In the video, a person is seen using a black marker to draw on a piece of cardboard. The person is drawing a large circle and then proceeds to draw a smaller circle inside it. The person then draws a curved line connecting the two circles. The person continues to draw more curved lines, creating a pattern of circles and lines on the cardboard. The person's hand is visible, holding the marker and drawing on the cardboard. The cardboard is placed on a flat surface, and the background is not visible. The video does not contain any text or subtitles.