Wang Defa.
"I Don't Worry About Tomorrow" is a popular song originally sung by Wang Defa. The lyrics of this song express the singer's optimism about the future, not worrying about the unknown tomorrow, but focusing on the current life and enjoyment. Wang Defa performed this song very movingly with his unique voice and soulful singing style. The singing is full of love for life and confidence in the future, making people feel a positive force.