A new type of card game designed based on traditional card games, it has a low learning cost, is easy to pick up, and has good entertainment value. At the same time, this card game has a fast pace, which can prevent gambling behavior. It is not limited to the number of people and can also promote communication and familiarity among the elderly. Here's how it works: Taking a deck of poker cards as an example, players first draw two cards, add the numbers, if the sum is greater than 21, it is judged as a loss and wait for the next round. If it is exactly 21, it wins directly and everyone enters the next round. If it is less than 21, the following options can be made: Rendered image,Source: Haotong Zhao's Blender 1. Feeling the number is too small, continue to draw cards, 2. Feeling the number is too large but not 21, stop drawing cards, and place the cards face down on the table, waiting for others to also place their cards face down on the table. 3. After drawing cards, the sum reaches 21, show directly and win this round, and the game enters the next round. 4. Wait until everyone feels the number is appropriate and no one draws exactly 21, show the cards on the table to other players and announce the number. 5. Compare the size, the person with the largest number wins this round. If two people have the same largest number, compare the smallest or largest number in the hand cards to see who is larger, and the one with the largest number wins. Please note, to prevent problems such as cheating during the game for the elderly, caregivers or products can distribute the cards to each player, playing the role of the "dealer" in traditional card games. For easy understanding, I have drawn a flowchart. Flowchart, from Haotong Zhao's computer We tested this game in the dormitory, and it's really fun and addictive. The only downside is that I can't think of a way to industrialize it. It seems unnecessary for us to design a new set of playing cards.