According to ancient Chinese legends, a giant tortoise surfaced from the River Lo in central China around 4,000 years ago. The ancients found a pattern on a tortise shell (see extreme right picture). There were circular dots of numbers that were arranged in a three by three nine grid pattern on it's shell.

The pattern of numbers in any given direction - horizontal, vertical or diagonal add up to a total of 15 (see middle picture above). This is equal to the 15 days in each of the 24 cycles of the Chinese solar year.

The significance of the arrangements of the numbers on the giant tortise feature prominently in the following:

1. The Chinese system of time dimension also takes into account number 9. Time is divided into 9 ages, each lasting 20 years. Three 20 year ages make up one period. A full cycle takes 180 years. Each period is assigned a number, from one to nine.

There are two methods of accessing the Feng Shui of a site or the interior of a home using the compass: 1. The Eight Houses Theory and 2. The Flying School Theory.

Of the two methods, the Compass School's Eight Types of Houses Theory or (Eight Houses for short) is static and meant as a preliminary report to analyse which house is more suitable for an individual. In general, it is based on an investigation of a person's birth date and match this against the most suitable to the `least' suitable house.

Flying Star Theory is more accurate and takes into consideration the time factor. It is thus an extension of the Eight House Theory. For the first time in the world, Geomancy.net has developed a software to produce a comprehensive report combining the two theories. In additional, you also get to understand the Grand Duke's Theory.