What do you mean four or six is impassable?

Unreasonable is synonymous with ignorance or irrationality.

The former "Si Liu" was the Four Books and Six Classics. Jing Yue in the Six Classics has been lost, so it is also called "Four Books and Five Classics" by later generations.

There are four seasons in a year. There are six solar terms in each season. "This is the first" 46 ",and it is also the way for us human beings to survive. If we don't understand or understand this way, then we don't know when to sow, when to harvest, and how to arrange our own food, clothing, housing and transportation.

Correspondingly, the second "46" is "Heaven and Earth". Because the word "heaven" is four paintings and the word "earth" is six paintings. After this 46, that is, through the "heaven and earth." Heaven and earth are the material basis of our existence. We should not only know and understand, but also respect and conform to the laws of heaven and earth, which is what people often say.