The Later Heaven arrangement maps trigrams to seasonal cycles and worldly manifestation.
The Later Heaven Bagua takes the same eight trigrams and re-sequences them around the cycle of the seasons and directions — the world not as ideal symmetry but as it actually turns. Where Fu Xi's order is static and polar, King Wen's is dynamic and temporal, tracing how energy moves through the year and the compass.
Holding the two arrangements together unlocks a powerful distinction: the difference between a thing's ideal structure and its working behaviour. It models how one set of elements can be ordered for contemplation or for use — the eternal pattern versus the operating one.