What does happy fortune telling mean? _ What does happiness mean?

What does "Geng Xin Guirenjia B" in the eight characters stand for?

Geng is Xin, Yin, Gui, Yin water, A, Yang wood and B, Yin wood.

Taking the Japanese Lord (himself) as the center, the punishment kills people, and the six relatives represent brothers, sisters and parents; Wife and children; Work representatives lead superiors, subordinates, money, career, marriage, Shou Yuan.