Dui 兌 is one broken line above two solid ones (☱): Lake, the element Metal, and in the Shuo Gua the youngest daughter. It is Gen’s inverse, and on the ring its block of hexagrams runs through the east-southeast quarter, from due east to the southeast.
Its two places on the compass
In the Later Heaven palaces Dui holds the west: the mountains 庚 Geng, 酉 You and 辛 Xin, from 247.5° to 292.5°. In the Early Heaven arrangement it stands in the southeast with the number 4, so every hexagram it tops carries a 卦氣 of 4 — He Tu Metal (四九為友). With Gen’s 6 it makes ten.
Its block of the ring, and the hexagrams it tops
Dui’s block runs from 90° to 135°, ending at the southeast: 臨, 損, 節, 中孚, 歸妹, 睽, 兌 itself (123.75°–129.375°) and 履, carrying the 卦運 4, 9, 8, 3, 7, 2, 1 and 6. The hexagrams Dui tops — 隨, 革, 兌, 夬, 大過, 困, 咸 and 萃 — each carry 卦氣 4.
Reading it for a house
A house facing between 90° and 135° has a facing hexagram with Dui below and a sitting hexagram from Gen’s block behind it. A house sitting in the west palace (facing east) reads its water from Dui in the Dragon Gate formula, which, like 坤’s, has two leftover palaces for 輔卦. The youngest daughter and the mouth are Dui’s Shuo Gua associations; they are classical symbolism, not inputs to the ring reading.
References
Canonical sources that inform this guide.
- Feng Shui/Xuan Kong Da Gua/Compass Location · WEBSITE
- Feng Shui/Xuan Kong Da Gua/Binary Representation of the 64 Hexagrams · WEBSITE
- Bagua (Eight Trigrams) · WIKIPEDIA
- I Ching · WIKIPEDIA