This poem expresses the meaning of sharing and spending time together in happiness and joy.
"Joy must be shared" means that when we experience joy and happiness, we should share it with others, feel and expand the effects of happiness with others. "Living together for a long time" means spending time with others and facing the joys and challenges of life together.
This verse calls on people to share in joy, build close connections with others, spend long hours together, and find joy and satisfaction in friendship and unity.