What does spades mean in playing cards?

The French believe that four colors represent four social classes: spades symbolize soldiers, plum blossoms symbolize agriculture, squares represent bricks used by craftsmen, and hearts symbolize priests.

Italians believe that spades originate from olive leaves and symbolize peace; Heart represents people's heart, symbolizes wisdom and is also a sign of love; Plum blossoms come from clover, which means happiness; Diamonds mean expensive diamonds.

Astrologers believe that the four colors of heart, diamond, plum blossom and spades symbolize spring, summer, autumn and winter respectively.

Also, the four colors represent the four major industries in society at that time, among which spades represent spears and symbolize soldiers; Plum blossoms represent clover flowers and symbolize agriculture; Square represents bricks used by craftsmen; The heart represents the heart and symbolizes the priest. On the other hand, these four colors come from the patterns of ancient European divination tools, in which spades represent olive leaves and symbolize peace; Plum blossom is a four-leaf clover, which means good luck; The square is a diamond, symbolizing wealth; The heart shape symbolizes wisdom and love.