The Ferris wheel is a large, revolving mechanical building with a cockpit on the edge of the wheel for passengers to take. The passengers sit on the Ferris wheel and slowly turn up, overlooking the surroundings from a height. The most common Ferris wheel exists in amusement parks (or theme parks) and garden games. As a kind of playground maneuver game, it is called "Paradise Three Treasures" with the roller coaster and the carousel. However, the Ferris wheel is often used alone in other occasions and is usually used as an active viewing platform. Legend has it that every box in the Ferris wheel is filled with happiness. When we look up at the Ferris wheel, we are looking up to happiness, how high happiness is, and how high the Ferris wheel is. When we are eager to be happy but happiness is not coming, try to sit on the Ferris wheel and wait for it to rise slowly until the top, overlooking everything you see.