How do you cast a Mei Hua hexagram?
Two classical methods. By moment: add the lunar year branch, lunar month and lunar day, divide by eight for the upper trigram; add the double-hour index and divide by eight for the lower; divide the total by six for the moving line. By number: say two numbers — the first divided by eight gives the upper trigram, the second the lower, and their sum divided by six gives the moving line. An exact division takes the eighth and the sixth. This page casts both ways and shows every step.