Knowledge › Eastern › Feng shui The He Tu and Luo Shu are ancient diagrams behind feng shui li qi, explaining the 4-9-2 magic square and the nine palaces of the Later Heaven ba gua.
Updated 25 Sept 2026 Traditional systems
Knowledge › Western › Astrology Discover the square aspect, a 90-degree angle between two planets, symbolizing conflict, challenge, and growth potential in astrology.
Updated 4 Jul 2026 Traditional systems
Knowledge › Western › Psychology Contagious magic rests on two laws: contact transfers properties, and similarity means shared essence. Rozin's 1986 experiments show they still shape us.
Updated 27 Sept 2026
Knowledge › Eastern › I Ching The nine palaces are the nine cells of the Luo Shu, a 3x3 square whose every line totals 15, and the grid used by Huyền Không and Kỳ Môn.
Updated 12 Oct 2026 Traditional systems
Knowledge › Eastern › Feng shui Build a Xuan Kong Flying Star chart: place the period star in the center, fly it along the Luo Shu, set the mountain and facing stars.
Updated 25 Sept 2026 Traditional systems
Knowledge › Eastern › I Ching Hà Đồ arranges birth and completion numbers by direction and element, while Lạc Thư is a 3x3 square where every row, column and diagonal sums to 15.
Updated 25 Sept 2026 Traditional systems
Knowledge › Vietnam › Folk belief Hoàn Kiếm Lake is not one of Thăng Long's four guardian temples, yet the returned sword legend sits at the old capital's spiritual center.
Updated 22 Sept 2026 Culture and belief
Knowledge › Vietnam › Vietnam's ethnic communities The Gia Rai speak a Malayo-Polynesian language and live mainly in Gia Lai, Kon Tum and Đắk Lắk, with a matrilineal society that worships Yang spirits.
Updated 19 Sept 2026 Culture and belief
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