of Linyi are not educated, and the peasants of the country are very extensive in their cultivation, and there is no such thing as irrigation. Its cultivation is also, only to break the block is no longer deep, but to plant in the field, not to mention the seedlings. After planting, drought does not seek water, waterlogging does not dredge, there is no dung soil, and it is not tired, and it is far less careful than the cultivation intentions of the people of my Tang Dynasty, and its country is also as careful as my Tang Dynasty, and there is no Si Nongqing to supervise agriculture and guide the people to persuade agriculture and mulberry, but even so, the people of Linyi have never known what the word famine is. Therefore, if Zhancheng rice is in the hands of our Datang farmers, its yield per mu will only be higher than that in Linyi Kingdom. ”

"What?!" Listening to Xia Hongsheng's words, everyone was shocked: "Seven or eight stones per mu?!" This ......"

"Xiahou said that even if it is the same as today's rice seeds, it can only be harvested once a year, and it can have a yield of more than three or four stones per mu?!" Fang Xuanling asked in surprise, he could stuff an egg in his mouth.

Although Li Shimin told them about Zhancheng rice, what he said was not as detailed as Xia Hongsheng's, and now it sounds like this Zhancheng rice is more magical than what he heard from the emperor's mouth. (To be continued.) )