How to play: There are four colors (red, yellow, green, and blue) and four drawing areas. Click on the magnetic dot of a certain pigment, then sense the magnetic dot in the drawing area where you want to draw the same color. The light strip in the drawing area will turn to the corresponding color. This can be repeated. When the colors of the four drawing areas match the settings, relays 1 and 2 will be triggered. After the trigger, the power is turned on again to reset. You can set the trigger color (red, yellow, blue, and green)