Taiwan has taken the first step to allowing films made in Communist mainland China to be shown freely on screens here. Winner of this year’s Cannes Golden Palm award, “Farewell My Concubine,” was premiered amid great pomp and ceremony Wednesday.The film is directed by Chen Kaige, and features Hong Kong stage/screen star Leslie Chang. The film’s producer, Hsu Feng, cried at the opening, which was attended by officials from Taiwan’s Government Information Office and the ruling political party. The government has banned any films with more than 50% of cast and crew from mainland China. The film depicts the life of a Beijing opera actor, played by Chang, whose failure to distinguish between his concubine character and reality costs him his life.