How to understand "Xia Shang" and "Yin Yang" in the Book of Changes?

The first one asked, the so-called yin and yang, because yin is empty, hidden inside, and yang is outside. Everything is like two things, so people who meet these characteristics will be divided into yin and yang.

The second question, in the Book of Changes, hexagrams are divided into two parts, the inner part and the outer part. Everything in the world has a beginning, while the six hexagrams start from the beginning, and the sixty-four hexagrams are the superposition of eight diagrams. With the beginning, there is a book and a further extension. This has formed six hexagrams, from bottom to top, inside and outside.

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The third question is whether heaven and earth are the same. How to understand this? The earth is cloudy, the potential is downward, the sky is yang, and the potential is upward. Among heaven and earth, there are three talents. Both heaven and earth. Where are people? Of course, in the meantime, Thai hexagrams, heaven and earth meet the trend of people, Thai! Negative divination, heaven and earth go their own way, people have no help, no.

The fourth problem is that one is yang and the other is yin. In fact, the yin and yang here are just their respective positions. Because yin and yang will always appear and complement each other. The beginning is the beginning, the beginning is the yang, and everything is open.