The Life Palace, Ming Gong in the tradition's own Chinese term, is the first and most consulted of the twelve palaces that structure a Zi Wei Dou Shu chart, read for the native's core disposition, physical bearing and the general shape a life is expected to take, the single palace every other reading in the chart is ultimately weighed against. Its position is not read off a fixed calendar date the way a Western zodiac sign is, but calculated directly from the birth hour together with the lunar month and day, a computation that fixes which of the twelve palaces on the chart's wheel becomes Life for that particular native, so no two people share an identical Life Palace calculation unless their birth data itself coincides closely.
Whichever of the fourteen major stars falls into the Life Palace, whether Zi Wei's own authority, Tan Lang's appetite or any of the other twelve, is read as the single strongest influence on the native's fundamental character, and Ho Peng Yoke's account of the system treats this palace as functionally equivalent to the sun sign's role in Western astrology, the one placement a reader states first before moving on to the other eleven palaces' more specific domains. A chart with no major star at all falling in the Life Palace, termed an empty palace in the tradition, is read by a distinct convention, borrowing the reading of the opposite palace instead, a rule unique to this kind of vacancy.