It is a game that memorizes 52 cards and memorizes it in 4 steps with 13 chapters 26 chapters 39 chapters 52 chapters.
Before you memorize cards, make your own memorization method using 52 numbers. For example, I think 1 is a pole standing in front of my house door, 2 is a duck playing on the water, 3 is 8, and I cut it in half. After making a memory similar to the above for all 52 numbers, connect the first card to the first card. In other words, if you think that the Heart 3 is the first card you have, you might imagine that three hearts are stuck in a pole. If your second card is Spade 9, you will have a shovel and a second duck in the pit. Practice thirteen cards from the first card so that you can memorize all 52 cards by expanding to the next 29, 39, 52, and so on.
 Each step measures the record of who memorized the fastest time in the world, and when you set a new record, the record is registered as a new record.