After Xiaohe heard this, he said:

"What you say makes sense. It is true that since ancient times, after countless improvements to farming tools in history, more grain and grain can be produced, and once more is grown, then the population will increase. This is the reason why the population of our Chinese people can continue to increase? In addition to the large-scale integration and land expansion within the Huaxia people, the most important thing is that the Huaxia people continue to take farming as the main way of life and production, so that through the improvement of farming tools and farming technology, they can continuously increase the output of grain, so as to continuously increase the strength of the military and the strength of the strength, so that they can continue to control the territory and population in a very large range. In fact, grain became the new restriction on population after fur, in addition to the restriction of animal skins. Under such circumstances, whoever can better enable many ordinary people to better open up wasteland, increase more arable land, and increase more population after experiencing war and chaos can create this prosperous era. In fact, this is how the Kaiyuan prosperous era came. After the Kaiyuan Dynasty, during the Song Dynasty, this trend reached its peak. The Song Dynasty is the only dynasty in the history of the Chinese people, in the long history of thousands of years, that does not like to use foreign troops. This dynasty has also experienced a very glorious history, and left a very brilliant cultural works, the Tang and Song dynasties, the Song Ci and even the Yuan Qu rich, in fact, were realized in the early years of the Song Dynasty. ”

Xiaohe was also very modest, and he could only hear him say:

At the beginning, the Yellow Emperor Yao Shun Xia Shang Zhou opened the first period of the brilliant civilization history of the Chinese people. After that, the Huaxia people reached the most high-profile and the most mature period during the Han Dynasty, and after that, the civilization that survived at this time in the Tang and Song dynasties reached the peak of the most perfect period. In this long river of history, often food determines everything, and the more abundant the grain is harvested, that time is often the precursor to the arrival of prosperity. When Hong Kong is in the wilderness, when the rain is not smooth, when there is a major drought or a big trouble, the advent of natural disasters is often the inevitable precursor to the arrival of any troubled times. This is of course because food is the most crucial example of restricting population, and the increase in food will inevitably lead to an increase in population under normal circumstances, and this is the law of history, and the increase in population is of course closely related to the increase in food. From the very beginning, the number of hides restricts the number of people the same, and the number of people restricted by food will inevitably be replaced by other things. In that primitive period, only what people produced or obtained through hunting could increase the number of more surviving offspring, and if there was a shortage of hides, even if people gave birth to the next generation, the newborn would die due to the lack of warmth from the hides. Therefore, for what the adults say, animal skins are the key factor that restricts the increase in the number of primitive human beings, just as the current food restricts the number of people, since animal skins can be replaced by linen and silk cloth, and can be replaced by cotton cloth, then food can also be replaced by other things. What's more, there are so many kinds of food, not only grains, including rice, wheat, corn, sorghum, soybeans, etc., the amount of this grain is very large, and human beings can guarantee not starvation as long as they eat enough of one of them. Human technology is constantly advancing, and human beings are also very powerful in improving agricultural tools, so the limit of food on the number of human beings is actually becoming more and more small. ”

Xiao He said this, as if he suddenly thought of something, I saw him look into the distance, the vast blue sky and look at the thousands of feather-like white crystal clear clouds, just so light floating on the blue sky, looking so leisurely.

Xiaohe seemed to have forgotten a little, when she said this, she was actually summarizing and thinking, and in this thinking he had new questions, so he only heard him ask:

"Since ancient times, food has replaced animal skins and become a new and important factor restricting human population. But at a certain age, the food produced by people is enough, but at this time, people are not only concerned about whether the food is full, but care about the so-called quality of life, so at this time, will the increase in the population be related to the food? ”

Runzhi was looking at a willow tree next to him at this moment, this willow tree had drooping branches, and these branches were gently blowing with the breeze, he listened to Xiaohe's question, so he replied:

"After satisfying the basic food, clothing, shelter and transportation, people will produce a variety of ideas, and the essence of these ideas is called culture. In fact, people are influenced by their thoughts, and their actions are controlled by their inner thoughts and ideas. The reason why people want to pursue the so-called good life is because of the influence of new ideas, that is, they need to pursue not only material needs such as food and clothing, but also other aspects that can meet their various needs. The kind of need of people is itself the rule made by man, and people agree with this rule, so that this new need arises. At this time, the production of grain often reaches a climax, that is, the production of grain is enough to meet the food needs of many people. At such a time, food production is sufficient, and at this time, the race that is most able to increase the population by means of food growth is often the race that can win the opportunity. Those races that have produced enough food, and weaved all sorts of so-called pressures to restrain their own reproduction and expansion, will be induced by other races to further shrink their numbers and eventually perish. But fortunately, even some races, because of the provocation and inducement of other races, constantly compress their own survival resources and give up their resources to other races. But in the process, in the process of intercourse with other races, whether it is war or peace, as long as the ties with other races are strengthened, then there will inevitably be a great deal of marriage between the two races."