The Ba Gua is a Feng Shui tool. It represents, with the symbolic form of the octogone, the knowledge of Yin and Yang which was briefly explained in the preceding pages of this site.

Every trigram governs a direction of the Compass. Every direction is linked to a trigram : season, moment of the day, element, color as well as a number : the Gua which is determined by the year of birth according to a simple method of calculation explained as follows :

(For the children born from 2000 onward, boys replace the number 10 by 9 and the girl the 5 by 6. If you are born between January 1st and February 3rd, you are from the previous year)

You just add the last two digits of your year of birth. If the number obtained is composed of two digits, add them again. Then subtract the result from 10.

• If you are born in 1974
• 7+4 = 11
• 1+1 = 2
• 10-2 = 8

Your Gua number is 8

You just add the last two digits of your year of birth. If the number obtained is composed of two digits, add them again. Then add the result to 5.


• If you are born in 1974
• 7+4 = 11
• 1+1 = 2
• 5+2 = 7

Your Gua number is 7

The Gua 5 is not used. The women replace it by the Gua 8 and the men by the Gua 2

If your Gua number is 1,3,4 ou 9, you belong to the East Houses.
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If your Gua number is 2,6,7 ou 8 you belong to the West Houses.
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Your Gua will help to determine your type of energy and tell you the directions which are favorable to you. There are two groups of people : those from the East Houses and those from the West Houses. People from the same group are more compatible. It's easier for them to choose a home or the position of their bed, because they have the same good or bad directions.