What is Phong Thủy?
Feng Shui is a traditional body of knowledge about arranging living spaces in harmony with landscape and energy flow, based on yin-yang, the five elements, and the eight trigrams.
Also called: feng shui geography

What is Feng Shui?
Feng Shui (風水) is a traditional body of knowledge concerning how to choose and arrange living spaces, homes and graves so that they harmonize with the surrounding landscape and the flow of energy moving through it. Its theoretical foundations are yin and yang, the five elements, the eight trigrams, the heavenly stems and earthly branches, and the rules of landform and direction. This is reference knowledge that modern science has not verified.
Origins and other names
The name Feng Shui is formed from two Chinese characters: "phong" meaning wind, and "thuy" meaning water. This naming reflects the ancient view of two natural factors that strongly affect the living environment. In many documents, the term is also called "dia ly" or "dia ly phong thuy", emphasizing the study of terrain, dragon veins and mountain-facing directions. Articles on the site such as "What is Feng Shui? Foundational principles and how to apply it" present Feng Shui as a system with two main branches: yin dwellings (graves) and yang dwellings (homes and structures for the living).
Applications in daily life
In yang dwellings, Feng Shui is used to choose the house orientation and to arrange the main door, kitchen, bedroom and altar. Articles on the 24 mountain directions, such as the Giap mountain direction, the Can mountain direction and the Than mountain direction, show how to determine direction and assess good or bad fortune according to the five elements, the three harmonies and the eight dwellings. In yin dwellings, Feng Shui involves choosing the location, the orientation of the grave and the configuration of the land. In addition, many people apply Feng Shui to choosing feng shui stones, items suited to their destiny element, and colors according to the five elements.
Distinguishing it from easily confused terms
Feng Shui is often confused with Bát Tự (BaZi, Four Pillars) and Tử Vi (Vietnamese astrology). Bát Tự relies on the heavenly stems and earthly branches of the year, month, day and hour of birth to read a destiny; Tử Vi relies on a chart cast according to the hour of birth and on palaces such as Thiên Di. Feng Shui focuses on space, direction and the physical environment, and does not replace destiny reading. Feng Shui should also be distinguished from other forms of divination: it has its own theoretical system of landform and energy, even though it still falls within the framework of traditional knowledge that science has not verified.
Points to keep in mind when learning about it
Feng Shui is a cultural heritage and is reference material. Readers should approach it with an objective spirit and should not treat it as an absolute guide for every decision about housing, land or finances.
How do the schools understand it differently?
- The Form school (Loan Đầu): Focuses on observing actual terrain such as dragon veins, mountains and rivers, land configuration and water direction to assess good or bad fortune, making little use of the compass and complex calculation formulas.
- The Li Qi school: Relies on the compass, the eight trigrams, the heavenly stems and earthly branches, the five elements and formulas such as the eight dwellings and Flying Star to determine direction and the fortune of a period.
- The Bát Trạch school: Divides people into East Four Destinies and West Four Destinies, then chooses the house orientation, door orientation, kitchen and bed to suit the householder's destiny trigram.
- The Huyền Không Phi Tinh school: Combines direction with time, using flying star numbers to assess the rise and decline of each area in each period, and is often applied to homes and graves.
A comparison table of the four feng shui schools by approach and tools.
| School | Approach | Tools, basis |
|---|---|---|
| Form (Loan Đầu) | Observing actual terrain to assess good or bad fortune | dragon veins, mountains and rivers, land configuration, water direction |
| Li Qi | Determining direction and the fortune of a period | compass, eight trigrams, heavenly stems and earthly branches, five elements, eight dwellings, Flying Star |
| Bát Trạch | Choosing the house orientation, door orientation, kitchen and bed to suit the householder | East Four Destinies, West Four Destinies, destiny trigram |
| Huyền Không Phi Tinh | Assessing the rise and decline of each area in each period | direction, time, flying star numbers |
Related articles
- What is Feng Shui? Foundational principles and how to apply it
- What are feng shui stones? How to choose stones that suit your destiny element and age
- What is Đại Khê Thủy in the Na Yin of the Sixty Jiazi, and its Five Elements meaning
- The Thiên Di palace in Tử Vi Đẩu Số: meaning and how to interpret it
- The Giap mountain direction among the 24 feng shui mountain directions: meaning and how to interpret it
- People of the Metal destiny element: Five Elements characteristics and how they generate and overcome one another
- The Can mountain direction among the 24 feng shui mountain directions: Meaning and how to interpret it
- Thiên Tài among the Ten Gods of Bát Tự: meaning and application in destiny reading
- The Than mountain direction among the 24 feng shui mountain directions, meaning and how to interpret it
- Chính Ấn among the Ten Gods of Bát Tự: Meaning and application in destiny reading
- Trạch Khôn (West Four Dwellings) in Bát Trạch feng shui: Characteristics and directions that suit a destiny
- What is the Year Pillar in Bát Tự (Four Pillars)?
