The image of each hexagram in the Eight Trigrams not only refers to things in nature, but also refers to people through the image and nature of the hexagram, which is often said to go from heaven to human way.
Qian hexagram and Kun hexagram can be inferred from their nature: Qian - father, Kun - mother .
The other six hexagrams are judged by the hexagrams:

Zhen hexagram : One yang is in the first line, and the yang energy begins, representing the family eldest son

Kan hexagram : Yang Qi rises to the second line, which represents the second son of (second son) in the family

Gen Gua : Yang Qi rises to the third line, which represents the youngest son of (the youngest son) in the family
and so on. You can judge by the hexagram: Xun Gua - The eldest daughter; Li Gua - The second daughter; Dui Gua - The young girl
Substitute these into the Nine Palaces and Eight Trigrams, and you can intuitively feel which direction (house) everyone should live in at home:

In Feng Shui, the father should live in Qian Palace (sixth house), so that he can follow the laws of heaven and have equal fame. If the father lives in Kun Palace (second palace), the hexagram will become , Tiandi, Wuhe, , which "the upper hexagram is the sky, and the lower hexagram is the earth". The commonly said "No" in , "天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天天

So in the feng shui of Yangzhai, everyone should pay special attention to the location of the bedroom they live in.
Why is the place where the ancient prince lived was called East Palace ?

In the Nine Palaces and Eight Trigrams, Zhen Palace (third palace) is the place where the eldest son lives. As the crown prince of a country, the prince naturally needs to live in the palace where the eldest son is, conform to the way of heaven, and have equal fame. From the perspective of direction, Zhen Palace is in the east, so it is called East Palace .