It means that the shadow of happiness extends to future generations. Benyuan Gaoming's "Pipa Story Five Mothers Bury in-laws": "This grave is only dry, and Sun Yinzi's happiness is unpredictable; Even if you get the shadow of three dollars, you can't help the old. "
Word decomposition
Interpretation of happiness → Everything goes well, which is luck, as opposed to "disaster": happiness. Enjoy the fun. Benefit. Blessing. Welfare. Gospel. Good luck. Dominate (originally refers to the ruler who specializes in rewards and punishments and monopolizes power. After describing abuse of power, bullying). The posture of ancient women saluting: salute. Wine and meat sacrificed to god: food. Fu Jiuzi's explanation refers to children in ancient times, and now it refers to sons: children. Children and grandchildren. Kid. Children (younger generation, young people). Fruits and seeds of plants: rapeseed. Melon seeds Zishi. Animal eggs: fish eggs. Silkworm eggs are young and small: chickens. Children and livestock. Purple into small hard granular things: *