First, the appearance of thunder. In primitive society, slash-and-burn was the main way of production and life of our ancestors. That is, a tribe comes to a place, burns trees and weeds, sorts out a fertile soil, and then cultivates it. But with the development of time, this land will become more and more barren, and people have to go to the next place, so that not only can they not get rich food, but they also have to make great efforts. In order to make the tribe live in a stable place, reduce the labor burden, Emperor Yan improved farming techniques and invented thunder, which greatly improved the efficiency of agricultural production.
In the ancient book I ching? There is a cloud in the copula. The wood of Shennong is a tool, and the friction of wood is beneficial to teach the world. , "Li? Wen Jia has a cloud? Shennong began to teach people to farm? There are two sharp points in front of the thunder, which are connected by long wooden strips, inserted into the ground and dug out, which is the predecessor of the plow. It can be seen that in primitive society, our ancestors began to use tools to promote agricultural production, which can also explain the high technical level of ancient agricultural society in China.
In ancient myths and legends, Dayu managed water for thirteen years, and after unremitting struggle, he finally managed the flood successfully. The reason why it takes so long may have a lot to do with the lack of advanced tools. As the saying goes, if you want to do a good job, you must sharpen your tools first, and using advanced tools can often get twice the result with half the effort. However, under the conditions at that time, there were no more advanced tools at all. Perhaps because of this, Dayu will not enter the house for three times, always running around with thunder in places with frequent floods.