Knock Knock Loving You, also known as Quietly Falling in Love with You, is a Romantic Taiwanese drama starring Dylan Kuo, Maggie Wu, and Ming Dao. The drama is air on CTS/GTV, starting April 12, 2009, airing on Sunday at 22:00Opening theme song: Ni Fei Ba by Chang Yun JingEnding theme song: Hei Qun Zi by Chang Yun Jing