Free Lancer Admin
Eight Mansions is one of the oldest and most widely used schools of feng shui, and it is also one of the most misunderstood. Most people know it only as the source of the Kua number, the personal number that tells you your lucky and unlucky directions. But Eight Mansions is much more than a lucky-direction calculator, and if you stop at your personal Kua number, you are only using a small corner of the system.
In this article, I will walk you through the full picture: what Eight Mansions actually is, how Kua numbers work for both people and houses, the eight house types, the eight types of qi, and how to apply all of it without tying yourself in knots.
What Eight Mansions Actually Is
Eight Mansions, called Ba Zhai (八宅) in Chinese, is a school of feng shui that divides space into eight sectors, each tied to one of the eight trigrams and to one of the eight compass directions. The word “mansions” refers to these eight sectors, and the practice is about placing the rooms of a home, and the people in it, in harmony with those sectors.
Unlike some schools that focus on the shape of the land, Eight Mansions is a compass school. It uses direction as its primary tool, which is why the Kua number, and the compass reading, matter so much.
The system has two layers. The first is the Kua number of the person, which tells you your personal favorable and unfavorable directions. The second, and more important, is the Kua number of the house, which tells you which sectors of the building are strong or weak. Most beginners learn only the first layer, which is why so many people apply the system incompletely.
The Kua Number, Explained
A Kua number is a number from one to nine that is calculated from a person’s birth year and gender category. Each number places you in one of two groups, the East group or the West group.
- The East group contains the numbers 1, 3, 4, and 9.
- The West group contains the numbers 2, 6, 7, and 8.
- The number 5 has no direction of its own, so it is converted to 2 for males and 8 for females, both of which fall in the West group.
Each number carries four auspicious directions and four inauspicious directions. Those directions are used to place beds, desks, and doors, and to decide which way a person should face for work, study, or rest.
The Kua number is useful, but it is personal fine-tuning. It is not the foundation of the practice, and it is not a personality test. It is a compass for where to face.
The House Also Has a Kua
This is the part most people miss, and it is the part that changes how you apply the whole system. A house has its own Kua number, calculated not from a birth year but from the direction the building faces.
The house’s Kua determines which sectors of the building are auspicious and inauspicious, and this affects everyone who lives there, no matter what their personal Kua number is. When the house itself is well placed, the people inside tend to be well placed too. When the house’s most important rooms are in difficult sectors, everyone feels it.
The house Kua is the foundation. The personal Kua is the fine-tuning. Apply them in that order.
Finding Your Home’s Facing Direction
To find the house Kua, you need the building’s facing direction, and this is where a lot of people make a mistake. The facing direction is not always the same as the direction the front door points.
For a house, the facing side is generally the side that faces the street, or the most open and active side. For an apartment, it is usually the side with the largest windows or the most outside activity. You will need a compass, and a phone compass app is usually good enough for a general reading.
Stand a few steps back from the front of the building, away from cars and metal, and note the compass degree of the direction the building faces. Take the reading twice and use the number that repeats.
The Eight House Types
Once you have the facing direction, the house falls into one of eight types, each named after one of the eight trigrams.
| House type | Facing direction |
|---|---|
| Li house | North |
| Kun house | Northeast |
| Dui house | East |
| Qian house | Southeast |
| Kan house | South |
| Gen house | Southwest |
| Zhen house | West |
| Xun house | Northwest |
Each house type has its own four auspicious and four inauspicious sectors, laid out around the floor plan. That map, not your personal number, is what tells you whether the bedroom, the kitchen, and the front door are in good locations.
The Eight Types of Qi
The eight sectors of a house are described by eight types of qi, four of them helpful and four of them difficult. These names show up constantly in Eight Mansions material, so it is worth knowing them.
The Four Auspicious Qi
- Sheng Qi (生气), Life Generating. The strongest of the four, tied to career, vitality, and reputation.
- Tian Yi, Heavenly Doctor. Tied to health and recovery.
- Yan Nian, Longevity. Tied to relationships, love, and connection.
- Fu Wei, Stability. Tied to personal development and a peaceful life.
The Four Inauspicious Qi
- Jue Ming, Life Ending. The most difficult of the four, tied to self-destruction and deep difficulty.
- Wu Gui, Five Ghosts. Tied to conflict, theft, and instability.
- Liu Sha, Six Killings. Tied to disputes and a negative mind.
- Huo Hai, Mishaps. The mildest of the four, tied to fatigue and small, nagging problems.
The practical rule is simple. The bedroom, front door, living room, and study should sit in the auspicious sectors. The kitchen, bathrooms, and storage should sit in the inauspicious sectors. That way the rooms where you rest and gather are supported, and the rooms where energy leaves are placed where their function is least harmful.
Applying Eight Mansions, in the Right Order
Here is the sequence I recommend, because it prevents the overwhelm that usually comes with this topic.
- Find the facing direction with a compass, and confirm it twice.
- Identify the house type from the table above.
- Map the eight sectors onto your floor plan, noting which are auspicious and which are not.
- Check the three most important rooms: the front door, the bedroom, and the kitchen. Those three matter more than anything else.
- Work with what you can change. You cannot always move the kitchen, but you can keep it clean, keep the lid down, and keep the door closed.
- Then apply the personal Kua. Only after the house-level picture is clear, fine-tune bed and desk directions for the individuals.
That order matters. Do it backward, and you will spend hours moving furniture to match a personal number while the house itself is quietly working against you.
A Common Situation: Two People, Different Kua Groups
This is where the house Kua saves people a lot of stress. If two people live together and belong to different Kua groups, it can seem like there is no way to make both of them happy, because a direction that is strong for one is weak for the other.
When you understand that the house Kua comes first, the problem mostly dissolves. If the bedroom is in a good sector of the house, both people benefit, no matter their personal numbers. The house is one unit, and a well-placed room supports everyone in it.
After that, you fine-tune. If the bed cannot be perfect for both, give one person the reading chair in their favorable direction and the other the desk. Stop treating the personal Kua as a competition, and start treating it as a set of small adjustments within a building that is already working or not working on its own terms.
Frequently Asked Questions
How do I calculate my Kua number?
The Kua number is calculated from your birth year and gender category. Different calculators disagree about a few details, especially the start of the feng shui year, so pick one consistent method and note which one you used.
Do I use my personal Kua or my house Kua first?
The house Kua comes first, because it affects everyone. After the house-level picture is clear, use the personal Kua to fine-tune furniture directions inside individual rooms.
What is the best direction for my bed?
The best bed position is first in an auspicious sector of the house, then oriented so your personal favorable direction supports you, with a solid headboard and a view of the door without being in line with it.
Is the number 5 in the East or West group?
The number 5 has no single direction, so it is converted to 2 for males and 8 for females, both of which fall in the West group.
Is Eight Mansions the only system that uses Kua numbers?
Eight Mansions is the system most associated with Kua numbers, but the idea that a building has its own energy, separate from the people in it, shows up across the compass school in different forms.
Conclusion
Eight Mansions is much more than a lucky-direction calculator. It is a complete system for reading a house through its eight sectors, and the key to using it well is the order: house Kua first, then personal Kua.
Find the facing direction, identify the house type, check the front door, bedroom, and kitchen, and then fine-tune with the personal Kua. That sequence will clear up more confusion than any single lucky direction ever will.
Have you tried applying the house Kua in your own place, and did it change how you saw the rooms? I would genuinely like to hear about it, so share your experience in the comments below.