Each trigram represents a direction in the compass, we have eight directions (45 degree per direction) and we get eight types of houses by the sittings.
For the occupants too are also divided into two groups, the East Group and the West Group. And according to the Eight House Feng Shui School, the East Group people should live in the East Group houses. The West Group people should live in the West group houses.
Before we go on. You need to remember the Trigram number. For example, 1 is Kan. 3 is Zhen. 4 is Xun. 9 is Li. These are East Group. The other numbers, 2 Kun, 6 Qian, 7 Dui and 8 Gen are West Group.
Number 5 has no Trigram assigned to it.
The way to find out a person’s Trigram nubmer or Feng Shui Gua number is easy. Just remember this formula.
For gentleman, (100 – XX) / 9 take the remainder. For lady ( XX – 4) / 9 take the remainder.
XX is the year’s last 2 digits between 1901 and 2000 and is the year of the person was born. Don’t forget that XX needs to calculate according to the 24 Solar Terms.
Please note: If the remainder is 0, use 9 as the Feng Shui Gua number. If the remainder is 5, for male, use 2 Kun Trigram. For female use 8 Ken Trigram.
For A gentleman was born in 1967. His Feng Shui Gua number is calculated as the followings:
Birth year 1967, we only use the last 2 digits which is 67.
(100 – 67) / 9 = 3…Remainder is 6.
So any gentleman born in 1967, his Feng Shui Gua number is 6 Qian Trigram. He is a West Group Person.
For lady, to calculate the Feng Shui Gua number, again use 1967, the last 2 digits is 67.
(67 – 4)/9 = 7…remainder is 0. For 0, the number 9 is used.
So any lady born in 1967, her Feng Shui Gua number is 9 Li Trigram. She is a East Group person.
To work out the East or West Group of a house is complicated.
As far as I know, there are at least three different ways to find out a house which groups it belongs to. And it is very confusing for the beginners. The most common method is using the sitting of the house to identify which group the house is.
The East Group
North –> South
East –> West
Southeast –> Northwest
South –> North
The West Group
For East Group houses, the good areas inside the house are, East, South, North & Southeast.
For West Group houses, the good areas inside the house are, West, Northwest, Southwest & Northeast.
Of course, the areas inside the house has level of goodness.
Most Feng Shui consultants said that the Eight House School of Feng Shui is too simple. The Eight House School of Feng Shui does not include the time factor into it. Well, in my opioion, TIME can be included into any system of Feng Shui. It depends on how indepth knowledge you have learnt about a particular Feng Shui theory.