Tai Yang, the Sun in the Chart

Tai Yang, the great yang, is the actual Sun given a place among the fourteen major stars, one of only two, alongside Tai Yin the Moon, that name a real celestial body directly rather than an office or a quality abstracted from it, a distinction the tradition's literature treats as significant since these two stars alone carry an intensity that is read as rising and falling across the day and across the birth chart's twelve houses depending on where in the cycle of day and night the native was born. Read for openness, generosity and standing in public life, Tai Yang's people are described in the tradition as naturally visible, drawn toward positions where their actions are seen and judged by others rather than toward Tian Ji's preferred behind the scenes influence.

The star also carries, in the reading practice's own convention, an association with the native's male relatives, most commonly the father, an attribution that follows the same logic used elsewhere in Chinese fate calculation of assigning family relationships to specific chart factors, though the exact relative named can shift depending on which lineage of practice a reader follows. Tai Yang's brightness is read as strongest when the star falls in a daytime birth chart and correspondingly dimmer in a chart cast for a birth after dark, a variation in strength built directly into the star's solar identity.