As we all know, the central idea of the Book of Changes is that Yin and Yang are called Tao, and everything in the world cannot be separated from Yin and Yang, man and earth, earth and heaven, heaven and Tao, and Tao is nature. Although we know these theories, we still find it difficult to work in our lives.
To give a few examples: the so-called yin and yang means that everything we see has two sides. Where we can see, we can't see, what we show and what we hide. Therefore, whenever we deal with anything, we should consider both sides, good and bad. At the same time, the theory in the Book of Changes also says that yin has yang. Lao Tzu has a saying that is very apt, misfortune is a blessing, and blessing is a curse. So we can know that many things in life are good and bad, but they are only one aspect, so Confucius also told us to think twice. If you still find it difficult to understand, it is easy to understand Einstein's theory of relativity and absoluteness. Nothing is absolute.
Our ancestors summed up so many experiences and laws of nature for us to avoid detours and do things we regret.