Constant, and not easily movedDuration
Constancy is not repetition; it is direction.
Heng: thunder above, wind below — ceaselessly in motion; yet motion long enough acquires a stable axis. Heng does not freeze things; it holds one direction unmoved inside a moving world. Anyone can sprint a stretch; those who finish a lifetime of running are the ones with their own bearing. Heng is also the reminder: marriage, partnership, faith — whatever was promised must keep its first direction through change.
A line, blunt: when duration in virtue fails, shame may follow. The shame is not given by others; it is collected by yourself. Heng's difficulty is not the start but the third month — novelty gone, results nowhere: that stretch is the true body of constancy.
Practice Pick one role, relationship, or direction you promised and lately waver on. Write three sentences: why you chose it then, and whether that still holds.