In a regular 52-card deck, there are 26 red cards. The diamond and heart suits are represented by red cards, while the club and spade suits are represented by black cards.
Playing cards were first invented in China in the 9th century, and they first emerged in Europe in the 14th century. The spade, diamond, heart, and club are the four most prevalent suits. The club represents an acorn, while the spade represents a leaf, and these suits originated in France. The traditional 52-card deck is thought to correspond to the natural world, with the four suits representing the four seasons.