The song "I Believe One Day" was originally composed by singer Yang Peian and released on May 26th, 2006.
From the lyrics of "I believe one day": I hope someone will accompany you to wander around the world, become yourself you like first, and hope someone will accompany you through your life. Then meet someone who doesn't need your pleasure. I hope someone will accompany you from one place to another and find your own world first.