There are fifty-four cards in a playing card. After painstaking research, it is found that the design of playing cards has a subtle relationship with astronomical calendar.

I have read similar introduction articles before, and found one for the landlord's reference:

It is said that playing cards originated in Europe, and the number of cards is different from now. Today, the French invented 54 cards. Poker contains a lot of truth and astronomical knowledge.

1. Today's playing cards are designed with 52 real cards, because there are 52 weeks in a year.

2. Playing cards are designed in four colors: diamonds, hearts, spades and clubs, because a year can be divided into four seasons: spring, summer, autumn and winter;

3. There are thirteen cards in each suit, because each season includes thirteen weeks;

4. If you calculate the score of each set (J is eleven o'clock, Q is twelve o'clock, and K is thirteen o'clock), it is exactly ninety-one points, because each season averages ninety-one days;

5. Add up the points of the four colors, and take half a point for each king. The total number of points is 365, which is the same as the total number of days in a year (in leap years, the king is taken as a point);

6. Twelve cards of J, Q and K*** in playing cards indicate that there are twelve months in a year, because the sun passes through twelve constellations in a year;

As for playing cards, they are divided into two colors, red and black, which represent day and night respectively.

8. The four colors of playing cards have different meanings: one represents four industries.

(spades-spears symbolize soldiers, plum blossoms-clover flowers symbolize agriculture, squares-bricks symbolize craftsmen, and hearts-hearts symbolize priests), and there is also a story from the pattern of divination tools (spades-olive leaf elephants).

Peace and heart-heart symbolizes wisdom and love, plum blossom-clover symbolizes luck, and diamond symbolizes wealth).

9. the j, q and k in playing cards are jack (waiter) respectively.

The abbreviations of qeen (Queen) and King (King) respectively represent twelve historical figures, such as: K of hearts stands for Charlie (unnecessary), K of squares stands for Caesar (profile), and K of spades stands for saint.

David, etc. In the classics, they were the monarchs of the Hebrew world, the Roman Empire, Rome and Greece in the Middle Ages.

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