Blood Brothers (Chinese: 天堂口; pinyin: Tiān táng kǒu; literally: "Gate of Heaven") is a 2007 Chinese film directed by Alexi Tan and starring Daniel Wu, Shu Qi, Liu Ye and Tony Yang. It was co-produced by the Taiwanese production company CMC Entertainment, the mainland Chinese Sil-Metropole Organisation, Terence Chang's Lion Rock Productions and Hong Kong film director John Woo, and is Woo's first time as producer of another director's film. The film was shot entirely in the People's Republic of China.