Sin
SieuThe Heart · Chinese Sieu 16
Position (J2000)
7° 48' Sagittarius ♐
Determinant Star
sigma Scorpii
Tradition
Chinese Sieu
Planetary Ruler
Moon
Astrological Influence
Sin, meaning 'the Heart,' is the sixteenth Chinese sieu, corresponding to sigma, alpha, and pi Scorpii (including Antares). Ruled by the Moon, this mansion represents the heart of the Azure Dragon, the vital center from which its life force radiates.
Antares, the great red star at the heart of the Scorpion, gives this mansion an intensity and significance that extends across all three lunar mansion traditions.
In the Chinese Sieu System
Sin belongs to the Azure Dragon palace, occupying the most vital position in the dragon's anatomy. The Moon's rulership connects the dragon's heart to the emotional, intuitive dimension of experience. In Chinese astronomy, the heart of the Dragon was considered especially significant for divination and the observation of celestial omens.
Lunar Influence
When the Moon transits Sin, it occupies the heart of the Azure Dragon, creating a moment of heightened emotional and vital energy. This is a period when feelings run deep and instinctive responses carry unusual weight. The intensity of the Antares region demands authenticity and emotional honesty.
Celestial Palace
The Azure Dragon (Qing Long) is the celestial guardian of the East and the season of Spring. Associated with the element Wood, the Azure Dragon represents growth, vitality, renewal, and the ascending energy of new life. It corresponds to the rising yang energy, when dormant forces awaken and begin their upward journey. The seven sieu of the Azure Dragon trace the magnificent serpentine creature from its horn (Kio) through its neck, heart, and tail, forming the most dynamic of the four celestial animals. In Chinese mythology, the dragon is a benevolent force associated with rain, rivers, and the fertile power of Spring.
Find which mansion your Moon occupies
Calculate your natal chart to see which lunar mansion your Moon falls in.