What do Sanyuan, Sixi and Five Blessingg mean respectively?

Sanyuan refers to the first place in provincial examination, general examination and palace examination, namely Xie Yuan, Hui Yuan and champion; The Ming dynasty also refers to the top three in the court examination, namely, the first place, the second place, and the flower exploration.

Sixi refers to Fulu Xi Shou.

Five Blessingg: Long life, wealth, good health, virtue and a good death.

It means auspicious.