First of all, you should understand heavenly stems and earthly branches's five elements.
The attribute of ten-day stem: A and B are wood, representing the East.
C and d are fire, representing the south.
E, own soil, representing the central government.
Geng and Xin Weijin represent the west.
Ren Hegui is water, representing the north.
The properties of the twelve earthly branches:
Pubic hair belongs to wood, yin is yang, and hair is yin.
Noon is fire, noon is yang fire, and noon is yin fire.
Belonging to gold, Shen is yang gold, especially yin gold.
It belongs to water, the child belongs to yang, and the sea belongs to yin.
Chen Xu's ugliness is not soil, Chen Xu is positive soil, and ugliness is not negative soil.
It is either dry or wet. Dry soil hides fire, wet soil hides water.
Underground branches and hidden trunk:
Hidden in Yin: A, C and E..
Hidden in the hair: B.
Chen Zhongcang: Hubei, B, Guangxi
Hidden: c, g, e
Hiding in the middle of the sky: Ding, Ji.
Not hidden: ego, d, b
Shen Zhongzang: Geng, Ren and Wu.
You hide in the middle: Xin
Hidden in the middle: Wu, Xin and Ding
Hiding in the sea: Ren and Jia
Zangzi: decyl
Self, shame and hatred.
A person's constellation consists of year, month, day and time. In other words, it consists of four heavenly stems and four earthly branches. Moreover, each heavenly stems and earthly branches has five corresponding attributes (gold, wood, water, fire and earth).
Therefore, to see what five lines are missing from a person's eight characters, it is necessary to analyze these eight words.
At one time, it was the problem of the trunk of the underground branch. You must first find out the hidden trunk of the eight-character earthly branch, and then the trunk corresponds to the attribute.
For example:
Eight characters: When Wuzi was born in Jiazi, the moon was ugly and the day was ugly.
Tiangan: Five Emotions, Mu Xin and Golden Rooster.
Gezhi: The subgenus Shuichou is a kind of soil ugliness that hides its own soil, Jin Xin and Guishui.
Therefore, the eight characters lack fire.