Why can you read the Book of Changes, learn astronomy and geography and predict the future?

The core idea of the Book of Changes can be summarized in one sentence: those who change are changed. If you are poor, you will think about change, and if you change, you will get through, and the general rules will last for a long time.

It tells us with five lines of gossip that everything in the world has laws. Extreme things will be reversed, but extreme things will be reversed. This is the moral of our common yin-yang fish.

It also tells us that everything in the world is regularly connected. For example, people say that people are born to cope with the qi of heaven and earth, and the so-called heaven and earth are yin and yang. Huangdi Neijing is a profound system evolved from Yijing. There is a saying: it is not easy to learn, but I can't think of medicine. It means that learning the theory of traditional Chinese medicine must have the basis of learning the Book of Changes.

Sun Tzu's Art of War is also an important application of the Book of Changes in military strategic conception. For example, as mentioned in Sun Tzu's Art of War, "those who are good at raiding the enemy have endless heaven and earth and endless rivers." The Indiana Jones here refers to the unconventional combat troops corresponding to the "regular soldiers".

There are other fortune-telling geomantic omen, such as Eight Houses Mirror and Daoism. The Book of Changes is their core idea. Learning the Book of Changes is very important for us to learn the Book of Changes in modern times, and it is very important to learn its thought of "everything is natural". This means that we should live in harmony with nature and not take up too much natural resources.

This is of great significance to environmental protection and sustainable development.