The ability of the brain can be enhanced through practice, just like exercising the body, while also emphasizing gradual circulation and not directly challenging difficult brain games. In the app, you have enough time to choose multiple combinations of numbers and letters, each with a length of 2 digits. When choosing different combinations, you need to remember their content, which is the game content you need to challenge. The number of combinations can be adjusted, such as starting from the simplest two combinations and gradually increasing to a maximum of five combinations, and the time for selecting and observing combinations can also be adjusted. Challenge multiple combinations of numbers and letters, challenge your brain abilities, and wish you the joy of playing games while enhancing your brain abilities.