What is the Book of Changes? Why can I travel all over the country?

I ching can be said to be you, the world and even the universe. The Book of Changes is just a picture on the surface, but it is a wordless gobbledygook. I ching does not depend on learning, but you can refer to the materials to make yourself understand. The Book of Changes appeared in people's lives 7000 years ago. It can be said that the Book of Changes is the belief of China people. The word "Book of Changes" is the combination of the sun and the moon, and everything including Yin and Yang belongs to the Book of Changes. Personal opinion, for reference only.