sentences:  While Derek Elley of "Variety" argues that the film represents a move towards "maturity," Richard James Havis of "The Hollywood Reporter" takes an opposite tack, arguing that the film's lack of political grounding and mainstream nature leaves it a "cold romantic thriller" that "lacks the emotional muscle" to appeal to international audiences.The theme song "Wo Ai Ni" (我爱你; "I Love You") was composed by Zhang Yadong, written by Xiao Wei (肖玮) of Catcher in the Rye and performed by Faye Wong.It was included in Zhang's 2009 album "Underflow" (潜流).