Lộc Tồn is the Yin Earth wealth star heading the 12-star Lộc Tồn cycle, always flanked by Kình Dương and Đà La. Here is how it is placed by birth stem.
Northern Vietnam worship includes ancestor veneration, Thành hoàng, Mother Goddess and folk rites, reflecting uống nước nhớ nguồn and the wish for peace.
Greek and Indian astrology reached Tang China through Buddhism, yet Tử Vi Đẩu Số and Bát Tự run on the can chi calendar and ngu hanh, not Western star logic.
Where Tet couplets come from, where Vietnamese families pasted them (door, pillars, ancestor altar), and the basic rules of parallelism for writing one.
Early 20th-century custom books record the lễ mát nhà rite and bùa trấn trạch talisman: who performed them, where it was posted, and Phan Kế Bính's critique.
Yin yang, the Five Elements, the I Ching, Confucianism, Buddhism and Daoism: their origins, differences and how these systems blended into Vietnamese culture.
Đại Hàn is the last of the 24 solar terms, at solar longitude 300 degrees and lasting about 15 days. Here its calculation, customs, and meaning are explained.
Fertility worship in Vietnam, or tín ngưỡng phồn thực, hopes for flourishing life and harvests. It appears in Linga–Yoni symbols and the Trò Trám festival.
Tử Vi Đẩu Số has many branches, including Tam Hợp, Tứ Hóa, Trung Châu and Tân Biên. Each reads one chart differently through star sets and Tứ Hóa placement.
Hiệp Kỷ Biện Phương Thư records Nguyệt Kỵ and rejects Dương Công kỵ nhật. An analysis of the original Chinese text, separating old rules from folk beliefs.
Vietnamese taboo names of ancestors: why giỗ prayers whisper the dead's name, whether children could share a grandparent's name, and where the custom endures.
Tam Thức covers Thái Ất, Lục Nhâm and Kỳ Môn. This piece traces how it reached Vietnam and asks what is history and what is legend around Nguyễn Bỉnh Khiêm.
Chữ Nôm is the writing system Vietnamese people built from Chinese character material to record their own language, still seen on hoành phi and câu đối.
Thành Hoàng is the guardian deity believed to protect each Vietnamese village, worshipped at the communal đình. Its origins, deity types and royal decrees.
The same parents' years match on one site and clash on another because each site compares a different part of can chi: heavenly stem, branch or nạp âm.