What is Gyeokguk (Structural Pattern)?
Gyeokguk categorizes a Saju chart into one of twelve structural patterns based on the dominant Ten God in the month stem. The pattern determines the chart's fundamental nature: Bigyeon-gyeok (Parallel), Siksin-gyeok (Eating God), Jeonggwan-gyeok (Direct Officer), etc. Special patterns include Geonrok-gyeok (Prosperity) and Yangin-gyeok (Blade). The Gyeokguk classification guides which elements are favorable or unfavorable for the chart owner.