What does eight-character coincidence mean?

The coincidence of the eight characters is a coincidence.

In terms of eight-character longevity measurement, the tripartite bureau is actually a kind of cohesion, which is a kind of cohesion for Zhongshen (meridian) and has the strongest synergy; Liuhe is like friendship, partnership, friendship and solidarity, which are mutually beneficial, and the synergy is not as good as the three meetings; Concealing is a secret sexual intercourse, which is shady, only furtive, and a personal relationship.