What do the four different patterns in playing cards represent?

Playing cards are divided into four colors: spades, hearts, clubs and diamonds. People all over the world give different cultural explanations to the four colors with their own national cultures. The French understand the four colors as spear, red heart, clove leaf and square; Germans understand the four colors as leaves, hearts, acorns and bells; Italians understand the four colors as sword, wine glass, scepter and coin (the same as the four colors of Tarot small secret instrument); The Swiss understand the four colors as acorns, shields, flowers and bells; The British understand the four colors as shovel, red heart, clover and diamond.

Why use these four modes? There has been a lot of debate. There are two kinds of centralized views: one is that these four colors represent the four major industries of 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; The heart shape symbolizes wisdom and love. Plum blossom is a four-leaf clover, which means good luck; This square is in the shape of a diamond, symbolizing wealth.