Hakka (Ba gua) including Nijuhasshuku (Twenty-eight mansions), Jikkan (Ten celestial stems), Junishi (Twelve earthly signs) and yosumi (Four cardinal points) are described on the earth board (the seat) and Junigessho etc. are described on the heaven board (the canopy).
地盤には、二十八宿、十干、十二支、四隅の八卦が記載され、天盤には十二月将等が記載されている。