Zhouyi-the book of change explanation (5)
Nine at the beginning: Hidden dragon. Do not act.
Xiang: Don't use dragons, Yang is under.
Here specifically talk about an ecology in the sky, it is a phenomenon that does not use dragons. Yang does is not about the sun, it talks about this dynamic, it talks about this dragon and it rains, which means drought thunder. why?
Drought thunder is very close to the surface, it is not at high altitude, because our positive ions go down, negative ions can not rise, there is no way to rise very high, why? No water vapor. There is no way to increase the negative electrons. If the weather changes, the cations will fall and the negative ions will not rise. The thundering discharge must be on the surface. In this case, it will not rain. It will be useless if it doesn't rain, so don't use it.
In fact, there is no, useless meaning. There is no use for this.
It is generally in arid areas, on the edge of the desert is also the case. In the most obvious place of thunder, on both sides of the Grand Canyon in the United States, there are often thunderings 50,000 to 60,000 times a day. It is very shallow and there is no spark, because in itself, it becomes an air shock and the air vibrates. It becomes noise only because it has no water so it doesn't rain. In this way, there is nothing to be used, but it is written by people later on, and it is not written in the times of ZhuoGon, it was a speculate written.
