- Use the 4 noble presentation of the house with sand to enhance air, against a weapon, and avoid the shipping term and increase wealth.
- The old concept of the Four Spirit of four sacred animals symbolizing power and protection as Long, Phuong, Tiger, Tortoise. In Phong Thuy Linh Tu is the most basic concepts of how any one location. It is stripped Chu Tien and Hau Tortoise, Ta Thanh Long, Organic White Tiger. That front is a red, black turtle is back, the left and right is the Blue Dragon White Tiger represents the fourth side to protect the building. The expression is actually a very ancient astronomical observations when it is divided into four main clusters Stripping Chu, Tortoise, Dragon and Tiger in 4 East, West, South, North of election the sky.