Trying to knock on your door.

Feng Feifei. I want to knock on your door is a lyric of the song "your door", originally sung by Feng Feifei. Lyrics excerpt: want to knock on your door, your door, you hear the electric bell don't let me stand outside the door, wandering back and forth without a clear conscience you some shouldn't, want to knock on your door, your door, you hear the electric bell don't let me stand outside the door, wandering back and forth without a clear conscience you some shouldn't, hey do you hear the sound of the electric bell.