Dreams and reality are inseparable. Colorful dreams often give people a fantastic feeling. In dreams, we can construct our own world. We are free, just like butterflies in the video. The Wonderland shows the direct connection between dream and reality, so that is why I used this as the background. The book on the floor indicates the door between reality and dream.
The flame indicates the reality that always remind people that dream is just dream, we will eventually come back to our real life and face it. The dream is virtual and would finally be burned out by the flame which is the reality, and we have to encounter the real would.