Chinese Xiu (Mansions)
Fang (Room)
Also Known As Fang
Azure Dragon of the East
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Origin 433 BCE
The fourth mansion, the Room or Chamber, lies in Scorpius and represents the belly or dwelling of the dragon. Generally reckoned favourable, it is associated with the home, the stable and productive undertakings. The four palaces of seven lodges each divide the sky by direction and season: the Azure Dragon in the east with spring, the Black Tortoise in the north with winter, the White Tiger in the west with autumn, and the Vermilion Bird in the south with summer. The scheme is a division of the whole sky rather than of a band along the ecliptic.
Facts
Identity
Equatorial Extent (Du)5 du (about 4.9 degrees of equatorial arc) 2Tradition: Han-era Shi Shen tradition (Kaiyuan Zhanjing) Du: the arc-degree unit of the classical Chinese calendar, where a full circle equalled 365 and a quarter du (about 0.9856 modern degrees per du). This width is the Han-era figure standardized under the Taichu calendar and preserved in the Tang-dynasty Kaiyuan Zhanjing's Shi Shen star table; later dynasties recorded small revisions as precession shifted the determinative stars, so this is one epoch's figure, not a timeless constant. It measures the mansion's extent along the celestial equator (right ascension), the coordinate system Chinese astronomy actually used, not a position on the ecliptic (tropical zodiac); the atlas has no sourced mapping from this equatorial system onto a start point in ecliptic longitude, so this figure alone cannot be substituted into a start-end boundary range the way the equal Arabic-mansion spans are. Determinative StarPi Scorpii 2Tradition: Han-era Shi Shen tradition (Kaiyuan Zhanjing) Origins
Origin Period433 BCE 1Tradition: Chinese equatorial astronomy Origin PeriodThe full set of twenty-eight lunar mansions is attested together for the first time on the lacquer box from the tomb of Marquis Yi of Zeng, sealed in 433 BCE, the earliest surviving object to record the complete list of names. 1 Origin of the NameThe English "lunar mansion" is borrowed from the Indian nakshatras and the Arabic manazil and misdescribes the xiu. A xiu is a lodge marked by a determinative star and measured in right ascension along the celestial EQUATOR; it is not a division of the Moon's ecliptic path, and the three systems are not variants of one scheme. 2 Attributions
PalaceAzure Dragon of the East 1 Learn More
The Lunar Mansion Fang (Room)
Fang (Room) is the fourth of the twenty-eight xiu, the lunar mansions of traditional Chinese astronomy. Each xiu is a segment of the sky marked by a group of stars near the celestial equator, and together they divide the heavens into the belt through which the sun, moon and planets appear to move.
Palace, animal and place in the sky
This mansion belongs to the Azure Dragon of the East, the quadrant of the sky lying toward the east, one of the four symbolic creatures among which the twenty-eight are shared out seven to each. In the later scheme that pairs every mansion with a creature, Fang is assigned the Hare.
The twenty-eight mansions are among the oldest elements of Chinese sky-lore, attested well before the common era and used to track the nightly progress of the moon and to fix the calendar. The system is described here as that documented astronomical and calendrical tradition, from which its astrological uses later grew.
Fang, the Room of the Azure Dragon
Fang, the Room, is the fourth of the twenty-eight xiu and the fourth mansion of the eastern palace, the Azure Dragon. Its name means the room or chamber, sometimes read as the dragon's belly, identified with stars in Scorpius. In the later astrological tradition its animal totem is the Rabbit. As one of the twenty-eight lunar mansions it marks a portion of the sky along the Moon's monthly path. These are the conventions of the Chinese astronomical and calendrical tradition, in which the twenty-eight xiu divide the heavens into four palaces of seven mansions each, the Azure Dragon holding the first seven and governing the east and spring. The mansion the Moon occupies on a given night informs the almanac's reckoning of the day's character.
Fang's identification with the belly or chamber of the dragon figure, read alongside Jiao's horns, Kang's neck and Di's root or chest earlier in the sequence, shows the eastern palace's seven mansions were named as consecutive parts of a single continuous body rather than as unrelated points, a naming logic paralleled independently in the Arabic manazil's own runs of body-part names across the Lion and Scorpion stations, though the two traditions never shared these specific figures or this specific vocabulary.
Cross-Tradition Connections
Associated With
Named as the emblem animal of the lunar mansion Fang (Room) in the twenty-eight xiu list.
Contained In
One of the seven lunar lodges of this palace.
Originates in Language
Sources
1. Astrology and Cosmology in Early China: Conforming Earth to Heaven
David W. Pankenier, Cambridge University Press, 2013On the twenty-eight lodges and the Zeng Hou Yi lacquer chest
2. Science and Civilisation in China, Volume 3: Mathematics and the Sciences of the Heavens and the Earth
Joseph Needham, Cambridge University Press, 1959Vol. 3, the section on astronomy: the hsiu (lunar mansions), the equatorial system and the du measureQuote, Vol. 3, the section on astronomy: the hsiu (lunar mansions), the equatorial system and the du measure
The twenty-eight lodges are equatorial divisions bounded by determinative stars and so of unequal width, measured in du on a circle of 365.25 parts; their relation to the Indian and Arabic lunar mansion systems is unresolved.
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