The organizing committee for the Yeosu Expo unveiled the Big-O Show to the media for the first time.
The Big-O show is a nightly multimedia show, and is also one of the four must-see attractions at the expo.
The show consists of a water fountain show and laser and light shows, with the water fountain shooting up as high as 70 meters.
And in the middle of the giant circle, also known as "The O", is a large water screen, providing various effects for the shows, from video projection to water jets and laser beams.
The Big-O is where the opening ceremony of the Yeosu Expo will be held on Friday evening.