“What is the 24 Mountains?”
In Western convention a sitting or facing direction is measure by points e.g. 35 degrees. In Chinese convention a sitting or facing direction is measured by sectors. In the 24 Mountains method, each sector is 15 degrees. For example houses that face between 337.5 and 352.5 are said to be facing “Ren” or N1.
| Span | Twenty Four Mountains | Modern Term |
| 337.5 to 352.5 | Ren | N1 |
| 352.5 to 7.5 | Zi | N2 |
| 7.5 to 22.5 | Gui | N3 |
| 22.5 to 37.5 | Chou | NE1 |
| 37.5 to 52.5 | Gen | NE2 |
| 52.5 to 67.5 | Yin | NE3 |
| 67.5 to 82.5 | Jia | E1 |
| 82.5 to 97.5 | Mao | E2 |
| 97.5 to 112.5 | Yi | E3 |
| 112.5 to 127.5 | Chen | SE1 |
| 127.5 to 142.5 | Xun | SE2 |
| 142.5 to 157.5 | Si | SE3 |
| 157.5 to 172.5 | Bing | S1 |
| 172.5 to 187.5 | Wu | S2 |
| 187.5 to 202.5 | Ding | S3 |
| 202.5 to 217.5 | Wei | SW1 |
| 217.5 to 232.5 | Kun | SW2 |
| 232.5 to 247.5 | Shen | SW3 |
| 247.5 to 262.5 | Geng | W1 |
| 262.5 to 277.5 | You | W2 |
| 277.5 to 292.5 | Xin | W3 |
| 292.5 to 307.5 | Xu | NW1 |
| 307.5 to 322.5 | Qian | NW2 |
| 322.5 to 337.5 | Hai | NW3 |
