In the horoscope, the main star is the constellation corresponding to the heavenly stem at birth. The main star represents a person's personality and destiny and has a very important influence on the horoscope. The influence of the main star is mainly reflected in the five elements of the eight characters, the relationship between the ten gods and the jealousy of the gods. It can also affect a person's personality, career, marriage, wealth and so on. Tibetan trunk refers to other branches of the eight characters except the trunk, and its influence on the eight characters is also very important It can affect the five elements of the eight characters, the relationship between the ten gods, the likes and dislikes of gods and evil spirits, and so on. But compared with the main star, its influence is slightly weak.
In the eight-character analysis, both the main star and the Tibetan stem need to be considered, and we can't just look at one of them.