昴 — Mǎo, the Hairy Head (Pleiades), is mansion 18 of 28 in the classical lunar-mansion cycle and one of the seven mansions of the White Tiger (白虎) quadrant. The Hairy Head (Pleiades) — the imperial seal. Favourable for formal judgments; cautious for marriages.
昴 Mǎo: classical reading
Mǎo — the Hairy Head, corresponding to the Pleiades cluster — classically presides over the imperial seal, formal judgments, and the carrying out of sentences. The mansion’s register is associated with the formal application of authority. Tong Shu doctrine reads Mǎo days as favourable for the issuing of formal judgments and the application of the imperial seal; cautious for marriages and inaugurations.
Configuration
Mansion:昴 (Mǎo) — the Hairy Head (Pleiades)
Position: 18 of 28
Four Symbol:白虎 White Tiger — West, Autumn, metal element
Animal totem:雞 (Rooster)
Element: sun
Presiding weekday: Sunday
Classical domain
Mǎo — the Hairy Head, corresponding to the Pleiades cluster — classically presides over the imperial seal, formal judgments, and the carrying out of sentences. The mansion’s register is associated with the formal application of authority. Tong Shu doctrine reads Mǎo days as favourable for the issuing of formal judgments and the application of the imperial seal; cautious for marriages and inaugurations. The mansion’s classical domain encompasses the pleiades, the imperial seal, executions and judgments.
Auspicious activity register (Tong Shu doctrine)
Classical Tong Shu commentary records Mǎo as broadly favourable for: formal judgments, signing of decrees, military matters, the application of authority.
Cautious activity register
Classical commentary records caution for: marriages, inaugurations, beginnings of long-cycle work, family matters. The cautious register is descriptive of the mansion’s classical reading, not prescriptive of a fixed prohibition — chart-specific reading determines whether the caution applies in a given case.
White Tiger context
The White Tiger governs the western quadrant — the autumn constellations, the metal element, and the register of judgment, harvest, and martial strength. Its 7 mansions describe the tiger’s anatomy and the regalia of authority. Mǎo is mansion 4 of the White Tiger’s seven, sitting within the broader metal-element register of the western quadrant.
Why the lunar mansion alone is not enough
The Mǎo (昴) mansion is one signal in a complete date-selection reading — not the whole answer. Classical Tong Shu (通書) doctrine layers four inputs into any date selection.
The lunar mansion governing the date. The 28 Mansions cycle through the calendar in a fixed seven-day weekday-coupled rhythm, so each candidate date carries one mansion as its presiding register. This is the input these reference pages describe.
The day’s stem-branch pillar. Every calendar date is also a 60-jiazi day pillar — one of the 60 stem-branch combinations that cycle every 60 days. The day pillar carries its own register, classical activity associations, and clash-or-combination relationships with the chart of whoever the date is for.
The year and month context. The current Tai Sui (太歲, the year god), the month branch, and the running shen sha for the year all modulate the date’s register. A mansion classically auspicious for marriage may be partially neutralised if the date falls in a month that clashes with the bride’s zodiac.
The chart-specific question. The date is being selected for a specific person and a specific event. The combination of mansion + day pillar + year/month context + the person’s own BaZi chart determines whether the date is genuinely auspicious for them. The same date can be excellent for one person and contradicted for another.
This page describes the first input — the Mǎo (昴) mansion's register. The reading is a useful starting reference. It is not a substitute for a chart-aware date selection that layers in the other three. Master Sean Chan’s auspicious date selection reads all four layers against your specific event question.
Practical priorities
Note Mǎo’s classical register — the mansion is classically associated with the pleiades, the imperial seal, executions and judgments and its activity register reflects this domain.
Read the mansion against the event you are planning. Classical Tong Shu doctrine records Mǎo as favourable for formal judgments, signing of decrees and cautious for marriages, inaugurations.
The mansion is one of four inputs. See the “Why the lunar mansion alone is not enough” section above for the full date-selection calculus that includes the day’s stem-branch pillar, year/month context, and your specific BaZi chart.
What does the 昴 (Mǎo) mansion mean in classical date selection?
Mǎo (昴), the Hairy Head (Pleiades), is mansion 18 of 28 in the classical lunar-mansion cycle — one of the seven mansions of the White Tiger (白虎) quadrant of the night sky. Classical Tong Shu doctrine reads Mǎo as the hairy head (pleiades) — the imperial seal. favourable for formal judgments; cautious for marriages.
What is the Mǎo mansion classically auspicious for?
Classical Tong Shu commentary records Mǎo as favourable for: formal judgments, signing of decrees, military matters, the application of authority. The classical register reflects the mansion’s underlying domain — the pleiades, the imperial seal, executions and judgments. Note that the lunar mansion is one of four inputs into any complete date-selection reading; chart-specific application requires layering in the day’s stem-branch pillar, the year and month context, and your own BaZi chart.
Should I avoid events on Mǎo mansion days?
Classical commentary records caution for marriages, inaugurations, beginnings of long-cycle work, family matters on Mǎo days, but the caution is descriptive rather than prescriptive. Whether the cautious register actually applies to your specific event depends on the day’s stem-branch pillar, the year/month context, and your own chart. A chart-aware date selection consultation reads all four layers together to determine whether a candidate date is genuinely contraindicated for you.
AUSPICIOUS DATE SELECTION
Get a chart-aware auspicious date for your specific event.
Master Sean Chan’s date selection service reads your specific event against your own BaZi chart, the year and month context, the lunar mansion governing each candidate date, and the shen sha that activate. Zero generic almanac advice — every date is chart-specific.
A BaZi consultation reads your full four-pillar chart and identifies the shen sha that activate around career, relationship, and event-specific questions — the chart-side context that makes any date selection actually meaningful.
For pre-computed auspicious dates by occasion type and month — weddings, ROM, business openings, contract signing, moving house, renovation — see the master index of auspicious dates by month.