Otello by Frank Porretta (L) and Desdemona by Zhang Liping rehearse Italian opera maestro Giuseppe Verdi's masterpiece "Otello" at the National Center for the Performing Arts (NCPA) in Beijing, capital of China, April 1, 2013. The production will open NCPA's Opera Festival 2013 on April 11. [Xinhua/Luo Xiaoguang]